Fuse Box Diagrams GMC Yukon (GMT800) (2003-2006)

In this article, you will find information about the fuses of the GMC Yukon/Yukon XL (GMT800) (models 2003, 2004, 2005, and 2006) , including diagrams of the fuse boxes, a list of fuses and relays, their designation, and the location of the fuse blocks within the vehicle.

GMC Yukon (GMT800)(2003-2006)

Checking and Replacing Fuses in GMC Yukon

The wiring circuits in your vehicle are protected from short circuits by a combination of fuses, circuit breakers and fusible thermal links. This greatly reduces the chance of fires caused by electrical problems. Look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. You may have spare fuses located behind the fuse block access door. These can be used to replace a bad fuse.

Caution!

  • Be sure you replace a bad fuse with a new one of the identical size and rating.
  • Always keep the covers on any electrical component.

Location of Fuse Boxes

Instrument Panel Fuse Block:
The fuse block access door is on the driver’s side edge of the instrument panel. Pull off the cover to access the fuse block.
GMC Yukon (GMT800)(2003-2006): Instrument panel fuse box location

Center Instrument Panel Fuse Block:
The center instrument panel fuse block is located underneath the instrument panel, to the left of the steering column.
GMC Yukon (GMT800)(2003-2006): Instrument panel fuse box location

Underhood Fuse Block:
The underhood electrical center is located on the driver’s side of the engine compartment near the battery. Lift the cover for access to the fuse/relay block.
GMC Yukon (GMT800)(2003-2006): Engine compartment fuse box location

The windshield wiper motor is protected by an internal circuit breaker and a fuse. If the motor overheats due to heavy snow, etc., the wiper will stop until the motor cools.


Fuse Box Diagrams

2003

Instrument Panel Fuse Block

GMC Yukon (GMT800)(2003): Instrument panel fuse box diagram

List of fuses in the Instrument Panel Fuse Block (2003)
FusesUsage
RR WiperRear Window Wiper Switch
SEO ACCYSpecial Equipment Option Accessory
WS WPRWindshield Wipers
TBC ACCYTruck Body Controller Accessory
IGN 3Ignition, Heated Seats
4WDFour-Wheel Drive System, Auxiliary Battery
HTR A/CClimate Control System
LOCKPower Door Lock Relay (Lock Function)
HVAC 1Inside Rearview Mirror, Climate Control System
L DOORDriver’s Door Harness Connection
CRUISECruise Control
UNLOCKPower Door Lock Relay (Unlock Function)
RR FOG LPRear Fog Lamp (Export Only)
BRAKEAnti-Lock Brake System
DRIVER UNLOCKPower Door Lock Relay (Driver’s Door Unlock Function)
IGN 0PCM, TCM
TBC IGN 0Truck Body Controller
VEH CHMSLVehicle and Trailer High Mounted Stoplamp
LT TRLR ST/TRNLeft Turn Signal / Stop Trailer
LT TRNLeft Turn Signals and Sidemarkers
VEH STOPVehicle Stoplamps, Brake Module, Electronic Throttle Control Module
RT TRLR ST/TRNRight Turn Signal / Stop Trailer
RT TRNRight Turn Signals and Sidemarkers
BODYHarness Connector
DDMDriver Door Module
AUX PWR 2Rear Cargo Area Power Outlets
LOCKSPower Door Lock System
ECCRear Electronic Climate Control
TBC 2CTruck Body Controller
FLASHFlasher Module
CB LT DOORSLeft Power Window Circuit Breaker
TBC 2BTruck Body Controller
TBC 2ATruck Body Controller
Center Instrument Panel Fuse Block

GMC Yukon (GMT800)(2003): Instrument panel fuse box diagram

List of fuses in the Center Instrument Panel Fuse Block (2003)
DeviceUsage
SEOSpecial Equipment Option
TRAILERTrailer Brake Wiring
UPFITUpfitter (Not Used)
SL RIDERide Control Harness Connection
HDLR 2Headliner Wiring Connector
BODYBody Wiring Connector
DEFOGRear Defogger Relay
HDLNR 1Headliner Wiring Connector 1
SPARE RELAYNot Used
CB SEATDriver and Passenger Seat Module Circuit Breaker
CB RT DOORRight Power Window Circuit Breaker
SPARENot Used
INFOInfotainment Harness Connection
Underhood Fuse Block

