Having problems with your 2002 GMC Envoy ?
I have noticed my 2002 GMC Envoy (87,000 miles) loses RPM while idling at the stop light. The RPM jumps between 5000 and 10000 a few times while idle then rests at 5000. I notice this only happens when I come to a stop after driving on the highway. What could be the problem? Would it be solved by a basic tuneup?
Repair Help & Product Troubleshooting for 2002 GMC Envoy
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