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2014 CHEVROLET EXPRESS/GMC SAVANA FULL
SIZE VAN ELECTRICAL
Revision 1.0 www.gmupfitter.com April 21, 2014
http://www.gmupfitter.com/
Note to User:
As part of our mission to provide an up-to-date website that includes detailed Body Builder Manuals, Technical Bulletins, and Best Practice Manuals, we are now using sectional excerpts directly from the General Motors Service Information publications for our Electrical Body Builder Manuals.
You will note that the section numbers are non-sequential as we have provided only those that are believed to be the most pertinent to the Upfitter community and best suited to their needs.*
This new usage of the Service Information provides the opportunity for us to remain consistent with the changes that take place throughout the model year and to provide you updated information in a more timely fashion.
* If you would like to have access to all of the electrical Service Information, please apply for a subscription from ACDelco at
http://acdelcotechconnect.com/html/tss_tech_esi.jsp
Table of Contents
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Body Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1Fixed and Moveable Windows . . . . . . . . . . . . . . . . . 4-3Horns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29Vehicle Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33Wipers and Washers . . . . . . . . . . . . . . . . . . . . . . . . . 4-38
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1Antilock Brake System. . . . . . . . . . . . . . . . . . . . . . . . . 5-3Hydraulic Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
Driver Information and Entertainment . . . . . . . 8-1Cellular, Entertainment, and Navigation . . . . . . . 8-3Displays and Gauges . . . . . . . . . . . . . . . . . . . . . . . . . 8-20Secondary and Configurable CustomerControls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-33
Engine/Propulsion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-112 V Starting and Charging . . . . . . . . . . . . . . . . . . . . 9-3Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-15Engine Controls and Fuel - 4.3L (LU3) . . . . . . . 9-22Engine Controls and Fuel - 4.8L (L20), 5.3L(LMF), or 6.0L (L96 LC8) . . . . . . . . . . . . . . . . . . . . 9-44Engine Controls and Fuel - 6.6L (LGH) . . . . . . 9-85Engine Heating and Cooling . . . . . . . . . . . . . . . . 9-125
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1HVAC - Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3
Power and Signal Distribution . . . . . . . . . . . . . . . 11-1Data Communications . . . . . . . . . . . . . . . . . . . . . . . . 11-3Power Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-17Wiring Systems and PowerManagement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-20
Safety and Security. . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1Immobilizer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3Object Detection and PedestrianProtection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-7Remote Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-14
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1Power Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-3
Suspension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1Tire Pressure Monitoring . . . . . . . . . . . . . . . . . . . . . 15-3
Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-1Automatic Transmission - 4L60-E (M30) . . . . . 16-3Automatic Transmission - 6L90 (MYD) . . . . . . . 16-8Shift Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-13
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INDEX-1
2014 - Express, Savana Electrical Body Builders Manual
Table of Contents 1-1
Section 1
General Information
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3RPO Code List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2014 - Express, Savana Electrical Body Builders Manual
General Information 1-3
General Information
Introduction
RPO Code ListThe production/process codes provide the descriptionof the regular production options (RPOs). The RPO listis printed on the Service Parts Identification Label.
RPO Code ListRPO Description
01U PRIMARY COLOR EXTERIOR,SPECIAL (96)
15U PRIMARY COLOR EXTERIOR,CASHMERE METALLIC (04)
16U PRIMARY COLOR EXTERIOR,GRAYSTONE METALLIC (213M)
25U PRIMARY COLOR EXTERIOR, DARKMING BLUE (02)
40P WHEEL COLOR WHITE (91)
41U PRIMARY COLOR EXTERIOR,BLACK (97)
47U PRIMARY COLOR EXTERIOR, MEDIUMGREEN PEARL METALLIC (02)
50U PRIMARY COLOR EXTERIOR,OLYMPIC WHITE (93)
52G TRIM COMBINATION CLOTH, MEDIUMNEUTRAL II (G) (00)
52I INTERIOR TRIM LIGHT NEUTRAL(I) (96)
52W TRIM COMBINATION VINYL, MEDIUMNEUTRAL II (W) (00)
74U PRIMARY COLOR EXTERIOR,VICTORY RED (96)
86U PRIMARY COLOR-EXTERIOR,WHEATLAND YELLOW (02) 253A
93GTRIM COMBINATION CLOTH, MEDIUMDARK PEWTER II (G) (03) (GMT610 G VAN)
93I INTERIOR TRIM MEDIUM DARKPEWTER II (03) (GMT610 G VAN)
93WTRIM COMBINATION VINYL, MEDIUMDARK PEWTER II (W) (03) (GMT610 G VAN)
9N2 GVW RATING-10,050 LBS
A07 WINDOW BODY
A08 WINDOW BODY, RIGHT
A12 WINDOW REAR DOOR, STA
A13 WINDOW SIDE DOOR REAR, STA
A17 WINDOW SIDE BODY SWINGOUT, LEFT
A18 WINDOW REAR DOOR, SWING OUT
A19 WINDOW SIDE DOOR REAR,SWING OUT
RPO Code List (cont'd)RPO Description
A31 WINDOW - POWER OPERATED, ALLDOORS
AG1 ADJUSTER FRONT SEAT POWER,MULTI-DIRECTIONAL, DRIVER
AG2 ADJUSTER PASSENGER SEAT POWER, MULTI-DIRECTIONAL
AJ1 WINDOW TINTED DEEP, ALLEXCEPT WINDSHIELD AND DOORS
AJ3 RESTRAINT SYSTEM SEAT,INFLATABLE, DRIVER
AK5RESTRAINT SYSTEM SEAT,INFLATABLE, DRIVER ANDPASSENGER
AL0SENSOR INDICATOR INFLATABLERESTRAINT, FRONT PASSENGER/CHILD PRESENCE DETECTOR
ANC SALES PACKAGE SHUTTLE BUS
AR7 SEAT FRONT BUCKET, STANDARD
ASF RESTRAINT ROOF SIDE, LEFTANDRIGHT, INFLATABLE
AS5 SEAT FRONT BUCKET, DELUXE
AT8 RESTRAINT PROVISION CHILD, REARSEAT, REAR FACING
ATG LOCK CONTROL, ENTRY - REMOTEENTRY, STANDARD RANGE
AU3 LOCK CONTROL SIDE DOOR,ELECTRIC
AXK VEHICLE TYPE - TRUCK
AXP VIN IDENTIFICATION POSITION,MULTI-PURPOSE VEHICLE
AXW VEHICLE TYPE - BUS (NOTSCHOOL BUS)
B30 COVERING FLOOR CARPET
B31 COVERING FLOOR VINYL, FRONT,FULLWIDTH
B32 COVERING FRONT FLOOR MATS,AUXILIARY
B33 COVERING REAR FLOOR MATS,AUXILIARY
B38 COVERING FLOOR VINYL, FRONTAND REAR, FULLWIDTH
B3D EQUIPMENT SCHOOL BUS
B46 TRIM EQUIPMENT SPECIAL ORDER
BA0 ORNAMENTATION EXTERIOR,DOOR, NAMEPLATE
BA3 COMPARTMENT STOWAGE, I/PLOWER EXTENSION DELUXE
BAG PARTS PACKAGE EXPORT
BG5 COVERING FLOOR DELETE
BNC PARTS PACKAGE BODY MOUNTCUSHIONS
BTV REMOTE START - ENGINE
2014 - Express, Savana Electrical Body Builders Manual
1-4 General Information
RPO Code List (cont'd)RPO Description
BUE KIT EXHAUST DIESEL
C36 HEATER AUXILIARY
C4K GVW RATING-9,925 LBS
C4M GVW RATING 4 500 KG (9,900 LB)
C42 HVAC SYSTEM HEATER, OUTSIDEAIR, DELUXE
C49 DEFOGGER REAR WINDOW,ELECTRIC
C6A GVW RATING 7,300 LBS
C6P GVW RATING 8,600 LBS/3 900 KG
C6Y GVW RATING 9,600 LBS
C60 HVAC SYSTEM AIR CONDITIONERFRONT, MANUAL CONTROLS
C69 HVAC SYSTEM REAR AIRCONDITIONER
C7A GVW RATING 10,000 LBS
C7I GVW RATING 14,200 LBS
C7N GVW RATING 12,300 LBS
C7Q GVW RATING 4 000 KG (8,800 LB)
C8V GVW RATING 13,980 LBS
C99SWITCH INFLATABLE RESTRAINT,INSTRUMENT PANEL MODULEMANUAL SUPPRESSION
CEI
CERTIFICATION CERTIFICATION,EMISSION, GEOGRAPHICALLYRESTRICTED REGION FOR VEHICLESOVER 14,000 LBS GVW
CEJCERTIFICATION EMISSION, FEDERALFOR VEHICLES OVER 14,000LBS GVW
