GM OBD Trouble Code 68
A/C Clutch Relay circuit error (shorted to ground)
The ECM monitors the A/C compressor relay control circuit. If the control circuit is shorted to ground the ECM will set code 68 and the A/C compressor operation will be disabled.
Fault Code Description
- 68 - A/C Clutch Relay circuit error (shorted to ground)
Symptoms
- Poor A/C performance
Common Problems
- Shorted wiring to A/C compressor relay
- Faulty A/C compressor relay
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