Two problems related to horn assembly have been reported for the 2008 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 GMC Yukon based on all problems reported for the 2008 Yukon.
The contact owns a 2008 GMC Yukon denali. The contact stated that the air bag warning indicator illuminated. The contact took the vehicle to the local dealer (reedman toll auto world, 1700 east Lincoln hwy #101, langhorne, PA 19047) where it was diagnosed that an air bag sensor needed to be replaced. The vehicle was not repaired due to the vehicle being included in NHTSA campaign number: 16v383000 (air bags) and the decision on the petition was pending. The repair for the warning sensor would cause the bumper to have to be removed. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was approximately 108,000.
Driver side power door locks work intermittently. Horn sounds indicating door is locked however it doesn't lock. Also remote start does work leaving vehicle a target for theft. Also three of four of the exterior door handles broke and had to be replaced.