CU7 COUNTRY KUWAIT
CU8 COUNTRY SAUDI ARABIA
CV3 COUNTRY MEXICO
CV4 COUNTRY ISREAL
CW2 COUNTRY GULF AREAS
CW3 COUNTRY ASIA/PACIFIC
CW5 COUNTRY VENEZUELA
CW6 COUNTRY GUAM
CW9 COUNTRY MISC
D28 MIRROR OUTSIDE DELETE
D31 MIRROR INSIDE REARVIEW TILT(DUPLICATE WITH D36)
DAA SUNSHADE VINYL
DE2 MIRROR OUTSIDE LEFTAND RIGHT,MANUAL CONTROL, FOLDING, COLOR
DE5MIRROR OUTSIDE LEFTAND RIGHT,REMOTE CONTROL, ELECTRIC,HEATED, FOLDING, COLOR
RPO Code List (cont'd)RPO Description
DE7
MIRROR OUTSIDE LEFTAND RIGHT,REMOTE CONTROL, ELECTRIC,HEATED, LIGHT SENSITIVE, MANUALFOLDING, TURN SIGNAL INDICATOR,COLOR
DHCMIRROR OUTSIDE LEFTAND RIGHT,MANUAL CONTROL, AUX WFOV,COLOR
DH6MIRROR INSIDE FRONT VANITY LEFTAND RIGHT, SUNSHADE,ILLUMINATED
DNS EQUIPMENT - SUPPLIER INSTALLED
DT4 ASHTRAY CIGARETTE LIGHTER
E24 DOOR SIDE REAR, HINGED
E26 DOOR SIDE REAR LEFT HINGED
E3T HANDLE INSIDE, DOOR RELEASE
E48 COVER - RADIATOR GRILLE OPG -COLD CLIMATE
EF7 COUNTRY-UNITED STATES OFAMERICA (USA)
ENC HVAC PROVISIONS AUXILIARYHEATER PLUMBING AND WIRING
EVA TEST DVT, EVAP EMISSIONREQUIREMENT
EXP EXPORT
FAS ACCESSORY-NAVIGATION SYSTEM -PORTABLE - LEVEL 2
FAW ACCESSORY-NAVIGATION SYSTEM -PORTABLE - LEVEL 3
FE9 CERTIFICATION EMISSION FEDERAL
FHO VEHICLE FUEL - GASOLINE E10
FHS VEHICLE FUEL - GASOLINE E85
FHX VEHICLE FUEL - DIESEL B20
FHZ VEHICLE FUEL - DEDICATED CNG
G7K EQUIPMENT - ANTENNA, CABLE ANDGROUNDPLATE
G80 AXLE POSITRACTION LIMITED SLIP
GGZ PRIMARY COLOR EXTERIOR, SHEERSILVER METALLIC
GH0 AXLE REAR 3.54 RATIO
GT4 AXLE REAR 3.73 RATIO
GT5 AXLE REAR 4.10 RATIO
GU6 AXLE REAR 3.42 RATIO
JFF GVW RATING-10,100 LBS
JH5 BRAKE HYDRAULIC POWER, 4 WHEELDISC, 7,200 LBS
JH6 BRAKE HYDRAULIC POWER, 4 WHEELDISC, 9,900 LBS
JH9 BRAKE HYDRAULIC POWER, 4 WHEELDISC, 14,050 LBS
JL4 CONTROL ACTIVE BRAKE
K05 HEATER ENGINE BLOCK
2014 - Express, Savana Electrical Body Builders Manual
General Information 1-5
RPO Code List (cont'd)RPO Description
K08 HEATER AUXILIARY, FUEL FIRED
K34 CRUISE CONTROL AUTOMATIC,ELECTRONIC
K50 FUEL FITTING, LINE TAKE-OFF
K68 GENERATOR 105 AMP
KC4 COOLING SYSTEM ENGINE OIL
KD1 COOLING SYSTEM TRANSMISSION, OIL
KD9 GENERATOR 145 AMP, DUAL
KG3 GENERATOR 145 AMP
KG7 GENERATOR 125 AMP
KO7VEHICLE FUEL - LIQUEFIEDPETROLEUM GAS, LIQUID - (PROPANEAND PROPANE / BUTANE BLENDS)
KUP THROTTLE CONTROL ELECTRONIC
L20ENGINE FLEXIBLE FUEL, GAS/ETHANOL, 8 CYLINDER, 4.8L, SFIIRON, GM
L96ENGINE FLEXIBLE FUEL, GAS/ETHANOL, 8 CYLINDER, 6.0L, SFIIRON, GM
LC8 ENGINE - LPG / CNG, 8 CYL, V8, 6.0L,SFI, GEN 1, GMNA
LGH ENGINE DIESEL, 8 CYLINDER, 6.6L, DI,V8, TURBO, DURAMAX
LMFENGINE FLEXIBLE FUEL, (GAS/ALC) 8CYLINDER, 5.3L, SFI, V8, OHV,IRON, GM
LU3 ENGINE GAS, 6 CYLINDER, 4.3L, MFI,V6, 90 DEGREE
M30 TRANSMISSION AUTOMATIC 4 SPEED,HMD, 4L60-E, ELECTRONIC
MTF PROVISIONS FIRE EXTINGUISHERMOUNTING
MYD TRANSMISSION AUTOMATIC 6SPEED, HMD, 6L90
N12 EXHAUST SYSTEM REAR EXIT
N33 STEERING COLUMN TILT TYPE
N88 WHEEL 17 X 7.5, ALUMINUM,PREMIUM
NB8 EMISSION OVERRIDE CALIFORNIASYSTEM
NCF LOCK CHILD SECURITY FEATURE DELETE
NC7 EMISSION OVERRIDE FEDERALSYSTEM
NC8 EMISSION SYSTEMCALIFORNIA, ULEV
NE1
CERTIFICATION EMISSION,GEOGRAPHICALLY RESTRICTEDREGISTRATION FOR VEHICLES UP TO14,000 LBS GVW
NE7 FUEL TANK 227 L, 57 GAL
NPL PLATE NAME DELETE
RPO Code List (cont'd)RPO Description
NP5 STEERING WHEEL LEATHERWRAPPED
NT7 EMISSION SYSTEM FEDERAL,TIER 2
NUA EMISSION SYSTEM - CALIFORNIA,150K, LEV 2
NU4 EMISSION SYSTEM CALIFORNIALEVEL 2 PLUS
NU5 EMISSION SYSTEM CALIFORNIA,BIN 4
NX7 WHEEL 17 X 7.5, STEEL
NZ4 WHEEL SPARE - FULL SIZE, 17 STEEL
P03 COVER, WHEEL VAR 3
P46 WHEEL 17 X 7.5, ALUMINUM, UPLEVEL
PNCPANEL TRIM, FRONT DOORS ANDSIDE REAR DOOR(S) AND REARDOORS
PPC PANEL TRIM, REAR DOORS
PRP SALES PACKAGE COMMERCIALTRADESMAN
QB5 WHEEL 16 X 6.5, STEEL
QT4 WHEEL 16 X 6.5, STEEL H.D.
R04 WHEEL CONFIGURATION REAR,SINGLE
R05 WHEEL CONFIGURATION REAR, DUAL
R25APPEARANCE PACKAGE EXTERIOR,CHROME GRILLE AND PAINTEDBUMPER
R26APPEARANCE PACKAGE EXTERIOR,CHROME GRILLE AND FRONTBUMPER
T62 LAMP SYSTEM DAYTIME RUNNING DELETE
T74 HEADLAMPS CONTROL AUTOMATIC,DELAY
TGA LANGUAGE CONTROL ENGLISH,FRENCH, SPANISH
TGG LANGUAGE CONTROL ENGLISH,ARABIC, FRENCH
TR9 LAMP GROUP
U05 HORN DUAL
U1C RADIO AM/FM STEREO, SEEK/SCAN,CD, CLOCK, ETR
U19SPEEDOMETER INSTRUMENT,KILOMETERS AND MILES, KILOMETERODOMETER
U2J DIGITAL AUDIO SYSTEM S-BAND, NOTINSTALLED
U2K DIGITAL AUDIO SYSTEM - S-BAND
U73 ANTENNA FIXED, RADIO
U74 ANTENNA RADIO DELETE
U80 DISPLAY COMPASS
2014 - Express, Savana Electrical Body Builders Manual
1-6 General Information
RPO Code List (cont'd)RPO Description
UA1 BATTERY HIGH CAPACITY, WET
UA7 THEFT DETERRENT SYSTEM -EXPORT SPECIFIC, VAR 2
UC2SPEEDOMETER INSTRUMENT,KILOMETER AND MILES, KILOMETERODOMETER, POSITIVE BIAS
UD4 ALARM VEHICLE SPEED, 120 KM/H
UD7 PARK ASSIST-REAR
UE0 COMMUNICATION SYSTEM - VEHICLE,G.P.S. - NONE
UE1 COMMUNICATION SYSTEM - VEHICLE,G.P.S. 1
UFA DISPLAY OUTSIDE TEMPERATURE
UFM PARTS PKG COMPLETE VEHICLEKIT, 3 TANK
UFP PARTS PKG COMPLETE VEHICLEKIT, 4TANK
UF2 LAMP CARGO
UF3 SWITCH HIGH IDLE
UJM TIRE PRESSURE INDICATOR MANUALLEARN
UJ1 INDICATOR SYSTEM, BRAKEWARNING
UL2 FREQUENCIES-EUROPEAN
UL5 RADIO DELETE
UL8 FREQUENCIES SAUDI ARABIAN
UM7 RADIO AM/FM STEREO, SEEK/SCAN,CLOCK, ETR
UPF WIRELESS INTERFACE - SHORTRANGE, VOICE REC
US8RADIO AM/FM STEREO, SEEK/SCAN,CD, AUTO TONE, CLOCK, ETR,MP3, RDS
USR RECEPTACLE - USB
UVC CAMERA-REAR VIEW
UXZ RADIO PROVISIONS FOR
UY7 WIRING HARNESS TRUCKTRAILER, HD
UYSRADIO-AM/FM STEREO, NAV, DVD-ROM, CAF, HDD, USB, RSA, RSE(GMNAVERSION)
V10 PROVISION OPTIONS COLDWEATHER
V14 COOLER OIL, TRANSMISSION,AUXILIARY
V22 GRILLE RADIATOR, CHROME
V37 BUMPER FRONTAND REAR,CHROME
V46 BUMPER FRONT CHROME
V4D CALIBRATION - SEPARATED STOP/TURN SIGNAL CIRCUITS
V8D VEHICLE STATEMENT - US
V8I VEHICLE STATEMENT-ISRAEL
RPO Code List (cont'd)RPO Description
VBX LANGUAGE LABEL ARABIC
VC5 LABEL SHIPPING, EXCEPT US, USPOSSESSIONS, OR JAPAN
VC7 LABEL PRICE/FUELECONOMY, GUAM
VG8 VEHICLE LABEL, NOTICE TO BUYER
VH6 BUMPER FRONT BLACK
VJG BUMPER REAR BLACK
VK3 LICENSE PLATE FRONT FRONTMOUNTING PACKAGE
VK5 SEAT TEMPORARY, FOR SHIPPING
VPH VEHICLE PREPARATION OVERSEASDELIVERY
VP6 NOISE CONTROL
VR4 TRAILER HITCH WEIGHTDISTRIBUTING PLATFORM
VR6 HOOK TIE-DOWN SHIPPING
VT7 OWNERS MANUAL ENGLISHLANGUAGE
WEN PLANT CODE WENTZVILLE, MO, USA
W1Y CONTROL STEERING WHEEL,RADIO, REDUNDANT CONTROLS
XEC TIRE FRONT LT215/85R16/E BW R/STST TL HWY
XHF TIRE FRONT LT225/75R16/E BL R/PESTALS
XHH TIRE FRONT LT245/75R16/E BW R/PEST TL ALS 120Q
XL7 FREQUENCIES RATING - 315 MHZ,LONG DISTANCE
XLP TIRE FRONT LT245/75R16/E BW R/PEST TL ALS 120/116S
XPR TIRE FRONT P245/70R17-108S BW TLSTALS
X88 MARKET BRAND CHEVROLET
Y3HMERCHANDISED PACKAGE HANDICAPPED, MOBILITY,PARATRANSIT
YA2 DOOR SIDE REAR, SLIDING
YB9 PAINT PROCESS INTERIOR DELETE
YC6 PACKAGE, CONVENIENCE DECORLEVEL 6
YEC TIRE REAR LT215/85R16/E BW R/ST STTL HWY
YF1 SALES PACKAGE CUTAWAYUPFITTER
YF2 SALES PACKAGE AMBULANCEUPLIFTER
YF5 CERTIFICATION EMISSION,CALIFORNIA
YF7 SALES PACKAGE RECREATIONALVEHICLE, UPFITTER
2014 - Express, Savana Electrical Body Builders Manual
General Information 1-7
RPO Code List (cont'd)RPO Description
YHF TIRE REAR LT225/75R16/E BL R/PESTALS
YHH TIRE REAR LT245/75R16/E BW R/PEST TL ALS 120Q
YLP TIRE REAR LT245/75R16/E BW R/PEST TL ALS 120/116S
YPR TIRE REAR P245/70R17-108S BW TLSTALS
Z49 COUNTRY - CANADA
Z82 TRAILER PROVISIONS SPECIALEQUIPMENT, H.D.
