One problem related to power door locks not working has been reported for the 2005 GMC Envoy. The most recently reported issues are listed below.
The contact owns a 2005 GMC Envoy. The contact stated that the automatic door locks failed to lock and unlock the vehicle. In addition, the rear hatch door failed to unlock when initiated. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was 88,000.