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
CADILLAC, CHEVROLET, GMC
Reported code forms C159C
This Preliminary information communicates that when they connect a trailer to the truck that there is a Service Trailer Brake message displayed in the DIC. When checking for DTC's a C159C sym49 maybe set for the Trailer…
CADILLAC, CHEVROLET, GMC
Reported code forms C159C
This Preliminary information communicates that when they connect a trailer to the truck that there is a Service Trailer Brake message displayed in the DIC. When checking for DTC's a C159C sym49 maybe set for the Trailer…
CADILLAC, CHEVROLET, GMC
Reported code forms C159C
This Preliminary information communicates that when they connect a trailer to the truck that there is a Service Trailer Brake message displayed in the DIC. When checking for DTC's a C159C sym49 maybe set for the Trailer…
Check vehicle applicability
9A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Cadillac | ESCALADE ESV | 2022 |
| Chevrolet | SILVERADO 1500 | 2023 |
| Chevrolet | SILVERADO 1500 | 2022 |
| Chevrolet | SUBURBAN | 2022 |
| Chevrolet | TAHOE | 2023 |
| Chevrolet | TAHOE | 2022 |
| GMC | SIERRA 1500 | 2023 |
| GMC | SIERRA 1500 | 2022 |
| GMC | YUKON XL | 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.