GMC Yukon (GMT800)(2003): Under-hood compartment fuse box diagram

List of fuses in the Underhood Fuse Block (2003)
FusesUsage
GLOW PLUGNot Used
CUST FEEDGasoline Accessory Power
STUD #1Auxiliary Power (Single Battery and Diesels Only) / Dual Battery (TP2) Do not install fuse.
MBECMid Bussed Electrical Center Power Feed, Front Seats, Right Doors
BLOWERFront Climate Control Fan
LBECLeft Bussed Electrical Center, Door Modules, Door Locks, Auxiliary Power Outlet-Rear Cargo Area and Instrument Panel
STUD 2Accessory Power / Trailer Wiring Brake Feed
ABSAnti-Lock Brakes
VSES/ECASVehicle Stability
IGN AIgnition Power
IGN BIgnition Power
LBEC 1Left Bussed Electrical Center, Left Doors, Truck Body Controller, Flasher Module
TRL PARKParking Lamps Trailer Wiring
RR PARKRight Rear Parking and Sidemarker Lamps
LR PARKLeft Rear Parking and Sidemarker Lamps
PARK LPParking Lamps Relay
STARTERStarter Relay
INTPARKInterior Lamps
STOP LPStoplamps
TBC BATTTruck Body Controller Battery Feed
SUNROOFSunroof
SEO B2Off-Road Lamps
4WSVent Solenoid Canister/Quadrasteer Module Power
RR HVACRear Climate Control
AUX PWRAuxiliary Power Outlet - Console
IGN 1Ignition Relay
PCM 1Powertrain Control Module
ETC/ECMElectronic Throttle Control, Electronic Brake Controller
IGN EInstrument Panel Cluster, Air Conditioning Relay, Turn Signal / Hazard Switch, Starter Relay
RTDRide Control
TRL B/UBackup Lamps Trailer Wiring
PCM BPowertrain Control Module, Fuel Pump
F/PMPFuel Pump (Relay)
B/U LPBack-up Lamps, Automatic Transmission Shift Lock Control System
RR DEFOGRear Window Defogger
HDLP-HIHeadlamp High Beam Relay
PRIMENot Used
SIRSupplemental Inflatable Restraint System
FRT PARKFront Parking Lamps, Sidemarker Lamps
DRLDaytime Running Lamps (Relay)
SEO IGNRear Defog Relay
TBC IGN1Truck Body Controller Ignition
HI HDLP-LTHigh Beam Headlamp-Left
LH HIDNot Used
DRLDaytime Running Lamps
IPC/DICInstrument Panel Cluster / Driver Information Center
HVAC/ECASClimate Control Controller
CIG LTRCigarette Lighter
HI HDLP-RTHigh Beam Headlamp-Right
HDLP-LOWHeadlamp Low Beam Relay
A/C COMPAir Conditioning Compressor
A/C COMPAir Conditioning Compressor Relay
RR WPRRear Wiper / Washer
RADIOAudio System
SEO B1Mid Bussed Electrical Center, HomeLink, Rear Heated Seats
LO HDLP-LTHeadlamp Low Beam-Left
BTSIBrake Transmission Shift Interlock System
CRANKStarting System
LO HDLP-RTHeadlamp Low Beam-Right
FOG LPFog Lamp Relay
FOG LPFog Lamps
HORNHorn Fuse
HORNHorn Relay
W/S WASHWindshield and Rear Window Washer Pump Relay
W/S WASHWindshield and Rear Window Washer Pump
INFOOnStar / Rear Seat Entertainment
RADIO AMPRadio Amplifier
RH HIDNot Used
EAPElectric Adjustable Pedals
TRECAll-Wheel Drive Module
SBASupplemental Brake Assist
1*Gasoline Engine and Fuel Injection Rail #2
2*Gasoline Engine and Fuel Injection Rail #1
3*Gasoline Engine; Oxygen Sensors
4*Gasoline Engine; Oxygen Sensors
5*PCM Ignition

