Quote:
Originally Posted by jolson63
Has anyone in countered an occasional backfire. When this happens the traction control service light comes on. The tachometer quits working and the check engine light comes on also. The code in the ECM is CRANKSHAFT POSITION SENSOR. The GM dealer is stumped also. Any advise would be helpful.   |
If it is a bad sensor, they should replace it under warranty. Why is the dealership stumped?