C1114 on 2015-2023 GMC Sierra 3500HD — Manufacturer-Specific Chassis Control Code
1 vehicles · 1 makes · $80-$900 repair
Most Reported On
C1114 is an OBD-II diagnostic trouble code meaning “Manufacturer-Specific Chassis Control Code.” C1114 is a manufacturer-specific chassis trouble code, and its meaning differs between makers (for example, some applications associate it with a trailer brake control or other chassis control circuit). Broadly, it indicates that a chassis control module detected a fault in a circuit or component it monitors. Because there is no single generic definition, do not assume a specific component without confirmation. Use a capable scan tool with manufacturer data or the factory service manual to determine what C1114 means on your exact vehicle. This code is most commonly reported on 2015-2023 GMC Sierra 3500HD, with repair costs ranging from $80 to $900.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose C1114, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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FAQ
What does C1114 mean?
C1114 stands for "Manufacturer-Specific Chassis Control Code." C1114 is a manufacturer-specific chassis trouble code, and its meaning differs between makers (for example, some applications associate it with a trailer brake control or other chassis control circuit). Broadly, it indicates that a chassis control module detected a fault in a circuit or component it monitors. Because there is no single generic definition, do not assume a specific component without confirmation. Use a capable scan tool with manufacturer data or the factory service manual to determine what C1114 means on your exact vehicle.
What are the most common causes of C1114?
The most common causes of C1114 are: Wiring or connector fault in the affected circuit, Faulty control solenoid or actuator, Open or short circuit (to ground or power), Low or unstable supply voltage / poor ground, Internal control module fault, Corrosion or moisture at connectors. The specific cause varies by vehicle.
How much does it cost to fix C1114?
Repair costs for C1114 range from $80 to $900, depending on the vehicle and root cause.
Which vehicles are affected by C1114?
Au7o has documented C1114 across 1 vehicle models from 1 manufacturers: GMC.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.