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
1Original wording in English
CADILLAC, CHEVROLET, GMC
Reported code forms P16BC
This Preliminary information communicates Some customers may comment that the SES lamp is illuminated or was Illuminated and turned off. During inspection Technician may notice DTC P1682 (Ignition 1 Switch Circuit 2)…
Check vehicle applicability
15A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Cadillac | ESCALADE | 2020 |
| Cadillac | ESCALADE | 2019 |
| Chevrolet | SILVERADO 2500 | 2020 |
| Chevrolet | SILVERADO 2500 | 2019 |
| Chevrolet | SILVERADO 4500 | 2020 |
| Chevrolet | SILVERADO 4500 | 2019 |
| Chevrolet | SUBURBAN | 2020 |
| Chevrolet | SUBURBAN | 2019 |
| Chevrolet | TAHOE | 2020 |
| Chevrolet | TAHOE | 2019 |
| GMC | SIERRA 2500 | 2020 |
| GMC | SIERRA 2500 | 2019 |
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.