Z88 MARKET BRAND GMC
ZEC TIRE SPARE LT215/85R16/E BW R/STST TL HWY
ZHF TIRE SPARE LT225/75R16/E BL R/PESTALS
ZHH TIRE SPARE LT245/75R16/E BW R/PEST TL ALS 120Q
ZLP TIRE SPARE LT245/75R16/E BW R/PEST TL ALS 120/116S
ZPR TIRE SPARE P245/70R17-108S BW TLSTALS
ZP0 SEATING ARRANGEMENT TEMPORARY DRIVER
ZP3 SEATING ARRANGEMENT 15PASSENGER
RPO Code List (cont'd)RPO Description
ZP8 SEATING ARRANGEMENT 8PASSENGER
ZQ2 SALES PACKAGE DRIVERCONVENIENCE
ZQ3 SALES PACKAGE DRIVERCONVENIENCE II
ZR7 APPEARANCE PACKAGE GRILLEAND BUMPER CHROME
ZW2 WINDOW PACKAGE REAR DOORS
ZW3 WINDOW PACKAGE REAR DOORS,SIDE REAR DOOR
ZW4 WINDOW PACKAGE RIGHT SIDE,REAR DOORS
ZW6 WINDOW PACKAGE COMPLETE BODY
ZW9 BODY EQUIPMENT BASE BODY ORCHASSIS
ZX1 SEATING ARRANGEMENT DRIVERONLY, HIGH BACK
ZX2 SEATING ARRANGEMENT DRIVERAND PASSENGER, HIGH BACK
ZX5 SEATING ARRANGEMENT 12PASSENGER
ZX9 TIRE SPARE WITH WHEEL DELETE
ZY1 COLOR COMBINATION SOLID
2014 - Express, Savana Electrical Body Builders Manual
Table of Contents 4-1
Section 4
Body Systems
Fixed and Moveable Windows . . . . . . . . . . . . . . . . 4-3Schematic and Routing Diagrams . . . . . . . . . . . . . . . 4-3Moveable Window Schematics . . . . . . . . . . . . . . . . . . 4-4Defogger Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5Description and Operation . . . . . . . . . . . . . . . . . . . . . . . 4-6Power Windows Description and Operation . . . . . . 4-6Rear Window Defogger Description andOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Horns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7Schematic and Routing Diagrams . . . . . . . . . . . . . . . 4-7Horn Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8Description and Operation . . . . . . . . . . . . . . . . . . . . . . . 4-9Horns System Description and Operation . . . . . . . . 4-9
Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10Schematic and Routing Diagrams . . . . . . . . . . . . . . 4-10Headlights/Daytime Running Lights (DRL)Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Exterior Lights Schematics . . . . . . . . . . . . . . . . . . . . . 4-14Interior Lights Schematics . . . . . . . . . . . . . . . . . . . . . . 4-19Interior Lights Dimming Schematics . . . . . . . . . . . . 4-22
Description and Operation . . . . . . . . . . . . . . . . . . . . . . 4-25Exterior Lighting Systems Description andOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
Interior Lighting Systems Description andOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29Schematic and Routing Diagrams . . . . . . . . . . . . . . 4-29Outside Rearview Mirror Schematics . . . . . . . . . . . 4-30Description and Operation . . . . . . . . . . . . . . . . . . . . . . 4-32Outside Mirror Description and Operation . . . . . . 4-32
Vehicle Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33Schematic and Routing Diagrams . . . . . . . . . . . . . . 4-33Release Systems Schematics . . . . . . . . . . . . . . . . . . 4-34Description and Operation . . . . . . . . . . . . . . . . . . . . . . 4-36Door Ajar Indicator Description andOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
Power Door Locks Description andOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
Wipers and Washers . . . . . . . . . . . . . . . . . . . . . . . . . 4-38Schematic and Routing Diagrams . . . . . . . . . . . . . . 4-38Wiper/Washer Schematics . . . . . . . . . . . . . . . . . . . . . . 4-39Description and Operation . . . . . . . . . . . . . . . . . . . . . . 4-41Wiper/Washer System Description andOperation (Wiper and Washers) . . . . . . . . . . . . . . . 4-41
2014 - Express, Savana Electrical Body Builders Manual
Fixed and Moveable Windows 4-3
Fixed and Moveable Windows
Schematic and Routing Diagrams
2014 - Express, Savana Electrical Body Builders Manual
4-4
FixedandMoveable
WindowsMoveable Window Schematics (Moveable Windows)
3395048
RAP Relay K6
M
M
LOC
DESC
1001D-GN
C
G2X2
1001D-GN
1001D-GN
A
G1
1001D-GN
166L-BU
H
A
167TN
D
D
166L-BU
167TN
166L-BU
167TN
164D-BU
B
G
165BN
A
H
450BK
F
666D-BU
B
G
667BN
A
F
PWR WINDOW(S)25A (A31)
G347
D6X500
D5X500 D4
A4X600 B4 B5
M74PWindowMotor -Passenger
S79PWindowSwitch -Passenger
S79DWindowSwitch -Driver
M74DWindowMotor -Driver
Interior Lights DimmingSchematics
X52AFuse Block -PassengerCompartment
2014-Exp
ress,
Sava
naElectrica
lBodyBuilders
Manual
FixedandMoveable
Windows
4-5
Defogger Schematics (Defogger)
3395049
LOC
DESC
REARDEFOG
B+
86 30
85 87
Relay K5
193WH
C4X1
DX3
350BK
E2X1
293PU
AX1
D2X2
293PU
850BK
AX2
850BK
293PU
AX1
D1
293PU
1050BK
1050BK
AX2
B
A18A12
A
293PU
B
293PU
A18
A
A12
RUN Relay K1
341BN
BX3
C5X1
C49/DE5/DE7
IGN
193WH
G302 G402 G401
REAR DEFOGF1810A
AX902
BX412
AX901
DX411
HVAC210A
E18LRearDefoggerGrid - Left
E18LRearDefoggerGrid - Left E18R
RearDefoggerGrid -Right
E18RRearDefoggerGrid -Right
A90Logic
X52AFuse Block -PassengerCompartment
S34HVACControlsSwitchAssembly
X52AFuse Block -PassengerCompartment
2014-Exp
ress,
Sava
naElectrica
lBodyBuilders
Manual
4-6 Fixed and Moveable Windows
Description and Operation
Power Windows Description andOperation
Power Window System ComponentsThe power window system consists of the followingcomponents:
LF power window master switch RF power window switch Reversible power window motors in each of the
doors (circuit breaker protected) PWRWNDW 25A circuit breaker
Power Window System ControlsThe power window system will operate anytime theignition switch is in the ACCYor ON position or whenRAP is activated.The LF power window master switch can control the upand down functions of both the windows in the vehicle.The passenger door power window switch can onlycontrol the up and down functions of the passengerwindow.
Power Window Motor OperationA permanent magnet motor operates each of the powerside windows. Each motor raises or lowers the glasswhen the motor receives voltage. The direction themotor turns depends on the polarity of the supplyvoltage. The power window switches control thepolarity of the supply voltage. A built-in circuit breakerprotects each motor. The circuit breaker opens whenthe switch is depressed for a extended period of timeunder the following conditions:
The window has an obstruction. The window is fully open or fully closed.
The circuit breaker will reset automatically as the circuitbreaker cools.
Power Window OperationThe normally closed contacts of the switch areconnected to ground and the center pole is connectedto the accessory voltage circuit. By placing the leftpower window switch in the down position, voltage isapplied to the power window motor left front down
circuit and to the power window motor. The other sideof the power window motor is connected to groundthrough the normally closed contacts of the left powerwindow switch through the power window motor leftfront up circuit and drives the window down.By placing the power window switch in the up positionthe polarity of the motor is reversed and the motordrives the window up.
Rear Window Defogger Descriptionand Operation
Rear Window Defogger SystemComponentsThe rear window defogger system consists of thefollowing components:
HVAC control assembly Rear window defogger relay Rear window defogger grid
Rear Window Defogger OperationWhen you turn the ignition to the ON position, batterypositive voltage is supplied through theHTDMIR DEFOG fuse to the rear window defoggerrelay switched input. Ground is for the rear windowdefogger relay coil is provided by G302. Batterypositive voltage and ignition voltage is supplied to theHVAC control assembly for rear window defoggeroperation. When the rear window defogger switch isdepressed, the HVAC control assembly energizes therear window defogger relay by supplying batterypositive voltage to the rear window defogger relay coil.This allows battery positive voltage from the relayswitched input through the switch contacts and out therelay switched output to the rear window defoggergrids. The HVAC control assembly also illuminates therear window defogger indicator upon this request.Ground for the left rear window defogger grid isprovided by G401. Ground for the right rear windowdefogger grid is provided by G402.When you turn ON the ignition and press the rearwindow defogger switch for the first time, the defoggercycle lasts 10 minutes. Further operation results in5 minute defogger cycles. The defogger cycle resets to10 minutes when you cycle the ignition to the OFFposition and then back to the ON position.
2014 - Express, Savana Electrical Body Builders Manual
Horns 4-7
Horns
Schematic and Routing Diagrams
2014 - Express, Savana Electrical Body Builders Manual
4-8
Horns
Horn Schematics (Horn Schematics)
3395055
B+LOC
DESCHORN/WASH
PCBRELAY K5
85 30
86 87
29D-GN
B
B4X1
28TN
BX1
H3X3
28TN
18X5
28TN
28OG
AX1
JX2
1250BK
A
350BK
AX2
G302 G102
HORN20A
A1X200
P13HornAssembly
X85SteeringWheel AirBag Coil
X50AFuse Block -Underhood
K9BodyControlModule
S33HornSwitch
2014-Express,
SavanaElectrica
lBodyBuilders
Manual
Horns 4-9
Description and Operation
Horns System Description andOperation
System DescriptionThe horn system consists of the following components: The HORN fuse The Horn relay The Horn Contact The Horn Assembly Body Control Module (BCM)
System Operation The vehicle horns are activated whenever the
horn switch is depressed. The BCM commands the horns ON under any of
the following conditions: When the panic button is depressed on theremote control door lock transmitter. For furtherinformation refer to Keyless Entry SystemDescription and Operation on page 1216.
When the keyless entry system is used to lockthe vehicle, a horn chirp may sound to notify thedriver that the vehicle has been locked. Thenotification feature may be enabled or disabledthrough personalization. For further informationrefer to Keyless Entry System Description andOperation on page 1216.
