One problem related to underhood wiring has 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.
Frontal impact between my 2003 Yukon xl denali and a 1992 Honda prelude. Impact to my vehicle in front left corner # 40 mph causing minor damage to my vehicle resulted in my vehicle catching fire within 30 seconds of impact. My vehicle was totaled as a result of the fire, not the impact.