One problem related to fuel delivery has been reported for the 1998 GMC Sierra. The most recently reported issues are listed below.
After driving for over 200 miles, the driver noticed that the fuel gauge failed. The vehicle jerk and vibrated. The vehicle was taken to a body shop for inspection. The mechanic informed the driver that the fuel sending unit needed to be replaced.
| Fuel Injector problems | |
| Fuel Pump problems | |
| Fuel Delivery problems | |
| Tank Mounting problems | |
| Tank Assembly problems |