Two problems related to wiring have been reported for the 2007 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 GMC Yukon based on all problems reported for the 2007 Yukon.
Rear driver tail light wiring does not work. Put new bulbs in and only thing that works are the brake and reverse light. There is no running light that comes on.
Wiring to rear window defroster became detached at soldering connection. Was told entire rear window had to be replaced. Yukon was still in warranty.