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
7Original wording in English
CHEVROLET, GMC
Reported code forms P11D5
This technical bulletin provides repair information to correct a customer concern of Service Engine Soon Lamp being illuminated. They may also comment on multiple transmission issues including harsh or delayed shifts,…
CHEVROLET, GMC
Reported code forms P11D5
This technical bulletin provides repair information to correct a customer concern of Service Engine Soon Lamp being illuminated with DTCs P2002, P2463, P2459, P144E, P0421, P0422, P0106 P20EE, P129F, P16F3, P20FF,…
CHEVROLET, GMC
Reported code forms P11D5
This technical bulletin provides repair information to correct a customer concern of Service Engine Soon Lamp being illuminated. They may also comment on multiple transmission issues including harsh or delayed shifts,…
CHEVROLET, GMC
Reported code forms P11D5
This technical bulletin provides repair information to correct a customer concern of MIL Illuminated- ECM Update for P026C, P20EE, or P11D5.
CHEVROLET, GMC
Reported code forms P11D5
Service Update Bulletin. The affected vehicles may incorrectly present the MIL/Service Engine Soon Light being illuminated and technicians may find DTC P11D5. Dealers are to reprogram the engine control module. This…
CHEVROLET, GMC
Reported code forms P11D5
This Preliminary information communicates to the dealer technician to check for any new ECM calibration updates for DTCs P129F P16F3 P20EE P20FF P226D P249D P249E P11CC and / or P11D5 set.
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 |
|---|---|---|
| Chevrolet | SILVERADO 2500 | 2021 |
| Chevrolet | SILVERADO 2500 | 2020 |
| Chevrolet | SILVERADO 3500 | 2021 |
| Chevrolet | SILVERADO 3500 | 2020 |
| GMC | SIERRA | Year not specified |
| GMC | SIERRA 1500 | 2021 |
| GMC | SIERRA 2500 | 2021 |
| GMC | SIERRA 2500 | 2020 |
| GMC | SIERRA 3500 | 2020 |
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.