One problem related to brake hoses, lines/piping, and fittings has been reported for the 2003 GMC Sierra 3500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 GMC Sierra 3500 based on all problems reported for the 2003 Sierra 3500.
Brake lines are heavily rusted, truck is beyond warranty, dealer will not replace unless recalled.
| Brake Disc Caliper problems | |
| Brake Master Cylinder problems | |
| Brake Hoses, Lines/piping, And Fittings problems |