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
Instrument Panel DTCS
INSTRUMENT PANEL DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B0540 | Speedometer Circuit |
| DTC B0560 | Tachometer Circuit Range/Performance |
| DTC B1372 | Device Ignition 1 (ON and START) Circuit Low |
| DTC B2961 | Key In Ignition Circuit Malfunction |
| DTC P0461 | Fuel Level Sensor Performance |
| DTC P0462 | Fuel Level Sensor Circuit Low Voltage |
| DTC P0463 | Fuel Level Sensor Circuit High Voltage |
| DTC P0522 | Engine Oil Pressure (EOP) Switch Circuit Low Voltage |
| DTC P0523 | Engine Oil Pressure (EOP) Switch Circuit High Voltage |
| DTC P0608 | Vehicle Speed Output Circuit |
| DTC P0654 | Engine Speed Output Circuit |
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.