One problem related to starter has been reported for the 2005 GMC Envoy. The most recently reported issues are listed below.
I have a 2005 GMC Envoy. I have had several issues with the ignition switch, the fuel gauge sensor, and the rear hatch. I have replaced the ignition switch four times, purchased a new battery, and a new starter, as well as a fuel sensor. I still have intermittent issues with my car not starting for no apparent reason and stalling out while driving and especially when decelerating. The stalling is a severe safety hazard as I travel very busy highways during my daily commute. My wife and children, as well as myself, have been stranded many times when the vehicle would not start after operating fine prior to turning off ignition. We have had the vehicle in the shop many times and have been told there is nothing that can be done for us because they have no idea what the cause is. At this point, I do not allow my wife to drive the vehicle anymore out of fear for the safety of her and my children. This is a significant stress for us that I feel we should not have to endure.