Circuit OperationBattery positive voltage is applied at all times to thehorn relay coil and the horn relay switch. Pressing thehorn switch applies ground to the horn relay controlcircuit. When the horn relay control circuit is grounded,the horn relay is energized and battery positive voltageis applied to the horns through the horn control circuit.The horns sound as long as ground is applied to thehorn relay control circuit.
2014 - Express, Savana Electrical Body Builders Manual
4-10 Lighting
Lighting
Schematic and Routing Diagrams
2014 - Express, Savana Electrical Body Builders Manual
Lightin
g4-11
Headlights/Daytime Running Lights (DRL) Schematics (Headlamp and Daytime Running Lamp Controls)
3395067
FTP AUTO AUTO
LOC
DESC
525YE
CX2
18X1
307YE
E
25
278WH
A
11X2
306D-GN
3
17
13L-BU
2
8
103WH
1
12
525YE
307YE
351BK/WH
B
351BK/WH
DX2
8
351BK/WH
Headlamp and Panel Dimmer Switch
G302
D3X200 C3
S78Turn Signal/MultifunctionSwitch
K9BodyControlModule
B10AmbientLightSensor
2014-Exp
ress,
Sava
naElectrica
lBodyBuilders
Manual
4-12
Lightin
gHeadlights/Daytime Running Lights (DRL) Schematics (Low Beam and Daytime Running Lights (DRL))
3395072
B+
LOC
DESC
LO BEAMPCBRELAY K6
DRLPCBRELAY K19
544PU
23X4
H5X3
712YE
KX4 L
V22 -V22
1970PK/WH
23X5
H4X3
712YE
A
FX4
312TN/WH
A
P
C C
-V22 V22 V22 -V22
250BK
B
250BK
A
650BK
B
650BK
A
G100 G101
DRL 1 (LOLVL +V22)15A
DRL 2 (LOLVL -V22)10A
LT LOBEAM10A
RT LOBEAM10A
E13RHeadlamp -Right
K9BodyControlModule
X50AFuse Block -Underhood
E13LHeadlamp -Left
E4GHeadlamp -Left LowBeam
E4HHeadlamp -Right LowBeam
2014-Exp
ress,
Sava
naElectrica
lBodyBuilders
Manual
Lightin
g4-13
Headlights/Daytime Running Lights (DRL) Schematics (High Beams)
3395075
B+
1969TN/WH
16X4
K8X3
711D-GN/WH
A
NX4
B
311L-GN/BK
A
M
B
250BK
A
250BK
B
650BK
B
650BK
A
-V22 V22 V22 -V22
LOC
DESC
G100 G101
LT HIBEAM10A
RT HIBEAM10A
X50AFuse Block -Underhood
E13RHeadlamp -Right
E13LHeadlamp -Left
K9BodyControlModule
E4EHeadlamp -Left HighBeam
E4FHeadlamp -Right HighBeam
KR48HeadlampHigh BeamRelay
2014-Exp
ress,
Sava
naElectrica
lBodyBuilders
Manual
4-14
Lightin
gExterior Lights Schematics (Park Lamp Controls and Park Lamps)
3395079
AUTO
B+ LOC
DESC
85 30
86 87
45D-BU
24X5
A5X1 B2
2105BN
B
A4X2
2509BN
A
1050BK
G
1050BK
B
850BK
G
351BK/WH
8
13L-BU
2
8X2
2109BN
UY7
2609BN
B
A5
CARGO/PASSENGERCARGO/PASSENGER
2509BN
2509BN
2609BN
2309BN
J3X3
B4X1
2209BN
B4X2
2109BN
C5
B5X1
CUTAWAYYF2/YF7
2109BN
F3X2
2309BN
B
C
2309BN
A
2309BN
B
BX4
2309BN
2309BN
2309BN
A
650BK
B
250BK
B
650BK
C
250BK
C
Headlamp and Panel Dimmer Switch
Marker Lamp - Left Front Marker Lamp - Right Front
G302 G402 G101G100G401
TRLR PRKLAMP(S)15A
LT REARPARK LAMP10A
RT REARPRK LAMP10A
FRT PRKLAMP(S)10A
UPFTRPRK LAMP(S)10A
AUX PRKLAMP(S)15A
AX402
AX412
AX401
SX320
XX320
FX405
J122J121
K9BodyControlModule
E5STail/Stopand TurnSignalLamp - Left
E5TTail/Stopand TurnSignalLamp -Right
X50AFuse Block -Underhood
TrailerConnector/ProvisionSchematics
E4NPark/TurnSignalLamp -Left
E4PPark/TurnSignalLamp -Right
E7License PlateLamp
KR53ParkLampsRelay
X52AFuse Block -PassengerCompartment
2014-Exp
ress,
Sava
naElectrica
lBodyBuilders
Manual
Lightin
g4-15
Exterior Lights Schematics (Turn Signal Controls and Front Turn Signal Lamps)
3395083
B+
B+ B+ B+
LOC
DESC
3040RD/WH
2X4
A4X3
2740RD/WH
1
A7
2940RD/WH
3
J2
111WH
GX1
19X1
663D-GN
E
15
664TN
D
16
111WH
663D-GN
664TN
351BK/WH
F
351BK/WH
CX1
1314L-BU/WH
K7X3
4X5
1314L-BU/WH
H1X1
1314L-BU/WH
1314L-BU/WH
H6X2
1314L-BU/WH
A
EX4
1314L-BU/WH
1315D-BU/WH
J4X3
5X4
1315D-BU/WH
G3
1315D-BU/WH
1315D-BU/WH
H5
1315D-BU/WH
A
DX4
B B
1315D-BU/WH
-DE5 -DE7 DE5/DE7 DE5/DE7 -DE5 -DE7
250BK
C
450BK
1850BK
650BK
C
D D
G101G348G347G100G302
BCM-310A
BCM-510A
BCM-610A
C7X500 B3X600
J245 J246B3X200 E8 E9
X52AFuse Block -PassengerCompartment
X50AFuse Block -Underhood
A9BOutsideRearviewMirror -Passenger
A9AOutsideRearviewMirror -Driver
X50AFuse Block -Underhood
E4NPark/TurnSignalLamp -Left
E4PPark/TurnSignalLamp -Right
K9BodyControlModule
X50AFuse Block -Underhood
S26HazardWarningSwitch
2014-Exp
ress,
Sava
naElectrica
lBodyBuilders
Manual
4-16
Lightin
gExterior Lights Schematics (Rear Turn Signal Lamps)
3395087
618YE
C8X3
1X5
619D-GN
C6
2
618YE
A2X2
619D-GN
A4
618YE
C1X1
1
619D-GN
C3
2
618YE
A
C7X2
850BK
G
1050BK
G
618YE
619D-GN
C6
619YE
A
E
CUTAWAY CUTAWAY CARGO/PASSENGER
LOC
DESC
CARGO/PASSENGER
G401G402
BX101 BX402
DX405
E5TTail/Stopand TurnSignalLamp -Right
E5STail/Stopand TurnSignalLamp - Left
X50AFuse Block -Underhood
K9BodyControlModule
X52AFuse Block -PassengerCompartment
2014-Exp
ress,
Sava
naElectrica
lBodyBuilders
Manual
Lightin
g4-17
Exterior Lights Schematics (Stop Lamp Controls and CHMSL)
3395089
5V5V
B+
LOC
DESC
5359WH
6
45X1
54X1
15X3
5360BN
5
11
42
38
5361YE
4
61
26
5
(LU3)
(L20/L96/LMF)
(LGH)
5359WH
5360BN
5361YE
-LGH LGH LGH -LGH -LGH LGH
5380TN
3
13X3
5382BN/WH
1
14
5381GY
2
15
1320L-BU
A
2X6
850BK
B
1320L-BU
1320L-BU
5065WH
H7X3
5X5
1250BK
C7X1
1320L-BU
E2X2
CUTAWAY
150BK
CARGO/PASSENGER
AUX STOPLAMP(S)15A
C8X107
CX405
GX405
B1X318
AX419
G402 G102 G400
C7X107 B8
RX202 F P
E6CenterHighMountedStopLamp
B22BrakePedalPositionSensor
K20EngineControlModule
K9BodyControlModule
X50AFuse Block -Underhood
KR59StopLampRelay
2014-Exp
ress,
Sava
naElectrica
lBodyBuilders
Manual
4-18
Lightin
gExterior Lights Schematics (Backup Lamps and Backup Alarm)
3395092
BCK/UPLAMPPCBRelay K7
B+
38D-BU
K8X122X2
350BK
E2
24L-GN
A
K8X2
850BK
G
24L-GN
A
1050BK
G
24L-GN
24L-GN
1642L-GN
D3X3
J5X1
1642L-GN
F1X2
1642L-GN
1642L-GN
150BK
8S3 CUTAWAY UY7
A A
B
PASSENGER/CARGO PASSENGER/CARGO
LOC
DESC
G400G402 G401G302
FX402FX401
TAIL LAMP(S)BCK/UPF2710A
AUX/TRLRBCK/UPF2610A
HX405
X50AFuse Block -Underhood
X88Trailer
ConnectorP3BackupAlarm
E5ABackupLamp -Left
E5BBackupLamp -Right
K9BodyControlModule
X52AFuse Block -PassengerCompartment
2014-Exp
ress,
Sava
naElectrica
lBodyBuilders
Manual
Lightin
g4-19
Interior Lights Schematics (Inadvertent Lamp Control)
3395060
LOC
DESC
328PU
9
25X2
149D-BU/WH
12
18
1732OG
C
1
1732OG
A
1732OG
A
1732OG
C
1732OG
1732OG
1732OG
A
1732OG
1732OG
C
351BK/WH
8
1250BK
B
1732OG
1732OG
1732OG
1732OG
1732OG
1732OG
1732OG
1732OG
1850BK
B
1850BK
B
B
1850BK1050
BK
B
1050BK
B
DH6-DH6
-YF7 DH6+YF7
PASSENGER CUTAWAY/CARGO -YF7
Headlamp and Panel Dimmer Switch
G102G302 G401 G348
SX205
4X100
AX1090
JX304
J333 J332
J331
J407
D3X318
K9BodyControlModule
E22UnderhoodLamp
A3RSunshade -Right
A3LSunshade -Left
E37MDome/ReadingLamps -Middle
E37RDome/ReadingLamps -Rear
E37FDome/ReadingLamps -Front
2014-Exp
ress,
Sava
naElectrica
lBodyBuilders
Manual
4-20
Lightin
gInterior Lights Schematics (Dome Fluorescent Work Lamps (PRP with UF2))
3395061
B+ LOC
DESC
YF1/YF2/YF7
1042RD/BK
E1X1
1042RD
16
17
840OG
C1
840OG
A1
840OG
149D-BU/WH
A1X4
690GY/BK
C2
A8
149D-BU/WH
A
149D-BU/WH
A
149D-BU/WH
A
B2
149D-BU/WH
A
149D-BU/WH
A
150BK
B
150BK
B B
150BK
150BK
B
150BK
B
G403
UPFITTERAUX150A
DOMEFLUORESCENTWORK LAMPS10A
J302
J312
J350
K9BodyControlModule
X52AFuse Block -PassengerCompartment
X53AFuseBlock -RearBody
KR45FluorescentWork LampRelay
E21AFluorescentWork Lamp -Right AccessPanel
E21FFluorescentWork Lamp -Front Cargo
E21RFluorescentWork Lamp -Rear Cargo
E21LFFluorescentWork Lamp -Left FrontAccess Panel
E21LRFluorescentWork Lamp -Left RearAccess Panel
2014-Exp
ress,
Sava
naElectrica
lBodyBuilders
Manual
Lightin
g4-21
Interior Lights Schematics (Courtesy Lamp Control)
3650803
B+
690GY/BK
K7X1
5X2
149D-BU/WH
H2X1
149D-BU/WH
C7X3
149D-BU/WH
A3X2
149D-BU/WH
H7
149D-BU/WH
A
149D-BU/WH
A
149D-BU/WH
A
H8X2
350BK
E2X1
1050BK
B
1050BK
B
LOC
DESC
-YF7YF7
YF7 -YF7
A
149D-BU/WH
149D-BU/WH
(YF2/YF7)
850BK
???
