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 P349C
This Preliminary information communicates During inspection of the vehicle for an unrelated concern the technician may notice that one or more of the following Cylinder Deactivation Performance DTC(s) P3498, P3499,…
CADILLAC, CHEVROLET, GMC
Reported code forms P349C
This Preliminary information communicates During inspection of the vehicle for an unrelated concern the technician may notice that one or more of the following Cylinder Deactivation Performance DTC(s) P3498, P3499,…
CHEVROLET, GMC
Reported code forms P349C
This Preliminary information communicatesThe vehicle may come into a dealer with a check engine lamp with any of the followingDTC P3498 Cylinder 1 Deactivation Performance DTC P3499 Cylinder 2 Deactivation Performance…
Check vehicle applicability
6A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Cadillac | ESCALADE NA | 2021 |
| Chevrolet | SILVERADO 1500 | 2019 |
| Chevrolet | SUBURBAN | 2021 |
| Chevrolet | TAHOE | 2021 |
| GMC | SIERRA 1500 | 2019 |
| GMC | YUKON | 2021 |
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.