Wheel Speed Mismatch
Table of contents
C0238 GMC Possible Causes
- Faulty Front or Rear Speed Sensor
- Front or Rear Speed Sensor harness is open or shorted
- Front or Rear Speed Sensor circuit poor electrical connection
- Faulty EBCM
How do I fix code C0238 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 C0238 GMC code
The cost of diagnosing the C0238 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)
C0238 GMC Description
As the wheel spins, the wheel speed sensor produces an Alternating Current (AC) signal. The Electronic Brake Control Module (EBCM) uses the frequency of the AC signal to calculate the wheel speed.