1850BK
B
06 06/05-YF7
(05) (06)
(06)(05)
(06)
(05)
(06)(05)G302
J280
F30UA15A
G402G401
BX420 AX420X417
RX320
KX405
HX205
G348
X50AFuse Block -Underhood
X53AFuseBlock -RearBody
E37MDome/ReadingLamps -Middle
E37FDome/ReadingLamps -Front
K9BodyControlModule
KR78Courtesy LampsProvision Relay
E36AHDomeLamp
E37RDome/ReadingLamps -Rear
2014-Exp
ress,
Sava
naElectrica
lBodyBuilders
Manual
4-22
Lightin
gInterior Lights Dimming Schematics (Dimming Controls and LED Dimming)
3395063
X2 - A7(Not Used)
B+ B+
B+
12V
351BK/WH
8
44D-GN
11X3
13
812OG/WH
12
15
3840RD/WH
3
H2X3
2140RD/WH
2
K3
6316PK
2
6136PK
6
6136PK
DX2
350BK
1
350BK
8
6817YE
A4X1
18X3
6136BN
GX1
A6X1
6817YE
D
6817YE
7X1
6817YE
4
1751BK/WH
F
351BK/WH
5
C99 -UL5
6817YE
K34/W1YW1Y
-W1Y
6136BN
LOC
DESC
G301G302 G302G302
BCM-110A
BCM-210A
J207
STR/WHL/SNSR2A
J208
A15X200
S16DriverInformationCenterSwitch
X85SteeringWheel AirBag Coil
S70RSteeringWheelControlsSwitch -Right
S70LSteeringWheelControlsSwitch -Left
X52AFuse Block -PassengerCompartment
X50AFuse Block -Underhood
K9BodyControlModule
A11Radio
S40PassengerAir BagDisableSwitch
S30HeadlampSwitch
2014-Exp
ress,
Sava
naElectrica
lBodyBuilders
Manual
Lightin
g4-23
Interior Lights Dimming Schematics (I/P Bulb Dimming (1 of 2))
3395065
X205
LOC
DESC230
BN/WH
7
3X2
230BN/WH
B
230BN/WH
D
230BN/WH
CX1
230BN/WH
C2X1
230BN/WH
JL4
351BK/WH
A
351BK/WH
C8
351BK/WH
550BK
BX1
230BN/WH
B
J5X2
230BN/WH
230BN/WH
230BN/WH
C
A31 AU3
230BN/WH
A
230BN/WH
B
230BN/WH
C36 -C69
230BN/WH
230BN/WH
230BN/WH
C
A31 AU3
1850BK
C
1850BK
B
450BK
B
450BK
BF
450BK
G347 G348
J250
G302 G304
A6X500
D
J356
DX319 B6X600
K9BodyControlModule
S75TractionControlSwitch
X52AFuse Block -PassengerCompartment
S79DWindowSwitch -Driver
S13DDoor LockSwitch -Driver
S79PWindowSwitch -Passenger
S13PDoor LockSwitch -Passenger
S74Tow/HaulModeSwitch
S36InstrumentPanelDimmerSwitch
S85AuxiliaryBlowerMotorSwitch
S34FHVACControlsSwitchAssembly -Auxiliary Front
2014-Exp
ress,
Sava
naElectrica
lBodyBuilders
Manual
4-24
Lightin
gInterior Lights Dimming Schematics (I/P Bulb Dimming (2 of 2))
3395066
LOC
DESC
230BN/WH
A
230BN/WH
230BN/WH
230BN/WH
230BN/WH
A
-YF7YF7
230BN/WH
1850BK
B
1850BK
B
C69 -C69
G348
RX205
CX420
D
J356
J355
S34FHVACControlsSwitchAssembly -Auxiliary Front
S34RHVAC ControlsSwitchAssembly -Auxiliary Rear
2014-Exp
ress,
Sava
naElectrica
lBodyBuilders
Manual
Lighting 4-25
Description and Operation
Exterior Lighting SystemsDescription and Operation
Exterior LampsThe exterior lighting consist of the following lamps:
Headlamps Daytime running lamps (DRL) Park lamps Tail lamps License lamps Marker lamps Turn signal lamps Stop lamps Center high mounted stop lamp (CHMSL) Backup lamps
Low Beam Headlamp OperationThe headlamps may be turned ON in 3 different ways:
When the headlamp switch in the HEAD positionfor normal operations
When the headlamp switch is in the AUTOposition, for automatic lamp control (ALC)
When the headlamp switch is placed in the AUTOposition, with the windshield wipers ON in daylightconditions, after a 6 second delay
Battery voltage is applied at all times to the coil andswitch sides of the LOW BEAM PCB Relay located inthe underhood fuse block. With the headlamp switch inthe headlamps ON position, ground is applied throughthe headlamps ON switch signal circuit to the bodycontrol module (BCM) signaling the headlamps ONrequest. In response to this signal, the BCM appliesground through the low beam relay control circuitenergizing the LOW BEAM PCB Relay. With the relayenergized, battery voltage is applied through the switchside of the relay, the LTand RT LOW BEAM fuses, andthe low beam supply voltage circuits illuminating thelow beam headlamps.
High Beam Headlamp OperationBattery voltage is applied at all times to the coil andswitch sides of the HIGH BEAM PCB Relay located inthe underhood fuse block. When the headlamp dimmerswitch is placed in the high beam position, theheadlamp dimmer switch signal circuit to the BCM ispulled low signaling the headlamp high beam request.In response to this signal, the BCM applies groundthrough the high beam relay control circuit energizingthe high beam relay. With the relay energized, batteryvoltage is applied through the switch side of the relay,the LTand RT HIGH BEAM fuses, and the high beamsupply voltage circuits illuminating the high beamheadlamps. At the same time the BCM sends a serialdata message to the instrument panel cluster (IPC)requesting the IPC to illuminate the high beamindicator.
Flash to Pass (FTP)When the headlamp dimmer switch is pulled toward thedriver, the flash to pass signal circuit to the BCM ispulled low signaling the flash to pass request. The BCMthen turns ON the high beam headlamps as describedabove until the headlamp dimmer switch is released.If the low beam headlamps were ON during FTPoperation they will remain ON.
Daytime Running Lamps (DRL) andAutomatic Lamp Control (ALC)The low beam headlamps are used for DRL operationat a reduced intensity. The DRLs will operate only withthe ignition ON, the headlamp switch in the AUTOposition, and the gear selector out of the park position.No other exterior lamps such as the parking lamps, taillamps, etc. will be on when the DRL are being used.The instrument panel will not be illuminated either.DRL operation is determined by the ambient lightsensor and controlled by the body control module(BCM). The ambient light sensor is a light-sensitivetransistor used to monitor outside lighting conditions.The BCM provides a 5-volt reference signal to thesensor. The sensor will vary this voltage signal between0.2 and 4.9 volts depending on outside lightingconditions. The BCM monitors the ambient light sensorsignal circuit to determine if outside lighting conditionsare correct for either DRL or ALC operation. When theBCM determines the conditions are met for DRLoperation, it applies ground to the DRL relay controlcircuit energizing the DRL PCB Relay. With the relayenergized, battery voltage is applied through the switchside of the relay, the DRL 1 fuse, the DRL 2 fuse, bothlow beam headlamp fuses, and the low beam supplyvoltage circuits illuminating the headlamps at a reducedintensity. Any function or condition that turns on theheadlamps will cancel DRL operation.When the BCM detects low light conditions, it will turnOFF the daytime running lamps and turn ON the lowbeam headlamps as described above in Low BeamHeadlamp Operation. The BCM will also turn ON thelow beam headlamps in daylight conditions when thewindshield wipers are turned ON.
HDLPS Suggested IndicatorIf the park lamps are turned ON manually and theambient light sensor detects a low light condition thenthe body control module (BCM) will send a message tothe instrument panel cluster (IPC) to display theHEADLAMPS SUGGESTED message.
Lights ON WarningThe body control module (BCM) activates the lights ONwarning as requested by the headlamp dimmer switch.The lights ON warning sounds when the followingoccurs:
The key is out of the ignition. The BCM determines that the drivers door is open,
signal is low. The BCM determines that the headlamp switch is
in the PARK or HEAD position.
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4-26 Lighting
Park, Tail, Marker and License LampsThe park, tail, and marker lamps are turned ON whenthe headlamp switch is placed in either the HEAD orPARK lamp positions, or anytime the automatic lightcontrol (ALC) turns the headlamps ON. When theheadlamp switch is placed in the park lamp orheadlamp positions, ground is applied through theswitch signal circuit to the BCM indicating the park lampON request. In response to this signal, the BCM appliesground through the park lamp relay control circuitenergizing the PRK LAMP Relay. With the relayenergized, battery voltage is applied through the switchside of the relay, the park lamp fuses, and the supplyvoltage circuits illuminating the park, license, sidemarker, and tail lamps.
Turn Signal LampsThe BCM 3, BCM 5, and BCM 6 fuses located in theunderhood fuse block supply battery voltage to thebody control module (BCM) for turn signal, hazardlamp, and stop lamp operation. Voltage from the BCM 5fuse used for the front and rear left turn signals, voltagefrom the BCM 3 for the right front turn signal, whilevoltage from the BCM 6 fuse is used for the right rearturn signal. When the turn signal switch is place ineither the LEFTor RIGHT position, ground is appliedthrough the turn signal switch signal circuit to the BCMindicating the turn signal request. In response to thissignal, the BCM applies a pulsating voltage to the frontand rear turn signal lamps supply voltage circuitscycling the lamps ON and OFF. The BCM also sends amessage via to the instrument panel cluster (IPC) tocycle the turn signal indicator ON and OFF dependingon the position of the turn signal switch.
