GMC Troubleshooting Questions? Ask a Mechanic for Answers
My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
Inspect the glow plug wiring to #5 and see if this wiring is found to be damaged or shorted in any way causing this fault here.Inspect the wiring at and leading from the glow plug control unit as well for any issues.If a fault is found it will need repaired.If no issues are found let me know so we can continue.
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