Jonathan Yarden Oct 06, 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, 2008, 2009
Engine Compartment Fuse Block
The fuse block is located under the hood in the engine compartment on the driver’s side of the vehicle.
L6 Engine
Fuses | Usage |
1 | Electrically-Controlled Air Suspension |
2 | Passenger’s Side High-Beam Headlamp |
3 | Passenger’s Side Low-Beam Headlamp |
4 | Back-Up-Trailer Lamps |
5 | Driver’s Side High-Beam Headlamp |
6 | Driver’s Side Low-Beam Headlamp |
7 | Windshield Wiper |
8 | Active Transfer Case |
9 | Windshield Wipers |
10 | Powertrain Control Module B |
11 | Fog Lamps |
12 | StopLamp |
13 | Cigarette Lighter |
15 | Electric Adjustable Pedals |
16 | Truck Body Controller, Ignition 1 |
17 | Crank |
18 | AirBag |
19 | Trailer Electric Brake |
20 | Cooling Fan |
21 | Horn |
22 | Ignition E |
23 | Electronic Throttle Control |
24 | Instrument Panel Cluster, Driver Information Center |
25 | Automatic Shift Lock Control System |
26 | Transmission Control Module Canister |
27 | Backup |
28 | Powertrain Control Module 1 |
29 | Oxygen Sensor |
30 | Air Conditioning |
31 | Truck Body Controller |
32 | Trailer |
33 | Anti-Lock Brakes (ABS) |
34 | Ignition A |
35 | Blower Motor |
36 | Blower |
50 | Passenger’s Side Trailer Turn |
51 | Driver’s Side Trailer Turn |
52 | Hazard Flashers |
53 | Headlamp Driver Module |
54 | Air Injection Reactor (AIR) Solenoid |
56 | Air Injection Reactor (AIR) Pump |
58 | Vehicle Stability Enhancement System (StabiliTrak®) |
59 | Regulated Voltage Control |
Relays | Usage |
37 | Headlamp Washer |
38 | Rear Window Washer |
39 | Fog lamps |
40 | Horn |
41 | Fuel Pump |
42 | Windshield Washer |
43 | High-Beam Headlamp |
44 | Air Conditioning |
45 | Cooling Fan |
46 | Headlamp Driver Module |
47 | Starter |
49 | Electric Adjustable Pedal |
55 | Air Injection Reactor (AIR) Solenoid |
57 | Powertrain |
Miscellaneous | Usage |
48 | Instrument Panel Battery |
V8 Engine
Fuses | Usage |
1 | Electrically-Controlled Air Suspension |
2 | Passenger’s Side High-Beam Headlamp |
3 | Passenger’s Side Low-Beam Headlamp |
4 | Back-Up-Trailer Lamps |
5 | Driver’s Side High-Beam Headlamp |
6 | Driver’s Side Low-Beam Headlamp |
7 | Windshield Wiper |
8 | Automatic Transfer Case |
9 | Windshield Wipers |
10 | Powertrain Control Module B |
11 | Fog Lamps |
12 | Stoplamp |
13 | Cigarette Lighter |
14 | Ignition Coils |
15 | Transmission Control Module (TCM) Canister Vent |
16 | Truck Body Controller, Ignition 1 |
17 | Crank |
18 | Airbag |
19 | Trailer Electric Brake |
20 | Cooling Fan |
21 | Horn |
22 | Ignition E |
23 | Electronic Throttle Control |
24 | Instrument Panel Cluster, Driver Information Center |
25 | Automatic Shift Lock Control System |
26 | Engine 1 |
27 | Backup |
28 | Powertrain Control Module 1 |
29 | Powertrain Control Module |
30 | Air Conditioning |
31 | Injector Bank A |
32 | Trailer |
33 | Anti-Lock Brakes (ABS) |
34 | Ignition A |
35 | Blower Motor |
36 | Ignition B |
50 | Passenger’s Side Trailer Turn |
51 | Driver’s Side Trailer Turn |
52 | Hazard Flashers |
53 | Transmission |
54 | Oxygen Sensor Bank B |
55 | Oxygen Sensor Bank A |
56 | Injector Bank B |
57 | Headlamp Driver Module |
58 | Truck Body Controller 1 |
59 | Electric Adjustable Pedal |
61 | Vehicle Stability Enhancement System (StabiliTrak®) |
62 | Regulated Voltage Control |
Relays | Usage |
37 | Headlamp Washer |
38 | Rear Window Wiper/Washer |
39 | Fog Lamps |
40 | Horn |
41 | Fuel Pump |
42 | Windshield Washer |
43 | High-Beam Headlamp |
44 | Air Conditioning |
45 | Cooling Fan |
46 | Headlamp Driver Module |
47 | Starter |
49 | Electric Adjustable Pedal |
60 | Powertrain |
Miscellaneous | Usage |
48 | Instrument Panel Battery |
Rear Underseat Fuse Block
Fuses | Usage |
01 | Right Door Control Module |
02 | Left Door Control Module |
03 | Liftgate Module 2 |
04 | Truck Body Controller 3 |
05 | Rear Fog Lamps |
06 | Blank |
07 | Truck Body Controller 2 |
08 | Power Seats |
09 | Rear Wiper |
10 | Driver Door Module |
11 | Amplifier |
12 | Passenger Door Module |
13 | Rear Climate Controls |
14 | Driver Side Rear Parking Lamps |
15 | Blank |
16 | Vehicle Center High-Mounted Stoplamp (CHMSL) |
17 | Passenger Side Rear Parking Lamps |
18 | Locks |
19 | Liftgate Module/Driver Seat Module |
20 | Blank |
21 | Lock |
23 | Blank |
24 | Unlock |
25 | Blank |
26 | Blank |
27 | OnStar® Overhead Battery/OnStar® System |
28 | Sunroof |
29 | Not Used |
30 | Parking Lamps |
31 | Truck Body Controller Accessory |
32 | Truck Body Controller 5 |
33 | Front Wipers |
34 | Vehicle Stop |
35 | Transmission Control Module |
36 | Heat Ventilation Air Conditioning B |
37 | Front Parking Lamps |
38 | Driver Side Turn Signal |
39 | Heat Ventilation Air Conditioning 1 |
40 | Truck Body Controller 4 |
41 | Radio |
42 | Trailer Park |
43 | Passenger Side Turn Signal |
44 | Heat Ventilation Air Conditioning |
45 | Rear Fog Lamps |
46 | Auxiliary Power 1 |
47 | Ignition 0 |
48 | Four-Wheel Drive |
49 | Blank |
50 | Truck Body Controller Ignition |
51 | Brakes |
52 | Truck Body Controller Run |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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