Full Size Vans (Cargo & Passenger) and Cutaways

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


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


1-4 General Information


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


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



JL4 CONTROL ACTIVE BRAKE

K05 HEATER ENGINE BLOCK




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


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


1-6 General Information


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


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




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


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



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


Fixed and Moveable Windows 4-3

Fixed and Moveable Windows

Schematic and Routing Diagrams


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


S34HVACControlsSwitchAssembly


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.


Horns 4-7

Horns



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


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.


4-10 Lighting

Lighting



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


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


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


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


TrailerConnector/ProvisionSchematics

E4NPark/TurnSignalLamp -Left

E4PPark/TurnSignalLamp -Right

E7License PlateLamp

KR53ParkLampsRelay


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



A9BOutsideRearviewMirror -Passenger

A9AOutsideRearviewMirror -Driver


E4NPark/TurnSignalLamp -Left

E4PPark/TurnSignalLamp -Right

K9BodyControlModule


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


K9BodyControlModule


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


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


X88Trailer

ConnectorP3BackupAlarm

E5ABackupLamp -Left

E5BBackupLamp -Right

K9BodyControlModule


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


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


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



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



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


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


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.


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


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


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.


Mirrors 4-29

Mirrors



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


S52OutsideRearviewMirrorSwitch

A9BOutsideRearview Mirror- Passenger

A9AOutside RearviewMirror - Driver

2014-Express,

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Manual

Mirro

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


A90Logic

KR5RearDefoggerRelay

S34HVACControlsSwitchAssembly

2014-Express,

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4-32 Mirrors


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.


Vehicle Access 4-33

Vehicle Access



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




K9BodyControlModule

KR89RRRight RearAccess PanelRelay

KR89LFLeft FrontAccess PanelRelay

KR89LRLeft RearAccessPanelRelay

2014-Exp

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Manual

Vehicle

Access

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


2014-Exp

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4-36 Vehicle Access


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.


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.


4-38 Wipers and Washers

Wipers and Washers



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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4-40

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


G24WindshieldWasherPump

K9BodyControlModule

KR12BWindshieldWiperRelay

KR12CWindshieldWiperSpeedControlRelay

KR11WindshieldWasherPump Relay

2014-Exp

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Wipers and Washers 4-41


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.


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.



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


Cellular, Entertainment, and Navigation 8-3

Cellular, Entertainment, and Navigation



8-4

Cellu

lar,Enterta

inment,andNavigatio

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Documents

Full Size Vans (Cargo & Passenger) and Cutaways