2004

Instrument Panel Fuse Block

GMC Yukon (GMT800)(2004): Instrument panel fuse box diagram

List of fuses in the Instrument Panel Fuse Block (2004)
FusesUsage
RR WiperRear Window Wiper Switch
SEO ACCYSpecial Equipment Option Accessory
WS WPRWindshield Wipers
TBC ACCYTruck Body Controller Accessory
IGN 3Ignition, Heated Seats
4WDFour-Wheel Drive System, Auxiliary Battery
HTR A/CClimate Control System
LOCKPower Door Lock Relay (Lock Function)
HVAC 1Inside Rearview Mirror, Climate Control System
L DOORDriver’s Door Harness Connection
CRUISECruise Control
UNLOCKPower Door Lock Relay (Unlock Function)
RR FOG LPRear Fog Lamp (Export Only)
BRAKEAnti-Lock Brake System
DRIVER UNLOCKPower Door Lock Relay (Driver’s Door Unlock Function)
IGN 0PCM, TCM
TBC IGN 0Truck Body Controller
VEH CHMSLVehicle and Trailer High Mounted Stoplamp
LT TRLR ST/TRNLeft Turn Signal / Stop Trailer
LT TRNLeft Turn Signals and Sidemarkers
VEH STOPVehicle Stoplamps, Brake Module, Electronic Throttle Control Module
RT TRLR ST/TRNRight Turn Signal / Stop Trailer
RT TRNRight Turn Signals and Sidemarkers
BODYHarness Connector
DDMDriver Door Module
AUX PWR 2Rear Cargo Area Power Outlets
LOCKSPower Door Lock System
ECORear Electronic Climate Control, Liftgate
TBC 2CTruck Body Controller
FLASHFlasher Module
CB LT DOORSLeft Power Window Circuit Breaker
TBC 2BTruck Body Controller
TBC 2ATruck Body Controller
Center Instrument Panel Fuse Block

GMC Yukon (GMT800)(2004): Instrument panel fuse box diagram

List of fuses in the Center Instrument Panel Fuse Block (2004)
DeviceUsage
SEOSpecial Equipment Option
TRAILERTrailer Brake Wiring
UPFITUpfitter (Not Used)
SL RIDERide Control Harness Connection
HDLR 2Headliner Wiring Connector
BODYBody Wiring Connector
DEFOGRear Defogger Relay
HDLNR1Headliner Wiring Connector 1
SPARE RELAYNot Used
CB SEATDriver and Passenger Seat Module Circuit Breaker
CB RT DOORRight Power Window Circuit Breaker
SPARENot Used
INFOInfotainment Harness Connection
Underhood Fuse Block

