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
14Original wording in English
CADILLAC, CHEVROLET, GMC
Reported code forms C1114
This Preliminary information communicates an issue with the Hydrastar Electric Over Hydraulic trailer brake system causing a voltage spike into the trucks electrical system which is causing DTC C1114 to set.
CADILLAC, CHEVROLET, GMC
Reported code forms C1114
This Preliminary information communicates an issue with the Hydrastar Electric Over Hydraulic trailer brake system causing a voltage spike into the trucks electrical system which is causing DTC C1114 to set.
CADILLAC, CHEVROLET, GMC
Reported code forms C1114
This Preliminary information communicates an issue with the Hydrastar Electric Over Hydraulic trailer brake system causing a voltage spike into the trucks electrical system which is causing DTC C1114 to set.
CHEVROLET, GMC
Reported code forms C1114
This Preliminary information communicates an issue with the Hydrastar Electric Over Hydraulic trailer brake system causing a voltage spike into the trucks electrical system which is causing DTC C1114 to set.
CADILLAC, CHEVROLET, GMC
Reported code forms C1114
This technical bulletin provides a procedure to correct the condition of Trailer Brake Disabled and/or DTC C1114 Stored During Pulling a Trailer with a Battery, Generator or Solar Charger.
CADILLAC, CHEVROLET, GMC
Reported code forms C1114
This technical bulletin provides a procedure to correct the condition of Trailer Brake Disabled and/or DTC C1114 Stored During Pulling a Trailer with a Battery, Generator or Solar Charger.
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 |
|---|---|---|
| GMC | SIERRA 3500 | 2026 |
| GMC | SIERRA 3500 | 2025 |
| GMC | SIERRA 3500 | 2024 |
| GMC | SIERRA 3500 | 2023 |
| GMC | SIERRA 3500 | 2022 |
| GMC | SIERRA 3500 | 2021 |
| GMC | SIERRA 3500 | 2020 |
| GMC | SIERRA 3500 | 2019 |
| GMC | SIERRA 3500 | 2018 |
| GMC | SIERRA 3500 | 2017 |
| GMC | SIERRA 3500 | 2016 |
| GMC | SIERRA 3500 | 2015 |
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.