Three problems related to differential unit have been reported for the 2002 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 GMC Yukon based on all problems reported for the 2002 Yukon.
Whining in engine-found to be bad bearings and metal in differential. Was told could have made car lock up at anytime (imagine that in heavy traffic). This is second car in family with exact same problem although was told it was "rare".
: the contact stated while attempting to turn at 15 mph, the rear driveline differential broke followed by a banging noise as though it was dragging. The vehicle was seen by a dealer for inspection. While the mechanic test drove the vehicle, the driveline differential unit completely separated. The vehicle is currently at the dealership awaiting repairs. Updated 05/04/06.
Four wheel drive makes grinding noise during turns. Manufacturer advised me that this is normal.