Hazard LampsThe hazard flashers may be activated in any powermode. When the hazard lamp switch is placed in theON position, ground is applied through the hazardswitch signal circuit to the body control module (BCM)indicating the hazard lamps ON request. In response tothis signal, the BCM applies a pulsating voltage thoughall front and rear turn signal supply voltage circuitscycling the lamps ON and OFF. The BCM also sends aserial data message to the instrument panel cluster(IPC) to cycle both turn signal indicators ON and OFF.
Stop LampsThe brake pedal position sensor is used to sense theaction of the driver application of the brake pedal. Thebrake pedal position sensor provides an analog voltagesignal that will increase as the brake pedal is applied.The body control module (BCM) provides a lowreference signal and a 5-volt reference voltage to thebrake pedal position sensor. When the variable signalreaches a voltage threshold indicating the brakes havebeen applied, the BCM will apply battery voltage to theright and left stop lamp control circuits, transmissioncontrol module (TCM), engine control module (ECM),center high mounted stop lamp (CHMSL) control circuit,and trailer brake control module if equipped. The stoplamps on this vehicle will not illuminate unless theignition is in the accessory, run, or crank positions.When the ignition is in the OFF position the stop lampswill not illuminate when the brake pedal is applied.
The stop lamps on this vehicle will not illuminate unlessthe ignition is in the accessory, run, or crank positions.When the ignition is in the OFF position the stop lampswill not illuminate when the brake pedal is applied.
Backup LampsWhen the gear selector is placed in the REVERSEposition, the powertrain control module (PCM) sends aserial data message to the BCM indicating the backuplamps ON request. The BCM then applies batteryvoltage through the backup relay control circuitenergizing the BCK/UP LAMP PCB Relay. With therelay energized, battery voltage is applied through theswitch side of the relay, the T/LAMP BCK/UP fuse, theAUX/TRLR BCK/UP fuse and the supply voltagecircuits illuminating the left and right backup lamps andthe backup alarm. The engine may need to be runningfor the backup lamps to function.
Rear Fog LampsThe rear fog lamps are located in the rear bumper. Thefog lamps will operate only when the ignition in the RUNor CRANK positions. When the rear fog lamp switch isturned ON, ground is applied through the rear fog lampswitch signal circuit to the body control module (BCM)indicating the rear fog lamps ON request. In responseto this signal, the BCM applies ground to the rear foglamp relay control circuit energizing the REAR FOG LPPCB Relay. With the relay energized, battery voltage isapplied through the switch side of the relay, the RRFOG LP fuse and the rear fog lamp supply voltagecircuit to the left and right rear fog lamps. The BCMsends a serial data message to the instrument panelcluster (IPC) requesting the rear fog lamp indicator beilluminated. The rear fog lamps will deactivate if theheadlamps are turned OFF, if the ignition is turned tothe OFF position upon a key cycle, or if the driver turnsthe rear fog lamp switch OFF.
Battery Rundown Protection/Inadvertent PowerThe BCM controls the lighting system through circuitsthat enable the exterior lamp functions of the parklamps, the head lamps, the fog lamps, and the interiorlamps. The BCM will open these enabling circuits10 minutes after the ignition switch is turned OFF withno lamp switch activity. If the ignition switch is turned toany position other than OFF, or if a lamp switch isactivated during this time period, the timer will reset foranother 10 minutes.
Interior Lighting SystemsDescription and OperationThe interior lighting consist of two groups; lamps thatmay not be manually dimmed (Interior Lamps) andlamps that may be dimmed (Interior Lamps Dimming).The first group listed below includes lamps that may notbe dimmed:
Front dome/reading lamps Middle dome/reading lamps Rear dome/reading lamps Sunshade Mirror Lamps Underhood Lamp
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Lighting 4-27
Interior Lamps Features
The interior lamps system features the followingfunctions:
An illuminated entry feature that illuminates thecourtesy lamps when entering the vehicle oractivating the remote keyless entry system.
An illuminated exit feature that illuminates thecourtesy lamps when the ignition key has beenremoved from the ignition.
An inadvertent power feature that supplies voltageto all interior lamps after the ignition is turned OFF.The inadvertent power feature will deactivate allinterior lamps after 10 minutes to prevent batteryrundown.
A theater dimming feature that will slowly dim theinterior lamps from full brightness to OFF.
Individual switches for control of each interiorlamp that is not illuminate with the interior lampswitch.
Courtesy Lamps (YF2/YF7)
When any one of the doors is opened, ground isapplied through the door latch door open switch and thedoor open switch signal circuit to the BCM indicting thedoor open position. In response to this signal, the BCMthen applies battery voltage through the courtesy lampsupply voltage circuits illuminating the courtesy lamps.
Courtesy Lamps (+YF2/YF7)
When any one of the doors is opened, ground isapplied through the door latch door open switch and thedoor open switch signal circuit to the BCM indicting thedoor open position. In response to this signal, the BCMthen applies battery voltage to the courtesy lamp relaycontrol circuit energizing the UPFITTR CTSY LAMPSPCB Relay. With the relay energized. battery voltage isapplied through the switch side of the relay and thesupply voltage circuits illuminating the courtesy lamps.
Courtesy Lamps Manual Operation
The courtesy lamps can be manually turned ON by theIP dimmer switch. When the dimmer switch is placed inthe DOME position, ground is applied through thedimmer switch and the courtesy lamp switch ON signalcircuit to the BCM indicating the courtesy lamps ONrequest. In response to this signal, the BCM thenapplies battery positive voltage through the courtesylamp supply voltage circuits illuminating the courtesylamps listed above. The courtesy lamps ON operationof the dimmer switch will override any BCM operation ofthe interior lamps already in progress.
Keyless Entry Interior Illumination
When the remote function actuator transmitter is usedto unlock the doors, the BCM receives a door-unlocksignal. The BCM must have inputs that indicate that theignition switch is OFF, the courtesy lamp switch is OFF,and all the doors are closed. The BCM will thenilluminate the courtesy lamps and will remainilluminated for approximately 25 seconds after the dooris closed. If the door locks are activated to the LOCKposition, or if the ignition switch is turned to either theRUN or START position, the BCM will turn OFF thecourtesy lamps immediately.
Courtesy/Illuminated Exit
The illuminated exit feature will activate the courtesylamps when the key IN input of the BCM transitionsfrom an active state to an inactive state (removing theignition key). When the key is removed from theignition, the key IN input to the BCM becomes inactive.The BCM will illuminate the courtesy lamps forapproximately 25 seconds.
Theater Dimming
The theater dimming feature that will slowly dim theinterior lamps from full brightness to OFF. The followingactions will over ride the theater dimming featurecausing the courtesy lamps to deactivate immediately ifno other BCM function commands the courtesylamps ON:
A transition from active to inactive of the interiorlamps switch, turning OFF the interior lampsswitch
A LOCK command from the remote keyless entrysystem
A last door closed locking function, locking andclosing all the doors
Underhood Compartment Lamp
The BCM supplies battery positive voltage through theinadvertent power courtesy lamps circuit to theunderhood compartment lamp. When the hood isopened, the underhood compartment lamp switchcloses to ground and the lamp illuminates.
Dome/Reading Lamps
The dome/reading lamp is a duel purpose lamp that canbe illuminated two different ways. First, the lamp can beturned ON during courtesy lamp operation as describedabove. Second, the lamps can be turned ONindividually for reading lamp operation by the lampswitch. The BCM supplies battery voltage through theinadvertent power courtesy lamp circuit to the dome/reading lamp for reading lamp operation only.
Sunshade Vanity Mirror Lamps
The BCM supplies battery voltage through theinadvertent power courtesy lamps circuit to the left andright vanity mirror lamps. When the vanity mirror coveron the sunshade is opened, the vanity mirror lampswitch is closed to ground and the lamp illuminates.
Interior Lamps DimmingThe second interior lighting group includes lamps whichmay be dimmed. This group may use a combination ofvacuum fluorescent (VF) illumination, LED illuminationand incandescent lamps.
Headlamp switch Tow/haul switch Traction control switch HVAC control module Driver window switch Driver power door lock switch Auxiliary blower motor switch Front passenger window switch Front passenger door lock switch Front auxiliary HVAC control assembly
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4-28 Lighting
Rear auxiliary HVAC control assembly Steering wheel controls Inflatable restraint I/P module disable switch Driver information center (DIC) display switch Radio
When the ignition switch is turned to the RUN position,the instrument panel cluster (IPC), radio VF display,and the HVAC control assembly turns ON at maximumbrightness. When the headlamp switch is in the PARKor HEADLAMP ON position, all incandescent and LEDback lighting turn ON at the dimming level indicated bythe instrument panel (I/P) dimmer switch. The dimmerswitch is used to increase and decrease the brightnessof the interior backlighting components. The BCMsupplies a voltage reference through the I/P dimmingvoltage reference circuit to the interior lamp dimmerswitch, which is part of the headlamp switch. When thedimmer switch is placed in a desired brightnessposition, reference voltage is applied through the
dimmer switch rheostat and the I/P lamps dimmerswitch signal circuit to the BCM. The BCM interpretsthis voltage signal, then applies a pulse widthmodulated (PWM) voltage through the I/P lamps supplyvoltage circuits and the LED dimming supply circuit toall related interior backlighting lamps illuminating themto the desired level of brightness.
Battery Rundown Protection /Inadvertent PowerThe BCM controls the lighting system through circuitsthat enable the exterior lamp functions of the parklamps, the head lamps, the fog lamps, and the interiorlamps. The BCM opens these enabling circuits10 minutes after the ignition switch is turned OFF withno lamp switch activity. If the ignition switch is turned toany position other than OFF, or if a lamp switch isactivated during this time period, the timer resets foranother 10 minutes.
