Question about 2002 GMC Envoy
I had same problem with 2005 Envoy XL 4.2L
After several trips to dealer with "No problem found"....I finally found a technician that determined my ignition switch was intermittently not reading the security chip in the key.
Replaced ignition switch and problem never re-occurred.
Posted on Nov 13, 2010
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Posted on Jan 02, 2017
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