What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer communications
3Original wording in English
GMC
Reported code forms P0494
This Preliminary information communicates to the field that water hitting the cooling fans can set a false DTC: P0494 for the 2022-2024 HUMMER EV.
GMC
Reported code forms P0494
This Preliminary information communicates to the field that water hitting the cooling fans can set a false DTC: P0494 for the 2022-2023 HUMMER EV.
GMC
Reported code forms P0494
This Preliminary information communicates to the field that water hitting the cooling fans can set a false DTC: P0494 for the new 2022 HUMMER EV.
Check vehicle applicability
2A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| GMC | HUMMER EV PICKUP | 2023 |
| GMC | HUMMER EV PICKUP | 2022 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.