Code : C0238
Make : GMC
Description : C0238 GMC Wheel Speed Mismatch
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
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.
