Two problems related to front seat belt have been reported for the 2001 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2001 GMC Yukon based on all problems reported for the 2001 Yukon.
First there was a tire blowout, tire separated with 11/32 thread left. Second at least 1 seat belt did not hold. Third no airbags went off. Fourth the roof caved in like a "v" shape in the drivers compartment, by the windshield.
There was a design issue with the passenger front seat belt, when the seat belt was fastened, it locked permanently, and did not allow the passenger to move foward.