Question about GMC Envoy
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: 2002 envoy engine stumbling
Try cleaning the throttle body first. Make sure to clean both the front side and rear side thoroughly. Also, disconnect the battery while doing the cleaning, this will reset the computer and allow it to relearn to the cleaned throttle body.
Unless you have the check engine light on and can retrieve a fault code, do not start to change parts. With the mileage you have, you may want to change the O2 sensors.
Posted on Nov 19, 2011
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