Hummer H3 (2010) – fuse box diagram
Year of production: 2010
Engine Compartment Fuse Block
The engine compartment fuse block is located on the driver’s side of the engine compartment.
| Fuses | Usage |
| 1 | Heated Seats |
| 2 | Grille Guard |
| 3 | Stop Lamp (H3T Only) |
| 4 | Roof Rack Lamps |
| 5 | Battery Ignition Switch |
| 6 | Front Wiper |
| 7 | Regulated Voltage Control Power |
| 8 | Power Locks |
| 9 | Sunroof, Front Washer Pump |
| 10 | Accessories (SPO) |
| 11 | Not Used |
| 12 | Transfer Case Control Module |
| 13 | Radio |
| 14 | Body Control Module |
| 15 | Rear Wiper Motor (H3 Only) |
| 16 | Rear Wiper Pump Switch (H3 Only) |
| 17 | Air Injection Reactor (AIR) Pump Relay/ Transmission Control Module (TCM) (V8 Only) |
| 18 | Rear Vision Camera |
| 19 | Cluster |
| 20 | Rear Turn Lamp, Hazard Lamp |
| 21 | Powertrain Control Module 1 |
| 22 | Mass Air Flow Sensor, Purge Solenoid |
| 23 | Injector/V8 Coil |
| 24 | Fog Lamp |
| 25 | Powertrain Control Module B |
| 26 | Transmission Control Module (TCM) |
| 27 | Airbags |
| 28 | Not Used |
| 29 | Anti-lock Brakes, StabiliTrak® |
| 30 | Rear Window Defogger |
| 31 | Canister Vent |
| 32 | Regulated Voltage Control Sensor |
| 33 | Ignition 1 |
| 34 | Transmission |
| 35 | Cruise Control, Miscellaneous |
| 36 | Horn |
| 37 | Driver’s Side Rear Park Lamp |
| 38 | Amplifier |
| 39 | Daytime Running Lamps |
| 40 | Passenger’s Side Headlamp |
| 41 | Driver’s Side Headlamp |
| 42 | Trailer Back-Up Lamp |
| 43 | Front Park Lamps |
| 44 | Air Injection Reactor (AIR) Solenoid |
| 45 | Auxiliary Power 2/ Cigarette Lighter |
| 46 | Electronic Throttle Control |
| 47 | Oxygen Sensor |
| 48 | Air Conditioning Clutch |
| 49 | Rear Park Lamp |
| 50 | Stop Lamp |
| 51 | Auxiliary Power 1/ Cigarette Lighter |
| 52 | StabiliTrak®, Antilock Brake System |
| 53 | Power Heated Seat, Belt Switch |
| 54 | Fuel System Control Module (FSCM) |
| 55 | Trailer Parking Lamps |
| 56 | Front Turn Signal, Hazard Signal, Courtesy Mirror |
| 57 | Power Sunroof |
| 58 | Transfer Case Control Module Switch |
| 59 | Climate Control |
| 60 | Back‐Up Lamp |
| 61 | Power Seats |
| 62 | Air Injection Reactor (AIR) Pump |
| 63 | Passenger’s Side Power Window |
| 64 | Anti-lock Brakes, StabiliTrak® 2 Solenoid |
| 67 | Anti-lock Brakes, StabiliTrak® 1 Motor |
| 68 | Driver’s Side Power Window |
| 82 | Climate Control Fan |
| 83 | Electronic Brake Controller |
| 84 | Trailer B+ Fuse |
| 85 | Starter |
| 91 | Generator Megafuse |
| Relay | Usage |
| 66 | Stop Lamp (H3T Only) |
| 69 | Fog Lamp |
| 70 | High, Low Beam Headlamps |
| 71 | Rear Defogger |
| 72 | Windshield Wiper On/Off |
| 73 | Windshield Wiper High/Low |
| 74 | Horn |
| 75 | Headlamp |
| 76 | Air Conditioning Clutch |
| 77 | Powertrain Control Module (starter) |
| 78 | Run, Crank |
| 79 | Daytime Running Lamps |
| 80 | Air Injection Reactor (AIR) Solenoid |
| 81 | Powertrain |
| 86 | Back-up |
| 87 | Ignition 3 (Heating, Ventilation, Air Conditioning) |
| 88 | Retained Accessory Power/Accessory |
| 89 | Park Lamp |
| Diode | Usage |
| 65 | Wiper Diode |
| 90 | Air Conditioning Clutch Diode |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.