Three problems related to car will not start have been reported for the 2003 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 GMC Yukon based on all problems reported for the 2003 Yukon.
Tl the contact owns a 2003 GMC Yukon. The contact stated that when the key chain was attached to the keys, the vehicle failed to start however, when the key chain was removed, the vehicle start as designed. The vehicle was not taken to a dealer nor an independent mechanic for diagnostic testing. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 220,000.
I pulled out of my driveway in my 2003 GMC Yukon xl and only went a short distance when I noticed the engine was very sluggish and the dic showed "reduced engine power". I turned around and went home. I shut the vehicle off. When I started it up a little while later it was fine. I called the dealership where I purchased it and they said that this was common and it was due to refueling with the vehicle running or a loose gas cap. . . Neither of these had happened in my case. The next day I had my three children in the vehicle and was driving south on rt. 95 when the vehicle just shut down. I lost all ability to maneuver the vehicle. The vehicle would not start and had to be towed. The mechanic that towed it read the dtc's and found the following: -class 2 data link malfunction. - body control module. - pcm to tac module serial data connection. I placed a call to GMC on 9/2 to report the problem and the danger it had placed my family in. They told me it had to go to a dealership for an official diagnosis. After researching this issue I have found that the same problem has occurred numerous times w/ other Yukons as well as 2003 chevy avalanches. After reading the technical service bulletins regarding this issue it is very apparent that GMC is fully aware of this very serious safety issue but has chosen to ignore it putting millions at risk every day. Someone needs to address this before more people get hurt.
: the contact stated on three occasions while driving at highway and freeway speeds of 30- 75 mph the vehicle made a loud grinding noise followed by another loud bang. The vehicle stalled and filled with white smoke. The vehicle was towed to a local dealership each time. The entire a/c was replaced on two occasions. On another occasion various parts of the a/c was replaced. On three other occasions the vehicle would not start and was towed each time. The battery was replaced a total of three times. The problem still persists.