Reference meaning
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.
Narrow by vehicle
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
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.
Scan worksheet →Manufacturer communications
3Original wording in English
CHEVROLET
This Preliminary information instructs the dealer to update the ECM to correct dtc P2959.
CHEVROLET
This technical bulletin provides repair information to correct a customer concern of Medium Duty L5D Trucks Setting DTC P2959.
CHEVROLET, GMC
This Preliminary information communicates to the dealer technician that DTC P2959 is under investigation.
Check vehicle applicability
7A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Chevrolet | SILVERADO 2500 ↗ | 2024 |
| Chevrolet | SILVERADO 3500 ↗ | 2024 |
| Chevrolet | SILVERADO 4500 ↗ | 2024 |
| Chevrolet | SILVERADO 5500 ↗ | 2024 |
| Chevrolet | SILVERADO 6500 ↗ | 2025 |
| GMC | SIERRA 2500 ↗ | 2024 |
| GMC | SIERRA 3500 ↗ | 2024 |
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.