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
12Original wording in English
CADILLAC, CHEVROLET, GMC
Reported code forms B1A7A
This Preliminary information communicates an issue with: Overhead Console Inoperative / Service Safety Restraints Message / Sunroof Inoperative / DTC's B1A7A and U1121. Dealers are to cycle the power to the overhead…
CADILLAC, CHEVROLET, GMC
Reported code forms B1A7A
This Preliminary information communicates an issue during start up that the following symptoms occur: - Service Safety Restraints System Message - Sunroof Inoperative - Sunshade Lights Inoperative - Dome Lights…
CADILLAC, CHEVROLET, GMC
Reported code forms B1A7A
This Preliminary information communicates an issue during start up that the following symptoms occur: - Service Safety Restraints System Message - Sunroof Inoperative - Sunshade Lights Inoperative - Dome Lights…
CADILLAC, CHEVROLET, GMC
Reported code forms B1A7A
This Preliminary information communicates an issue during start up that the following symptoms occur: - Service Safety Restraints System Message - Sunroof Inoperative - Sunshade Lights Inoperative - Dome Lights…
CADILLAC, CHEVROLET, GMC
Reported code forms B1A7A
This Preliminary information communicates an issue during start up that the following symptoms occur: - Service Safety Restraints System Message - Sunroof Inoperative - Sunshade Lights Inoperative - Dome Lights…
BUICK
Reported code forms B1A7A
This technical bulletin provides repair information to correct a customer concern of Service Safety Restraint System Message with DTC B1A7A Set.
Check vehicle applicability
14A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Buick | ENVISION | 2022 |
| Cadillac | ESCALADE ESV | 2023 |
| Cadillac | ESCALADE ESV | 2022 |
| Cadillac | ESCALADE ESV | 2021 |
| Chevrolet | SUBURBAN | 2023 |
| Chevrolet | SUBURBAN | 2022 |
| Chevrolet | SUBURBAN | 2021 |
| Chevrolet | TAHOE | 2023 |
| Chevrolet | TAHOE | 2022 |
| Chevrolet | TAHOE | 2021 |
| GMC | YUKON | 2023 |
| GMC | YUKON XL | 2023 |
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.