GMC Yukon (GMT800)(2004): Under-hood compartment fuse box diagram

List of fuses in the Underhood Fuse Block (2004)
FusesUsage
GLOW PLUGNot Used
CUST FEEDGasoline Accessory Power
STUD #1Auxiliary Power (Single Battery and Diesels Only) / Dual Battery (TP2) Do not install fuse.
MBECMid Bussed Electrical Center Power Feed, Front Seats, Right Doors
BLOWERFront Climate Control Fan
LBECLeft Bussed Electrical Center, Door Modules, Door Locks, Auxiliary Power Outlet-Rear Cargo Area and Instrument Panel
STUD 2Accessory Power / Trailer Wiring Brake Feed
ABSAnti-Lock Brakes
VSES/ECASVehicle Stability
IGN AIgnition Power
IGN BIgnition Power
LBEC 1Left Bussed Electrical Center, Left Doors, Truck Body Controller, Flasher Module
TRL PARKParking Lamps Trailer Wiring
RR PARKRight Rear Parking and Sidemarker Lamps
LR PARKLeft Rear Parking and Sidemarker Lamps
PARK LPParking Lamps Relay
STARTERStarter Relay
INTPARKInterior Lamps
STOP LPStoplamps
TBC BATTTruck Body Controller Battery Feed
SUNROOFSunroof
SEO B2Off-Road Lamps
4WSVent Solenoid Canister / Quadrasteer Module Power
RR HVACRear Climate Control
AUX PWRAuxiliary Power Outlet - Console
IGN 1Ignition Relay
PCM 1Powertrain Control Module
ETC/ECMElectronic Throttle Control, Electronic Brake Controller
IGN EInstrument Panel Cluster, Air Conditioning Relay, Turn Signal / Hazard Switch, Starter Relay
RTDRide Control
TRL B/UBackup Lamps Trailer Wiring
PCM BPowertrain Control Module, Fuel Pump
F/PMPFuel Pump (Relay)
B/U LPBack-up Lamps, Automatic Transmission Shift Lock Control System
RR DEFOGRear Window Defogger
HDLP-HIHeadlamp High Beam Relay
PRIMENot Used
SIRSupplemental Inflatable Restraint System
FRT PARKFront Parking Lamps, Sidemarker Lamps
DRLDaytime Running Lamps (Relay)
SEO IGNRear Defog Relay
TBC IGN1Truck Body Controller Ignition
HI HDLP-LTHigh Beam Headlamp-Left
LH HIDNot Used
DRLDaytime Running Lamps
IPC/DICInstrument Panel Cluster / Driver Information Center
HVAC/ECASClimate Control Controller
CIG LTRCigarette Lighter
HI HDLP-RTHigh Beam Headlamp-Right
HDLP-LOWHeadlamp Low Beam Relay
A/C COMPAir Conditioning Compressor
A/C COMPAir Conditioning Compressor Relay
RR WPRRear Wiper / Washer
RADIOAudio System
SEO B1Mid Bussed Electrical Center, HomeLink, Rear Heated Seats
LO HDLP-LTHeadlamp Low Beam-Left
BTSIBrake Transmission Shift Interlock System
CRANKStarting System
LO HDLP-RTHeadlamp Low Beam-Right
FOG LPFog Lamp Relay
FOG LPFog Lamps
HORNHorn Fuse
HORNHorn Relay
W/S WASHWindshield and Rear Window Washer Pump Relay
W/S WASHWindshield and Rear Window Washer Pump
INFOOnStar/Rear Seat Entertainment
RADIO AMPRadio Amplifier
RH HIDNot Used
EAPElectric Adjustable Pedals
TRECAll-Wheel Drive Module
SBASupplemental Brake Assist
1*Gasoline Engine and Fuel Injection Rail #2
2*Gasoline Engine and Fuel Injection Rail #1
3*Gasoline Engine; Oxygen Sensors
4*Gasoline Engine; Oxygen Sensors
5*PCM Ignition

2005

Instrument Panel Fuse Block

GMC Yukon (GMT800)(2005): Instrument panel fuse box diagram

List of fuses in the Instrument Panel Fuse Block (2005)
FusesUsage
RR WPRRear Window Wiper Switch
SEO ACCYSpecial Equipment Option Accessory
WS WPRWindshield Wipers
TBC ACCYTruck Body Controller Accessory
IGN 3Ignition, Heated Seats
4WDFour-Wheel Drive System, Auxiliary Battery
HTR A/CClimate Control System
LOCKPower Door Lock Relay (Lock Function)
HVAC 1Inside Rearview Mirror, Climate Control System
L DOORDriver’s Door Harness Connection
CRUISECruise Control
UNLOCKPower Door Lock Relay (Unlock Function)
RR FOG LPRear Fog Lamp (Export Only)
BRAKEAnti-Lock Brake System
DRIVER UNLOCKPower Door Lock Relay (Driver’s Door Unlock Function)
IGN 0PCM, TCM
TBC IGN 0Truck Body Controller
VEH CHMSLVehicle and Trailer High Mounted Stoplamp
LT TRLR ST/TRNLeft Turn Signal / Stop Trailer
LT TRNLeft Turn Signals and Sidemarkers
VEH STOPVehicle Stoplamps, Brake Module, Electronic Throttle Control Module
RT TRLR ST/TRNRight Turn Signal / Stop Trailer
RT TRNRight Turn Signals and Sidemarkers
BODYHarness Connector
DDMDriver Door Module
AUX PWR 2Rear Cargo Area Power Outlets
LOCKSPower Door Lock System
ECCRear Electronic Climate Control, Liftgate
TBC 2CTruck Body Controller
FLASHFlasher Module
CB LT DOORSLeft Power Window Circuit Breaker
TBC 2BTruck Body Controller
TBC 2ATruck Body Controller
1*Gasoline Engine and Fuel Injection Rail #2
2*Gasoline Engine and Fuel Injection Rail #1
3*Gasoline Engine; Oxygen Sensors
4*Gasoline Engine; Oxygen Sensors
5*PCM Ignition
Center Instrument Panel Fuse Block

