The underhood fuse block in the engine compartment on the driver's side of the vehicle near the battery. Lift the cover for access to the fuse/relay block.
To remove fuses hold the end of the fuse between your thumb and index finger and pull straight out.
See Engine Compartment Overview for more information on its location.
1* Fuel Injection Rail #2-Gasoline Engine; Engine Control Module-Diesel Engine.
2* Fuel Injection Rail #1-Gasoline Engine; Actuator-Diesel Engine.
3* Oxygen Sensors-Gasoline Engine; Fuel Heater-Diesel Engine.
4* Oxygen Sensors-Gasoline Engine; Engine Control Module 1-Diesel Engine.
5* Ignition 1-Gasoline Engine; Engine Control Module-Diesel Engine.
6* Powertrain Control Module B-Gasoline Engine; Engine Control Module B-Diesel Engine.
7* Supplemental Brake Assist - Gasoline Engine; Electronic Viscous Fan - Diesel Engine.
8* Rear Climate Control.
9* Sunroof.
Fuses | Usage |
|---|---|
GLOW PLUG | Diesel Glow Plugs and Intake Air Heater |
CUST FEED | Gasoline Accessory Power |
HYBRID | Hybrid |
STUD #1 | Auxiliary Power (Single Battery and Diesels Only)/ Dual Battery (TP2) Do not install fuse. |
MBEC | Mid Bussed Electrical Center Power Feed, Front Seats, Right Doors |
BLWR | Front Climate Control Fan |
LBEC | Left Bussed Electrical Center, Door Modules, Door Locks, Auxiliary Power Outlet--Rear Cargo Area and Instrument Panel |
STUD #2* | Accessory Power/Trailer Wiring Brake Feed |
ABS | Anti-lock Brakes |
VSES/ECAS | Vehicle Stability |
IGN A | Ignition Power |
IGN B | Ignition Power |
LBEC 1 | Left Bussed Electrical Center, Left Doors, Truck Body Controller, Flasher Module |
TRL PARK | Parking Lamps Trailer Wiring |
RR PARK | Right Rear Parking and Sidemarker Lamps |
LR PARK | Left Rear Parking and Sidemarker Lamps |
PARK LP | Parking Lamps Relay |
STRTR | Starter Relay |
INTPARK | Interior Lamps |
STOP LP | Stoplamps |
TBC BATT | Truck Body Controller Battery Feed |
SEO B2 | Off-Road Lamps |
4WS | Not Used |
AUX PWR | Auxiliary Power Outlet -- Console |
PCM 1 | Powertrain Control Module |
ETC/ECM | Electronic Throttle Control, Electronic Brake Controller-Gasoline Engine, Fan Clutch-Diesel Engines |
IGN E | Instrument Panel Cluster, Air Conditioning Relay, Turn Signal/Hazard Switch, Starter Relay |
RTD | Ride Control |
TRL B/U | Backup Lamps Trailer Wiring |
F/PMP | Fuel Pump (Relay) |
B/U LP | Back-up Lamps, Automatic Transmission Shift Lock Control System |
RR DEFOG | Rear Window Defogger |
HDLP-HI | Headlamp High Beam Relay |
PRIME | Not Used |
AIRBAG | Supplemental Inflatable Restraint System |
FRT PARK | Front Parking Lamps, Sidemarker Lamps |
DRL | Daytime Running Lamps (Relay) |
SEO IGN | Rear Defog Relay |
TBC IGN1 | Truck Body Controller Ignition |
HI HDLP-LT | High Beam Headlamp-Left |
LH HID | Not Used |
DRL | Daytime Running Lamps |
RVC | Regulated Voltage Control |
IPC/DIC | Instrument Panel Cluster/Driver Information Center |
HVAC/ECAS | Climate Control Controller |
CIG LTR | Cigarette Lighter |
HI HDLP-RT | High Beam Headlamp-Right |
HDLP-LOW | Headlamp Low Beam Relay |
A/C COMP | Air Conditioning Compressor Relay |
A/C COMP | Air Conditioning Compressor |
TCMB | Transmission Control Module |
RR WPR | Not Used |
RADIO | Audio System |
SEO B1 | Mid Bussed Electrical Center, Rear Heated Seats, Universal Home Remote System |
LO HDLP-LT | Headlamp Low Beam-Left |
BTSI | Brake Transmission Shift Interlock System |
CRNK | Starting System |
LO HDLP-RT | Headlamp Low Beam-Right |
FOG LP | Fog Lamps Relay |
FOG LP | Fog Lamps |
HORN | Horn Relay |
W/S WASH | Windshield Washer Pump Relay |
W/S WASH | Windshield Washer Pump |
INFO | OnStar®/Rear Seat Entertainment |
RADIO AMP | Radio Amplifier |
RH HID | Not Used |
HORN | Horn |
EAP | Not Used |
TREC | Not Used |
Auxiliary Electric Cooling Fan Fuse Block
The auxiliary electric cooling fan fuse block is located in the engine compartment on the driver's side of the vehicle next to the underhood fuse block.
Lift the cover for access to the fuse/relay block.
Fuses | Usage |
|---|---|
COOL/FAN | Cooling Fan |
COOL/FAN | Cooling Fan Relay Fuse |
COOL/FAN | Cooling Fan Fuse |
Relays | Usage |
|---|---|
COOL/FAN 1 | Cooling Fan Relay 1 |
COOL/FAN 3 | Cooling Fan Relay 3 |
COOL/FAN 2 | Cooling Fan Relay 2 |
