Jonathan Yarden Mar 25, 2021 · 5 min. read
In this article you will find a description of fuses and relays GMC,
with photos of block diagrams and their locations.
Highlighted the cigarette lighter fuse (as the most popular thing people look for).
Get tips on blown fuses, replacing a fuse, and more.
Year of production: 2007
Instrument Panel Fuse Block
The fuse block access door is on the driverās side edge of the instrument panel.
Ā
| Name | Usage |
| LT DR | Driverās Door Harness Connection |
| LT DR | Driverās Side Power Window Circuit Breaker |
| REAR SEAT | Rear Seats |
| AUX PWR2 | Rear Cargo Area Power Outlets |
| SWC BKLT | Steering Wheel Controls Backlight |
| DDM | Driver Door Module |
| CTSY | Dome Lamps, Driverās Side Turn Signal |
| LT STOP TRN | Driverās Side Turn Signal, Stoplamp |
| DIM | Instrument Panel Back Lighting |
| RT STOP TRN | Passengerās Side Turn Signal, Stoplamp |
| BCM | Body Control Module |
| UNLCK2 | Power Door Lock 2 (Unlock Feature) |
| LCK2 | Power Door Lock 2 (Lock Feature) |
| STOP LAMPS | Stoplamps, Center-High Mounted Stoplamp |
| REAR HVAC | Rear Climate Controls |
| PDM | Passenger Door Module, Universal Home Remote System |
| AUX PWR | Accessory Power Outlets |
| IS LPS | Interior Lamps |
| UNLCK1 | Power Door Lock 1 (Unlock Feature) |
| OBS DET | Ultrasonic Rear Parking Assist, Power Liftgate |
| LCK1 | Power Door Lock 1 (Lock Feature) |
| REAR WPR | Rear Wiper |
| COOLED SEATS | Not Used |
| DSM | Driver Seat Module, Remote Keyless Entry System |
| BODY | Harness Connector |
| BODY | Harness Connector |
Center Instrument Panel Fuse Block
The center instrument panel utility block is locatedĀ underneath the instrument panel, to the left of theĀ steering column.
| Fuses | Usage |
| BODY 2 | Body Harness Connector 2 |
| BODY 1 | Body Harness Connector 1 |
| BODY 3 | Body Harness Connector 3 |
| HEADLINER 3 | Headliner Harness Connector 3 |
| HEADLINER 2 | Headliner Harness Connector 2 |
| HEADLINER 1 | Headliner Harness Connector 1 |
| BRAKE CLUTCH | Brake Clutch Harness Connector |
| SEO/UPFITTER | Special Equipment Option Upfitter Harness Connector |
Ā
| Circuit Breaker | Usage |
| CB1 | Passengerās Side Power Window Circuit Breaker |
| CB2 | Passengerās Seat Circuit Breaker |
| CB3 | Driverās Seat Circuit Breaker |
| CB4 | Not Used |
Underhood Fuse block
The underhood fuse/relay center is located in the rear of the engine compartment near the brake fluid reservoir.
Ā
| Fuses | Usage |
| 1 | Not Used |
| 2 | Electronic Stability Suspension Control, Automatic Level Control Exhaust |
| 3 | Left Trailer Stop/Turn Lamp |
| 4 | Engine Controls |
| 5 | Engine Control Module, Throttle Contro |
| 6 | Right Trailer Stop/Turn Lamp |
| 7 | Front Washer |
| 8 | Oxygen Sensors |
| 9 | Anti-lock Brakes System 2 |
| 10 | Trailer Back-up Lamps |
| 11 | Driverās Side Low-Beam Headlamp |
| 12 | Engine Control Module (Battery) |
| 13 | Fuel Injectors, Ignition Coils (Right Side) |
| 14 | Transmission Control Module (Battery) |
| 15 | Vehicle Back-up Lamps |
| 16 | Passengerās Side Low-Beam Headlamp |
| 17 | Air Conditioning Compressor |
| 18 | Oxygen Sensors |
| 19 | Transmission Controls (Ignition) |
| 20 | Fuel Pump |
| 21 | Not Used |
| 22 | Rear Washer |
| 23 | Fuel Injectors, Ignition Coils (Left Side |
| 24 | Trailer Park Lamps |
| 25 | Driverās Side Park Lamps |
| 26 | Passengerās Side Park Lamps |
| 27 | Fog Lamps |
| 28 | Horn |
| 29 | Passengerās Side High-Beam Headlamp |
| 30 | Daytime Running Lamps |
| 31 | Driverās Side High-Beam Headlamp |
| 32 | Daylight Running Lamps 2 |
| 33 | Sunroof |
| 34 | Key Ignition System, Theft Deterrent System |
| 35 | Windshield Wiper |
| 36 | SEO B2 Upfitter Usage (Battery) |
| 37 | Electric Adjustable Pedals |
| 38 | Climate Controls (Battery) |
| 39 | Airbag System (Ignition) |
| 40 | Amplifier |
| 41 | Audio System |
| 42 | Four-Wheel Drive |
| 43 | Miscellaneous (Ignition), Rear Vision Camera, Cruise Control |
| 44 | Liftgate Release |
| 45 | OnStarĀ®, Rear Seat Entertainment Display |
| 46 | Instrument Panel Cluster |
| 47 | Not Used |
| 48 | Not Used |
| 49 | Auxiliary Climate Control (Ignition), Compass-Temperature Mirror |
| 50 | Rear Defogger |
| 51 | Airbag System (Battery) |
| 52 | SEO B1 Upfitter Usage (Battery) |
| 53 | Cigarette Lighter, Auxiliary Power Outlet |
| 54 | Automatic Level Control Compressor Relay, SEO Upfitter Usage |
| 55 | Climate Controls (Ignition) |
| 56 | Engine Control Module, Secondary Fuel Pump (Ignition) |
Ā
| J-Case Fuses | Usage |
| 60 | Cooling Fan 1 |
| 61 | Automatic Level Control Compressor |
| 62 | Heavy Duty Anti-lock Brake System |
| 63 | Cooling Fan 2 |
| 64 | Anti-lock Brake System 1 |
| 65 | Starter |
| 66 | Stud 2 (Trailer Brakes) |
| 67 | Left Bussed Electrical Center 1 |
| 68 | Electric Running Boards |
| 69 | Heated Windshield Washer System |
| 70 | Four-Wheel Drive System |
| 71 | Stud 1 (Trailer Connector Battery Power) |
| 72 | Mid-Bussed Electrical Center 1 |
| 73 | Climate Control Blower |
| 74 | Power Liftgate Module |
| 75 | Left Bussed Electrical Center 2 |
| Relays | Usage |
| FAN HI | Cooling Fan High Speed |
| FAN LO | Cooling Fan Low Speed |
| ENG EXH VLV | Not Used |
| FAN CNTRL | Cooling Fan Control |
| HDLP LO/HID | Low-Beam Headlamp |
| FOG LAMP | Front Fog Lamps |
| A/C CMPRSR | Air Conditioning Compressor |
| STRTR | Starte |
| PWR/TRN | Powertrain |
| FUEL PMP | Fuel Pump |
| PRK LAMP | Parking Lamps |
| REAR DEFOG | Rear Defogge |
| RUN/CRANK | Switched Power |
WARNING:Ā Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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