GMC Yukon (GMT800)(2005): Instrument panel fuse box diagram

List of fuses in the Center Instrument Panel Fuse Block (2005)
DeviceUsage
SEOSpecial Equipment Option
TRAILERTrailer Brake Wiring
UPFITUpfitter (Not Used)
SL RIDERide Control Harness Connection
HDLR 2Headliner Wiring Connector
BODYBody Wiring Connector
DEFOGRear Defogger Relay
HDLNR 1Headliner Wiring Connector 1
SPARE RELAYNot Used
CB SEATDriver and Passenger Seat Module Circuit Breaker
CB RT DOORRight Power Window Circuit Breaker
SPARENot Used
INFOInfotainment Harness Connection
Underhood Fuse Block

GMC Yukon (GMT800)(2005): Under-hood compartment fuse box diagram

List of fuses in the Underhood Fuse Block (2005)
FusesUsage
GLOW PLUGNot Used
CUST FEEDGasoline Accessory Power
HYBRIDHybrid
STUD #1Auxiliary Power (Single Battery and Diesels Only) / Dual Battery (TP2) Do not install fuse.
MBECMid Bussed Electrical Center Power Feed, Front Seats, Right Doors
BLOWERFront Climate Control Fan
LBECLeft Bussed Electrical Center, Door Modules, Door Locks, Auxiliary Power Outlet - Rear Cargo Area and Instrument Panel
STUD 2Accessory Power / Trailer Wiring Brake Feed
ABSAnti-Lock Brakes
VSES/ECASVehicle Stability
IGN AIgnition Power
IGN BIgnition Power
LBEC 1Left Bussed Electrical Center, Left Doors, Truck Body Controller, Flasher Module
TRL PARKParking Lamps Trailer Wiring
RR PARKRight Rear Parking and Sidemarker Lamps
LR PARKLeft Rear Parking and Sidemarker Lamps
PARK LPParking Lamps Relay
STRTRStarter Relay
INTPARKInterior Lamps
STOP LPStoplamps
TBC BATTTruck Body Controller Battery Feed
S/ROOFSunroof
SEO B2Off-Road Lamps
4WSVent Solenoid Canister / Ouadrasteer Module Power
RR HVACRear Climate Control
AUX PWRAuxiliary Power Outlet - Console
IGN 1Ignition Relay
PCM 1Powertrain Control Module
ETC/ECMElectronic Throttle Control, Electronic Brake Controller
IGN EInstrument Panel Cluster, Air Conditioning Relay, Turn Signal / Hazard Switch, Starter Relay
RTDRide Control
TRL B/UBackup Lamps Trailer Wiring
PCM BPowertrain Control Module, Fuel Pump
F/PMPFuel Pump (Relay)
B/U LPBack-up Lamps, Automatic Transmission Shift Lock Control System
RR DEFOGRear Window Defogger
HDLP-HIHeadlamp High Beam Relay
PRIMENot Used
AIRBAGSupplemental Inflatable Restraint System
FRT PARKFront Parking Lamps, Sidemarker Lamps
DRLDaytime Running Lamps (Relay)
SEO IGNRear Defog Relay
TBC IGN1Truck Body Controller Ignition
HI HDLP-LTHigh Beam Headlamp-Left
LH HIDNot Used
DRLDaytime Running Lamps
RVCRegulated Voltage Control
IPC/DICInstrument Panel Cluster / Driver Information Center
HVAC/ECASClimate Control Controller
CIG LTRCigarette Lighter
HI HDLP-RTHigh Beam Headlamp-Right
HDLP-LOWHeadlamp Low Beam Relay
A/C COMPAir Conditioning Compressor
A/C COMPAir Conditioning Compressor Relay
RR WPRRear Wiper / Washer
RADIOAudio System
SEO B1Mid Bussed Electrical Center, HomeLink, Rear Heated Seats
LO HDLP-LTHeadlamp Low Beam-Left
BTSIBrake Transmission Shift Interlock System
CRNKStarting System
LO HDLP-RTHeadlamp Low Beam-Right
FOG LPFog Lamp Relay
FOG LPFog Lamps
HORNHorn Fuse
HORNHorn Relay
W/S WASHWindshield and Rear Window Washer Pump Relay
W/S WASHWindshield and Rear Window Washer Pump
INFOOnStar / Rear Seat Entertainment
RADIO AMPRadio Amplifier
RH HIDNot Used
EAPElectric Adjustable Pedals
TRECAll-Wheel Drive Module
SBASupplemental Brake Assist
1*Gasoline Engine and Fuel Injection Rail #2
2*Gasoline Engine and Fuel Injection Rail #1
3*Gasoline Engine; Oxygen Sensors
4*Gasoline Engine; Oxygen Sensors
5*PCM Ignition

