Rear Axle Coupling Solenoid Temperature Sensor Circuit Short to Ground or Open
Table of contents
C0394 GMC Possible Causes
- Faulty Rear Axle Coupling Solenoid Temperature Sensor
- Rear Axle Coupling Solenoid Temperature Sensor harness is open or shorted
- Rear Axle Coupling Solenoid Temperature Sensor circuit poor electrical connection
How do I fix code C0394 GMC?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the C0394 GMC code
The cost of diagnosing the C0394 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Anti-Lock Brake System (ABS) Warning Light ON
- Engine Light ON (or Service Engine Soon Warning Light)
C0394 GMC Description
The rear differential Clutch Control Module (CCM) provides a power and ground circuits to the temperature sensor. When the temperature of the module is determined to be beyond its limits, the CCM will temporarily disable the rear drive system.