Service Engine Light On problems of the 1999 GMC Yukon

One problem related to service engine light on has been reported for the 1999 GMC Yukon. The most recently reported issues are listed below.

1 Service Engine Light On problem

Failure Date: 08/04/2006

The service engine light came on in vehicle. I took vehicle to auto zone for a diagnostic check and it stated the pc-valve needed to be replaced and something about the emissions. I took the vehicle to the dealership and they stated the pistons melted on the heads and engine needed to be replaced.




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