2006

Instrument Panel Fuse Block

GMC Yukon (GMT800)(2006): Instrument panel fuse box diagram

List of fuses in the Instrument Panel Fuse Block (2006)
FusesUsage
RR WPRRear Window Wiper Switch
SEO ACCYSpecial Equipment Option Accessory
WS WPRWindshield Wipers
TBC ACCYTruck Body Controller Accessory
IGN 3Ignition, Heated Seats
4WDFour-Wheel Drive System, Auxiliary Battery
HTR A/CClimate Control System
LCKPower Door Lock Relay (Lock Function)
HVAC 1Inside Rearview Mirror, Climate Control System
LT DRDriver’s Door Harness Connection
CRUISECruise Control
UNLCKPower Door Lock Relay (Unlock Function)
RR FOG LPRear Fog Lamp (Export Only)
BRAKEAnti-Lock Brake System
DRIVER UNLCKPower Door Lock Relay (Driver’s Door Unlock Function)
IGN 0PCM, TCM
TBC IGN 0Truck Body Controller
VEH CHMSLVehicle and Trailer High Mounted Stoplamp
LT TRLR ST/TRNLeft Turn Signal / Stop Trailer
LT TRNLeft Turn Signals and Sidemarkers
VEH STOPVehicle Stoplamps, Brake Module, Electronic Throttle Control Module
RT TRLR ST/TRNRight Turn Signal / Stop Trailer
RT TRNRight Turn Signals and Sidemarkers
BODYHarness Connector
DDMDriver Door Module
AUX PWR 2, M/GATERear Cargo Area Power Outlets
LCKSPower Door Lock System
ECC, TPMRear Electronic Climate Control, Liftgate, Tire Pressure Monitoring System
TBC 2CTruck Body Controller
HAZRDFlasher Module
CB LT DRSLeft Power Window Circuit Breaker
TBC 2BTruck Body Controller
TBC 2ATruck Body Controller
Center Instrument Panel Fuse Block

GMC Yukon (GMT800)(2006): Instrument panel fuse box diagram

List of fuses in the Center Instrument Panel Fuse Block (2006)
DeviceUsage
SEOSpecial Equipment Option
TRAILERTrailer Brake Wiring
UPFITUpfitter (Not Used)
SL RIDERide Control Harness Connection
HDLR 2Headliner Wiring Connector
BODYBody Wiring Connector
DEFOGRear Defogger Relay
HDLNR 1Headliner Wiring Connector 1
SPARE RELAYNot Used
CB SEATDriver and Passenger Seat Module Circuit Breaker
CB RT DOORRight Power Window Circuit Breaker
SPARENot Used
INFOInfotainment Harness Connection
Underhood Fuse Block

