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
2Original wording in English
CHEVROLET, GMC
Reported code forms C1118
This Preliminary Information communication provides information to the technician for a service trailer brake message on in the vehicle. The technician will find diagnostic trouble codes C1115, C1116, C1117, or C1118.…
CHEVROLET, GMC
Reported code forms C1118
CHEVROLET/GMC: SERVICE TRAILER BRAKE MESSAGE WITH DTC(S) C1115, C1116, C1117, AND/OR C1118 (INSPECT WIRING NEAR PARKING BRAKE PEDAL). THIS CONCERN MAY BE VERY INTERMITTENT AND CAN OCCUR WITH OR WITHOUT A TRAILER…
Check vehicle applicability
32A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Chevrolet | AVALANCHE | 2010 |
| Chevrolet | AVALANCHE | 2009 |
| Chevrolet | AVALANCHE | Year not specified |
| Chevrolet | AVALANCHE 1500 | 2011 |
| Chevrolet | SILVERADO | 2010 |
| Chevrolet | SILVERADO | 2009 |
| Chevrolet | SILVERADO | 2008 |
| Chevrolet | SILVERADO | 2007 |
| Chevrolet | SILVERADO 1500 | 2014 |
| Chevrolet | SILVERADO 1500 | 2011 |
| Chevrolet | SILVERADO 2500 | 2015 |
| Chevrolet | SUBURBAN | 2009 |
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.