One problem related to gasoline storage has been reported for the 2000 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 GMC Yukon based on all problems reported for the 2000 Yukon.
Fuel leak at the main fuel tank access port. This vehicle has two fuel tanks, the smaller auxiliary tank(which are oem) hold about 8 gallons. Upon filling the vehicle to its capacity, fuel would leak out until the auxiliary tank was empty and as long as you do not fill completely full ( 3/4 on the fuel gauge) it would not leak fuel. This problem eventually caused the fuel pumps to go bad and where replaced and the leak fixed. Now on November 29, 2007 after completely filling the leak is back again, up until this point the repair aloud complete filling.