GMC Yukon (GMT800)(2006): Under-hood compartment fuse box diagram

List of fuses in the Underhood Fuse Block (2006)
FusesUsage
GLOW PLUGNot Used
CUST FEEDGasoline Accessory Power
HYBRIDNot Used
STUD #1Auxiliary Power (Single Battery and Diesels Only) / Dual Battery (TP2) Do not install fuse.
MBECMid Bussed Electrical Center Power Feed, Front Seats, Right Doors
BLWRFront Climate Control Fan
LBECLeft Bussed Electrical Center, Door Modules, Door Locks, Auxiliary Power Outlet - Rear Cargo Area and Instrument Panel
STUD #2*Accessory Power / Trailer Wiring Brake Feed
ABSAnti-lock Brakes
VSES/ECASAutomatic Level Control (ALC) Compressor
IGN AIgnition Power
IGN BIgnition Power
LBEC 1Left Bussed Electrical Center, Left Doors, Truck Body Controller, Flasher Module
TRLPARKParking Lamps Trailer Wiring
RR PARKRight Rear Parking and Sidemarker Lamps
LR PARKLeft Rear Parking and Sidemarker Lamps
PARK LPParking Lamps Relay
STRTRStarter Relay
INTPARKInterior Lamps
STOP LPStoplamps
TBC BATTTruck Body Controller Battery Feed
SEO B2Off-Road Lamps
4WSNot Used
AUX PWRAuxiliary Power Outlet - Console
PCM 1Powertrain Control Module
ETC/ECMElectronic Throttle Control, Electronic Brake Controller
IGN EInstrument Panel Cluster, Air Conditioning Relay, Turn Signal/Hazard Switch, Starter Relay
RTDElectronic Suspension Control, Automatic Level Control (ALC) Exhaust
TRL B/UBackup Lamps Trailer Wiring
F/PMPFuel Pump (Relay)
B/U LPBack-up Lamps, Automatic Transmission Shift Lock Control System
RR DEFOGRear Window Defogger
HDLP-HIHeadlamp High Beam Relay
PRIMENot Used
AIRBAGSupplemental Inflatable Restraint System
FRT PARKFront Parking Lamps, Sidemarker Lamps
DRLDaytime Running Lamps (Relay)
SEO IGNRear Defog Relay
TBC IGN1Truck Body Controller Ignition
HI HDLP-LTDriver’s Side High Beam Headlamp
LH HIDNot Used
DRLDaytime Running Lamps
RVCRegulated Voltage Control
IPC/DICInstrument Panel Cluster / Driver Information Center
HVAC/ECASClimate Control Controller
CIG LTRCigarette Lighter
HI HDLP-RTPassenger’s Side High Beam Headlamp
HDLP-LOWHeadlamp Low Beam Relay
A/C COMPAir Conditioning Compressor Relay
A/C COMPAir Conditioning Compressor
TCMBTransmission Control Module
RR WPRRear Wiper/Washer
RADIOAudio System
SEO B1Mid Bussed Electrical Center, Universal Home Remote System, Rear Heated Seats
LO HDLP-LTDriver’s Side Headlamp Low Beam
BTSIBrake Transmission Shift Interlock System
CRNKStarting System
LO HDLP-RTPassenger’s Side Headlamp Low Beam
FOG LPFog Lamps Relay
FOG LPFog Lamps
HORNHorn Relay
W/S WASHWindshield and Rear Window Washer Pump Relay
W/S WASHWindshield and Rear Window Washer Pump
INFOOnStar / Rear Seat Entertainment
RADIO AMPRadio Amplifier
RH HIDNot Used
HORNHorn
EAPElectric Adjustable Pedals
TRECAll-Wheel Drive Module (If Equipped)
SBASupplemental Brake Assist
1*Gasoline Engine and Fuel Injection Rail #2
2*Gasoline Engine and Fuel Injection Rail #1
3*Gasoline Engine; Oxygen Sensors
4*Gasoline Engine; Oxygen Sensors
5*Ignition 1
6*Powertrain Control Module, Fuel Pump
7*Rear Climate Control
8*Sunroof