One problem related to tank assembly has been reported for the 1998 GMC Yukon. The most recently reported issues are listed below.
Fuel tank leaks from top of tank after fill-up, all fittings appear to be ok. This only occurs after topping off, but loses about 1 gallon from top mid-section of tank. Also fuel gauge has been acting up since this started going from full to empty while driving.
| Fuel Pump problems | |
| Gasoline Fuel System problems | |
| Tank Assembly problems |