Question about 2003 GMC Envoy Xl
First thing to do is to clean the throttle body and throttle plate thoroughly. While performing the cleaning, disconnect the battery for about 30 minutes. This will force the PCM to relearn with a clean throttle body. See if this helps with running and the codes. Also make sure the gas cap is tightened properly.
Posted on Sep 29, 2010
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Posted on Jan 02, 2017
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