One problem related to tank mounting has been reported for the 2003 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 GMC Sierra 1500 based on all problems reported for the 2003 Sierra 1500.
Check engine light investigated, and cause found to be loss of fuel tank pressure due to rotted out fuel filler neck. Original part made of non-corrosion resistant steel. Other corrosion problems with this vehicle have involved brake lines. The first line was replaced in 2007, when the vehicle was only 4 years old. A more extensive replacement of corroded lines was done in 2008 or 2009. These are serious safety and emissions related problems, and these vehicles should be recalled as a result of them. Owners who have paid for repairs in the past should be compensated by a reasonable amount.
| Fuel Hoses Lines/piping And Fittings problems | |
| Tank Mounting problems |