GMC YUKON 2002

i would say that you could have one of two issues.
1 being a bad (intermitten) ground.
2 the rheostat on the sender is bad.
i have had this issue with a 1995 impala. the only issue is that you have to drop the tank to fix it.
i have tried to find the rheostat only for my car but gm doesn't sell it seperatly.
first , check the ground comming out of the tank and make sure that its good. if not, a new sender is needed.


hope this helps



dave

Had the same issue a year ago with my 2003 Yukon. It was a defective module for the dash cluster and was covered under SPECIAL COVERAGE Adjustment #07187. Not sure if it applies to the 2002 model year.