Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2004 Hummer H2 4D Utility PickupFACTORY OEM SERVICE PROCEDURE
Electrical Component Locator: Miscellaneous
MISCELLANEOUS LOCATION
| Component | Location |
|---|---|
| Accessory Power Outlet-LR (Console) | At rear of center console. See Figure . |
| Accessory Power Outlet-RR (Console) | At rear of center console. See Figure . |
| Accessory Power Outlet-RR (Rear Cargo Storage Bin) | At rear of rear cargo storage bin. See Figure . |
| Accessory Power Outlet (2) | At center of dash. See Figure . |
| Audio Amplifier | Under front floor console, between front seats. See Figure . |
| Battery | At left side of engine compartment. See Figure . |
| Cell Phone/GPS Antenna | At left front of roof. See Figure . |
| Cellular & Navigation Antenna | At top left front of roof. See Figure . |
| Cellular Telephone Microphone | In left roof rail, forward of "B" pillar. See Figure . |
| Data Link Connector (DLC) | Under left side of dash, below steering column. See Figure . |
| Electric Locking Differential Case Assembly | Integral to lock differential. See Figure . |
| Generator | At top left of engine. See Figure . |
| Global Positioning System (GPS) Antenna (I/P) | On dash. See Figure . |
| Heated Seat Element Connector-LR | Under left side of 2nd row seat. See Figure . |
| Heated Seat Element Connector-RR | Under right side of 2nd row seat. See Figure . |
| Heated Seat Element-Driver Cushion | In driver seat. See Figure . |
| Heated Seat Element-Driver Cushion Connector | In driver seat. See Figure . |
| Heated Seat Element-Passenger Cushion Connector (W/KA7) | Under front passenger seat. See Figure . |
| Horn Connector-High Note | At horn. See Figure . |
| Horn-High Note | On left lower corner of radiator core support. See Figure . |
| Horn-Low Note | On right lower corner of radiator core support. See Figure . |
| Ignition Coil 1 | At left side of engine. See Figure . |
| Ignition Coil 2 | At right side of engine. See Figure . |
| Ignition Coil 3 | At left side of engine. See Figure . |
| Ignition Coil 4 | At right side of engine. See Figure . |
| Ignition Coil 5 | At left side of engine. See Figure . |
| Ignition Coil 6 | At right side of engine. See Figure . |
| Ignition Coil 7 | At left side of engine. See Figure . |
| Ignition Coil 8 | At right side of engine. See Figure . |
| Junction Block - Battery Cable | At left side of engine. See Figure . |
| Locking Differential Coil Assembly | Integral to lock differential. See Figure . |
| Longnitudinal Accelerometer | Behind center of dash. See Figure . |
| Navigation Radio Antenna (UM8) | Behind right side of dash. See Figure . |
| Noise Cancellation Microphone | Mounted inside overhead console. See Figure . |
| Parking Brake Assembly | Under left side of dash. See Figure . |
| Radio Antenna | At right front of vehicle. See Figure . |
| RCDLR (Part Of The Front Passenger Door Module) | In front passenger door module. See Figure . |
| SIR Coil | At top of steering column. See Figure . |
| Starter | At right rear of engine. See Figure . |
| Stud #1 | On underhood fuse block. See Figure . |
| Stud #2-Trailer Connector Power Feed | On underhood fuse block. See Figure . |
| Theft Deterrent Control Module Electric Park Lock | In steering column. See Figure . |
| Trailer Receptacle | At rear bumper fascia. See Figure . |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.