One problem related to fuel hoses lines/piping and fittings has been reported for the 2003 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 GMC Yukon based on all problems reported for the 2003 Yukon.
My 2003 Yukon xl (51,000 miles) flex fuel sensor is rotting off the vehicle. Was told it is not covered. It is self destructing around the area where the fuel lines enter the sensor. If the corrosion continues it will cause fuel to spray all over the undercarriage. I am an ase master tech. And a vocational automotive instructor. I feel this could pose a severe safety issue.
| Fuel Pump problems | |
| Tank Assembly problems | |
| Gasoline Fuel System problems | |
| Tank Filler Pipe And Cap problems | |
| Fuel Hoses Lines/piping And Fittings problems |