One problem related to engine has been reported for the 2005 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 GMC Yukon based on all problems reported for the 2005 Yukon.
: the contact stated the vehicle was unable to be placed into reverse gear. The vehicle was driven for awhile before it was taken to the dealership. While at the dealership, diagnostic tests were performed. The problem was with the reverse input piston seal. It was cut and not holding proper pressure. The seal was replaced however the vehicle was still having the problem after repairs were made. The vehicle was taken to 2 other dealerships where diagnostic tests were performed. The dealerships are unable to duplicate the problem.