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Mirrors 4-29
Mirrors
Schematic and Routing Diagrams
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4-30
Mirro
rsOutside Rearview Mirror Schematics (Power, Ground, Power Mirror Switches and Motors)
3395097
B+
M M M M
LOC
DESC
DE5/DE7
4340RD/WH
E
A6X2
4340RD/WH
89L-GN
F
88YE
H
889PU/WH
B
1498BN/WH
C
81WH
G
881OG/WH
A
450BK
D
88YE
88YE
F E H G
889PU/WH
889PU/WH
1498BN/WH
F E H G
1498BN/WH
1498BN/WH
881OG/WH
881OG/WH
G347
OSRVM SW5A
C8X500
J502
B7X600 A7A6
A8X500 D7 D8
X52AFuse Block -PassengerCompartment
S52OutsideRearviewMirrorSwitch
A9BOutsideRearview Mirror- Passenger
A9AOutside RearviewMirror - Driver
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rs4-31
Outside Rearview Mirror Schematics (Heated Mirrors)
3395100
B+ B+
IGN
LOC
DESC
86 30
85 87
(C49/DE5/DE7)
C49/DE5/DE7
4440RD/WH
AX3
H5X1
550BK
CX3
193WH
D
C4
350BK
E2
2267OG
D4X2
2267OG
D3
2267OG
2267OG
C C
1850BK
450BK
A A
G347
OSRVM HTR20A
HVACCNTRL10A
A7X500 A3X600
G304 G302
A9AOutsideRearviewMirror -Driver
A9BOutsideRearviewMirror -Passenger
X52AFuse Block -PassengerCompartment
A90Logic
KR5RearDefoggerRelay
S34HVACControlsSwitchAssembly
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4-32 Mirrors
Description and Operation
Outside Mirror Description andOperation
Outside Mirror System ComponentsThe power mirror system consists of the followingcomponents:
Power mirror switch Selector switch Left outside power mirror Right outside power mirror OSRVM 10A fuse HVAC control module Left outside power mirror Right outside power mirror
Each of the outside power mirrors contains tworeversible motors. The vertical motor operates the upand down directions and the horizontal motor operatesthe left and right directions. Each of the power mirrormotors are circuit breaker protected.
Power Mirror System ControlsThe power mirror switch incorporates a mirror selectswitch and a four position mirror direction switch.The mirror select switch allows the operator to selectthe mirror to be moved by rotating counterclockwise tothe L position, left outside power mirror, or rotatingclockwise to the R position, right outside power mirror.The mirror direction switch is a 4 position switch thatallows the operator to move the selected mirror up,down, left or right.
Power Mirror System OperationThe power mirror switch receives power through thebattery supply voltage circuit and the OSRVM fuse. Thepower mirror switch also receives a constant ground.
The four positions of the direction switch have dualswitch contacts. Each of the contacts are connected toopposing sides of the appropriate power mirror motorsthrough the selector switch. The selector switchinterrupts or completes these circuits depending on theposition of the selector switch (L or R).If the selector switch is placed in the L position and theup switch is depressed, battery voltage will be suppliedto the left outside power mirror vertical motor throughthe left mirror motor up direction circuit and return to thepower mirror switch through the mirror motor commoncircuit then to ground and the mirror will move up. If thedown switch is depressed, the common circuit suppliesbattery voltage and the left mirror motor up directioncircuit completes the path to the power mirror switchthen to ground and the mirror will move down.The remainder of the mirror functions operate in thesame manner as described above. The thing toremember is, that by placing the power mirror switch inopposing positions (left/right or up/down) will reversethe polarity of the mirror motor, utilizing the samecircuits and the power mirror will move accordingly.
Heated Mirror System Controls
The heated mirror system is activated by depressingthe rear window defogger switch, which is part of theHVAC control module. For further information on therear window defogger operation, refer to Rear WindowDefogger Description and Operation on page 46.
Heated Mirror System Operation
The heated mirror system operates in parallel to therear window defogger. Each outside rearview mirrorcontains a heating element that is connected to aconstant ground source. When the rear windowdefogger system is active, battery voltage is availableto the outside rearview mirrors through the heatedmirror supply voltage circuit. The mirrors will heat up toremove ice, snow or frost and will automaticallydeactivate when the rear defogger system has timedout, approximately 10 minutes.
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Vehicle Access 4-33
Vehicle Access
Schematic and Routing Diagrams
2014 - Express, Savana Electrical Body Builders Manual
4-34
Vehicle
Access
Release Systems Schematics (Access Panel Relay Control)
3395114
B+ LOC
DESC
1042RD/BK
E1X1
740OG
740OG
740OG
740OG
740OG
740OG
1344L-BU
A7X6
1095TN/BK
244L-BU
B8
294TN
1391L-GN
B7
1092PK
J409 J309 J408
15 11
13 12
5 1
3 2
10 6
78
(YF1/YF2/YF7)
1042RD/BK
1042RD/BK
740OG
18
19
UPFTR AUX 150A
PANELACTUATOR15A
O P Q
AX360
J302
J303
X52AFuse Block -PassengerCompartment
X53AFuseBlock -RearBody
X53AFuseBlock -RearBody
K9BodyControlModule
KR89RRRight RearAccess PanelRelay
KR89LFLeft FrontAccess PanelRelay
KR89LRLeft RearAccessPanelRelay
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4-35
Release Systems Schematics (Access Panel Actuators)
3395116
M M M M M M
LOC
DESC
1095TN/BK
3
1095TN/BK
3
294TN
3
294TN
3
1092PK
3
1092PK
3
750BK
44
750BK
4
750BK
4
750BK
4
750BK
4
750BK
1095TN/BK
294TN
1092PK
G403
O P Q
J409 J309 J408
M2EAccess PanelUnlatchActuator -Right SideFront
M2FAccess PanelUnlatchActuator -Right SideRear
M2AAccess PanelUnlatchActuator -Left FrontSide Front
M2BAccess PanelUnlatchActuator -Left FrontSide Rear
M2CAccess PanelUnlatchActuator -Left RearSide Front
M2DAccess PanelUnlatchActuator -Left RearSide Rear
X53AFuseBlock -RearBody
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4-36 Vehicle Access
Description and Operation
Door Ajar Indicator Description andOperation
Door Ajar Indicator SystemComponentsThe door ajar indicator system consists of the followingcomponents:
The body control module (BCM) The instrument panel cluster (IPC) The driver information center (DIC) The door ajar switch
Door Ajar OperationThe body control module (BCM) receives a discreteinput from the door ajar switch to indicate the status ofthe door. The BCM then communicates this status tothe instrument panel cluster (IPC) via GMLAN serialdata. The IPC, upon receipt of this message, willilluminate the door ajar message in the driverinformation center (DIC) and also send a GMLAN serialdata message to the radio to activate the door ajaraudible warning when the following conditions are met:
The transmission is shifted out of PARK. The vehicle speed is greater than 8 km/h (5 mph).
Power Door Locks Description andOperation
Door Lock System ComponentsThe power door lock system consists of the followingcomponents:
Driver door lock switch Front passenger door lock switch Rear cargo door lock switch Door lock relay Passenger door unlock relay Driver door unlock relay Cargo door unlock relay Body Control Module (BCM) Reversible door lock actuators in each of the
doors DRV LKS 10A fuse, driver door unlock relay
supply voltage CARGO UNLK 10A fuse, cargo door unlock relay
supply voltage DOOR LKS 20A fuse, door lock relay and
passenger door unlock relay supply voltage
Door Lock System ControlsThe power door lock system can be controlled by any ofthe following:
A power door lock or unlock switch activation A keyless entry transmission A lock out prevention function A last door locking function
Driver, Passenger and Cargo Door LockOperationWhen any of the door lock switches are placed in thelock position, a ground signal is applied to the BCMthrough the door lock signal circuit. Upon receiveingthis signal, the BCM grounds the control side of thedoor lock relay through the door lock relay controlcircuit. Since the other side of the door lock relaywinding is connected to battery voltage, the relay isenergized. This causes the contacts to close andcomplete the path from the DOOR LKS fuse throughthe battery voltage circuit. Voltage is then applied to thelock side of the door lock actuators through the doorlock actuator lock circuits. Since the other side of the allthe door lock actuators are connected to the normallyclosed contacts of their respective unlock relays toground, the doors lock.The lock function can also be accomplished by theBCM supplying ground to the door lock relay controlcircuit by either of the following:
A keyless entry lock transmission A last door lock function
Driver Door Unlock OperationWhen any of the door lock switches are placed in theunlock position, a ground signal is applied to the BCMthrough the door unlock signal circuit. Upon receiveingthis signal, the BCM grounds the control side of thedriver door unlock relay through the driver door unlockrelay control circuit. Since the other side of the driverdoor unlock relay winding is connected to batteryvoltage, the relay is energized. This causes thecontacts to close and complete the path from the DRVLKS fuse through the battery voltage circuit. Voltage isthen applied to the unlock side of the driver door lockactuator through the driver door lock actuator unlockcontrol circuit. Since the other side of the the driverdoor lock actuator is connected to the normally closedcontacts of the door lock relay to ground, the driverdoor unlocks.The driver door unlock function can also beaccomplished by the BCM supplying ground to thedriver door unlock relay control circuit by either of thefollowing:
A keyless entry unlock transmission A lock out prevention function
Passenger Door Unlock OperationWhen any of the door lock switches are placed in theunlock position, a ground signal is applied to the BCMthrough the door unlock signal circuit. Upon receiveingthis signal, the BCM grounds the control side of thepassenger door unlock relay through the door unlockrelay control circuit. Since the other side of the doorunlock relay winding is connected to battery voltage,the relay is energized. This causes the contacts toclose and complete the path from the DOOR LKS fusethrough the battery voltage circuit. Voltage is thenapplied to the unlock side of the passenger door lockactuators through the door lock actuator unlock controlcircuits. Since the other side of the the door lockactuators are connected to the normally closedcontacts of the door lock relay to ground, the passengerdoors unlock.
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Vehicle Access 4-37
The door unlock function can also be accomplished bythe BCM supplying ground to the passenger doorunlock relay control circuit during a keyless entryunlock transmission.
Cargo Door Unlock OperationWhen any of the door lock switches are placed in theunlock position, a ground signal is applied to the BCMthrough the door unlock signal circuit. Upon receiveingthis signal, the BCM grounds the control side of thecargo door unlock relay through the cargo door unlockrelay control circuit. Since the other side of the cargodoor unlock relay winding is connected to batteryvoltage, the relay is energized. This causes thecontacts to close and complete the path from theCARGO UNLK fuse through the battery voltage circuit.Voltage is then applied to the unlock side of the cargodoor lock actuator through the door lock actuatorunlock control circuit. Since the other side of the thecargo door lock actuator is connected to the normallyclosed contacts of the door lock relay to ground, thecargo door unlocks.The cargo door unlock function can also beaccomplished by the BCM supplying ground to thecargo door unlock relay control circuit during a keylessentry unlock transmission.
Delay Locking OperationThis feature allows the operator to lock all the doorsfrom a door lock switch with the side doors(s) open.The side cargo doors have contact plates that completethe power door lock and unlock control circuits, amongothers, when the side cargo doors are closed, andinterrupt these circuits when the doors are open. Whena lock function occurs and the BCM senses an activestate on any door ajar switch signal circuit the driver,front passenger and cargo doors will lock as described.The BCM continues to monitor door ajar switch signalcircuits. When the BCM senses an inactive state, doorclosed, the BCM will cycle the door lock relay againafter approximately 5 seconds to perform another lockfunction, thus locking the side cargo door(s).
