One problem related to power train driveline has been reported for the 2002 GMC Envoy. The most recently reported issues are listed below.
Drive train had to be replaced twice on my new SUV within a five year period. It had the same damage problem both times, which ifill this is a bit out the ram for this 'type of truck(SUV) . The car would drive forward but would not go in reverse, and it happened on the hwy.