One problem related to underbody shield has been reported for the 2005 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 GMC Sierra 1500 based on all problems reported for the 2005 Sierra 1500.
Driving home from little league game with my 7 yr old, came into traffic in town and my brakes went mushy, within a couple minutes went from mushy to 5% braking. Made it home about 2 miles by pumping quickly just enough to slowly stop at the end of drive. When exiting the vehicle, there was a pool of brake fluid eating through my asphalt driveway. All brake fluid had drained out completely rusted / corrosion area of all brake lines by bundle under drivers seat. My mechanic, says other areas are almost as bad in other areas in the rear. Now I'm looking at 500+ in line repairs.
| Frame Rust problems | |
| Tailgate Hinge problems | |
| Underbody Shield problems |