Lockout PreventionThis feature prevents the locking of the driver door if theignition key is left in the ignition lock cylinder. If a lockfunction occurs from any door lock switch and the BCMsenses a door ajar and the key in ignition switch signalcircuit is in the yes state, the BCM will cycle the doorlock relay to lock the doors and then cycle the driverdoor unlock relay to unlock the driver door.
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4-38 Wipers and Washers
Wipers and Washers
Schematic and Routing Diagrams
2014 - Express, Savana Electrical Body Builders Manual
Wipers
andWashers
4-39
Wiper/Washer Schematics (Wiper Controls)
3395119
4425366658251070
332
LOC
DESC
6009TN/BK
MX3
8X1
1714L-BU
N
9
1715L-GN
K
5
94PK
L
24
6009TN/BK
1714L-BU
1715L-GN
94PK
D1X200 E11 E12 D6
K9BodyControlModule
S78Turn Signal/MultifunctionSwitch
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Wipers
andWashers
Wiper/Washer Schematics (Wiper and Washer Motor Control)
3395120
M
M
B+
LOC
DESC
91GY
H6X3
20X5
C7X1
95D-GN
1
G5X3
92PU
4
G4
860TN
21X5
H8
2268OG
15X4
G2
228OG
A
D1
350BK
B
196YE
7X4
3
351BK/WH
2
1250BK
5
1250BK
G102 G302
WPR25A
WASH15A
K9BodyControlModule
M75WindshieldWiper Motor
X50AFuse Block -Underhood
G24WindshieldWasherPump
K9BodyControlModule
KR12BWindshieldWiperRelay
KR12CWindshieldWiperSpeedControlRelay
KR11WindshieldWasherPump Relay
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Description and Operation
Wiper/Washer System Descriptionand Operation (Wiper and Washers)
Wiper/Washer System ComponentsThe Wiper/Washer System consists of the followingcomponents:
Windshield wiper/washer switch Body control module (BCM) WPR Relay WPR HI Relay Windshield wiper motor Windshield washer fluid pump Windshield washer fluid level switch Rain sensor module Instrument panel cluster (IPC) WPR Fuse 25 A WSW/PUMP Fuse 10 A RAP Fuse 10 A
Refer to CELL Link Error - Link target cell (cell ID62031) is invalid for this publication. on page ??.
Power and GroundsWith the ignition in the ON position, accessory voltageis supplied through the 25A WPR fuse to the WIPERrelay, the WIPER HI relay and the WSH relay that areall located in the underhood fuse block. Refer to Wiper/Washer Schematics on page 439.G101 provides ground for the windshield wiper motor.G104 provides ground for the WPR relay, the WPR HIrelay, the windshield washer fluid pump and thewindshield washer fluid level switch.
Modes of OperationThe normal wiper system function positions are asfollows:
MIST DELAY MANUAL LOW MANUAL HIGH WASH
Automatic Modes of Operation AUTOMATIC DELAY AUTOMATIC LOW AUTOMATIC HIGH
Automatic low speed and automatic high speed wipermodes are continuous wiper operations that arecontrolled by the outside moisture sensor. Automaticlow and high speed operation is utilized when theamount of precipitation on the windshield exceeds theautomatic delay or low threshold.
Moisture Sensitive WipersThe outside moisture sensor monitors moistureaccumulation on the windshield and uses a windshieldwiper/washer switch status input to provide wipe
commands to the body control module (BCM). TheDELAY positions on the wiper/washer switch are usedto activate the AUTOMATIC rain sensing operatingmode. They are also used to adjust the level ofsensitivity to moisture accumulation, which determinesthe dwell time for commanding a wiper motor wipecycle.Accessory voltage is supplied to the outside moisturesensor through the 10A RAP Fuse, located in the rearfuse block. The sensor is grounded through the groundcircuit and G402. Whenever the ignition is in the run oraccessory positions, the BCM sends the wiper/washerswitch status using a pulse width modulation (PWM)signal through the outside moisture sensor signal 1circuit to the outside moisture sensor. When a wipecycle is needed, the moisture sensor sends a PWMvoltage signal through the moisture sensor signal 2circuit back to the BCM requesting the wiper operation.The outside moisture sensor uses the moisture sensorsignal 2 circuit to command wiper motor wipe cyclesand to confirm the moisture sensor signal 1 is beingreceived. If at anytime communication between theoutside moisture sensor and BCM is lost, the BCM willuse the inputs from the windshield wiper/washer switchin the delay positions to operate the wiper motor atcontinuous variable delay intervals.
Low Speed OperationWhen the wiper switch is in the low speed position,ground is applied through a resistor internal to theswitch and the wiper switch low signal circuit to thebody control module (BCM). In response to this signal,the BCM energizes the WPR relay by applying batteryvoltage through the wiper relay control circuit to the coilside of the relay. This allows battery positive voltagefrom the WPR fuse to flow through the switch input sideof the WPR relay and out to the switch input side of theWPR HI relay. Since the wiper high relay isde-energized and its switch contacts are normallyclosed to the low speed control circuit of the windshieldwiper motor, the motor will operate at low speed.Wiper motor low speed operation and the WPR relaycan also be commanded ON/OFF by using a scan tool.Refer to CELL Link Error - Link target cell (cell ID72864) is invalid for this publication. on page ??.
Mist OperationWindshield wiper/washer system MISToperation isidentical to wiper Low operation, except that the mistswitch is a press and release type switch. When thewiper switch is moved to the mist position and released,low speed wiper motor operation is started and willcontinue until 1 wipe cycle is complete. If the wiperswitch is moved to the mist position and held, the wipermotor will operate in the low mode until the switch isreleased.
Delay OperationWindshield wiper delay operation is a low speed wipermotor function with a variable delay interval betweenthe wiper motor cycles. The delay interval is determinedby a series of 6 resistors within the wiper/washerswitch. The body control module (BCM) monitors thewiper switch low signal circuit to determine the delayinterval between the low speed wiper motor wipecycles.
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4-42 Wipers and Washers
High Speed OperationWhen the wiper switch is in the high speed position,ground is applied through the windshield wiper switchhigh signal circuit to the body control module (BCM)indicating the wiper high speed request. In response tothis signal, the BCM then energizes the WPR relay, asstated above, and the WPR HI relay by applying groundthrough the control circuit to the coil side of the relay.With the wiper high relay energized and its switchcontacts closed to the high speed control circuit of thewiper motor, the motor will operate at high speed.The wiper high speed relay can also be commandedON/OFF by using a scan tool. However, beforecommanding the wiper motor high speed mode ON/OFF using a scan tool, the WPR relay must beenergized by placing the wiper switch in the low speedposition. Refer to CELL Link Error - Link target cell (cellID 72864) is invalid for this publication. on page ??.
Wash OperationWhen the windshield Wash switch is pressed, ground isapplied through the switch contacts and the windshieldwasher switch signal circuit to the body control module(BCM) indicating the windshield wash request. TheBCM then energizes the WPR relay, as stated above,and the WSH relay by applying ground through thecontrol circuit to the coil side of the relay. With the washrelay energized, battery voltage from the WPR fuse isapplied through the switch side of the relay and out tothe control circuit of the windshield washer fluid pump.The wiper motor will operate for 2 wipe cycles after thewash switch is released.The WSH relay can also be commanded ON/OFF byusing a scan tool. Refer to CELL Link Error - Link targetcell (cell ID 72864) is invalid for this publication.on page ??.
Park Position OperationWindshield wiper motor park operation is controlled bythe body control module (BCM) using an input from thepark switch that is located within the wiper motor
assembly. The BCM monitors the windshield wipermotor park switch signal circuit, to determine if thewindshield wiper blades are at the bottom of the glass.During wiper operation, each time the wiper blades areat the bottom of the glass, the park switch ismomentarily closed to ground signaling the BCM thewiper position. When the wiper switch is turned to theOFF position while the wiper motor is somewhere inmid-cycle, the BCM will continue to operate the motoruntil the wipers reach the park position. If the ignition isturned OFF while the wipers are in mid-cycle, thewipers will stop immediately where they are. The BCMwill park the wipers the next time the ignition isturned ON.
Washer Fluid LOWADD FLUID MessageThe WASHER FLUID LOW ADD FLUID message iscontrolled by the instrument panel cluster (IPC) usingan input from the washer fluid level switch. With theignition in the ON position, the IPC applies ignitionvoltage through an internal resistor and the windshieldwasher fluid level signal circuit to the windshieldwasher fluid level switch. The IPC then monitors thisvoltage to determine the washer fluid level. With thewasher fluid above a determined level, the washer fluidlevel switch is open and the IPC detects voltage on thesignal circuit. When the washer fluid reaches the pointwhere the driver should be informed that the washerfluid is low, the washer fluid level switch closes. Whenthe washer fluid level switch is closed, the washer fluidlevel signal circuit is pulled low and the IPC displays theWASHER FLUID LOW ADD FLUID message on thedriver information center (DIC). In order to prevent theWASHER FLUID LOW ADD FLUID message frombeing displayed while sloshing is occurring in thewasher fluid container, the IPC is programed with a1 minute delay before changing states of the WASHERFLUID LOW ADD FLUID message during an ignitioncycle.
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Table of Contents 8-1
Section 8
Driver Information and Entertainment
Cellular, Entertainment, and Navigation . . . . . 8-3Schematic and Routing Diagrams . . . . . . . . . . . . . . . 8-3Radio/Navigation System Schematics . . . . . . . . . . . 8-4OnStar/Telematics Schematics . . . . . . . . . . . . . . . . . . 8-8Description and Operation . . . . . . . . . . . . . . . . . . . . . . . 8-9OnStar Description and Operation . . . . . . . . . . . . . . . 8-9Radio/Audio System Description andOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16
Displays and Gauges . . . . . . . . . . . . . . . . . . . . . . . . . 8-20Schematic and Routing Diagrams . . . . . . . . . . . . . . 8-20Instrument Cluster Schematics . . . . . . . . . . . . . . . . . 8-21Audible Warnings Schematics . . . . . . . . . . . . . . . . . . 8-26
Description and Operation . . . . . . . . . . . . . . . . . . . . . . 8-27Audible Warnings Description and Operation . . . 8-27Driver Information Center (DIC) Description andOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-28
Indicator/Warning Message Description andOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-31
Instrument Cluster Description andOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-31
Secondary and Configurable CustomerControls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-33Schematic and Routing Diagrams . . . . . . . . . . . . . . 8-33Steering Wheel Secondary/Configurable ControlSchematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-34
Description and Operation . . . . . . . . . . . . . . . . . . . . . . 8-35Steering Wheel Controls Description andOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-35
2014 - Express, Savana Electrical Body Builders Manual
Cellular, Entertainment, and Navigation 8-3
Cellular, Entertainment, and Navigation
Schematic and Routing Diagrams
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8-4
Cellu
lar,Enterta
inment,andNavigatio
nR