One problem related to seats has been reported for the 1999 GMC Yukon. The most recently reported issues are listed below.
Basically consumer was having a problem with abs braking system. When applying brake pedal, pedal stuck and ruined rotors. Also, air conditioning went out three times due to a hole inside of vent area. Check engine light came on due to faulty harness. Transmission slips on acceleration. The engine runs rough at idle. Button on left front seat rattles. Right front outer brake pad was worn. Vehicle pulls left when applying brake.