Question about 2002 GMC Envoy
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Posted on Jan 02, 2017
SOURCE: Service Engine Soon Light
The best way to know what is happening there is to drive a GMC dealer and get them to hook in the diagnostic tool and read the computer memory for present faults.
Posted on Apr 19, 2009
you need to scan you vehicles ECM, there is a trouble code stored there. depending on where you live most parts stores( such as a shucks/orielleys) will have a scan tool they will let you use if the vehicle is in thier parking lot. this should diagnose the issue, provided the battery hasnt been disconnected since then.
Posted on Mar 13, 2012
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