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
1Original wording in English
CADILLAC, CHEVROLET, GMC
Reported code forms B1C89
This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the hood will not latch, open and/or gets stuck, hood ajar…
Check vehicle applicability
10A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Cadillac | ESCALADE IQ | 2025 |
| Chevrolet | SILVERADO EV | 2025 |
| Chevrolet | SILVERADO EV | 2024 |
| GMC | HUMMER EV PICKUP | 2025 |
| GMC | HUMMER EV PICKUP | 2024 |
| GMC | HUMMER EV PICKUP | 2023 |
| GMC | HUMMER EV PICKUP | 2022 |
| GMC | HUMMER EV SUV | 2025 |
| GMC | SIERRA EV | 2025 |
| GMC | SIERRA EV | 2024 |
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.