Two problems related to horn assembly 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.
Truck started to have major eletrical issues. Blubs burning out often sockets burning out had to replace too often. Light covers melting. Headlights out and will not come back on for days, have to tap them to get them to come back on. Horn blows from alarm all times of the day and night. Inside lights on dash, steering wheel and doors will not work at times all lights are not functioning correctly. Lights at times too often will not work at all. Stability warning light comes often. Afraid truck will catch fire from the electrical issues. . Please help!!!!.
I own a 2003 GMC Yukon denali. I'm having a problem where the speedometer and horn are intermittently going out. I can drive the truck one day and it's fine and later that day or during another drive, the horn will not work and the speedometer with either do a 'jumping' motion or will not move at all. There have been no crashes to date. I called my local GMC dealer and they informed me that they had not heard of these problems with the denali but there was a problem with the horns on the sierra trucks. . .