2003 GMC Sierra 1500 service brakes, hydraulic problems
50 owner complaints filed with NHTSA name the service brakes, hydraulic on the 2003 GMC Sierra 1500 — 28% of all complaints for this model year.
What owners report
“While having my vehicle check over for the winter, the mechanic inform me that the front brake lines are very rusty as well as the fuel lines and the cooling lines going to the transmission. This situation is very disturbing since I have very low mileage. The tubing used for the brake as well as…”
filed Jul 13, 2015
“Tl* the contact owns a 2003 gmc sierra 1500. The contact stated that while driving 30 mph, the vehicle failed to respond to deceleration attempts and that the brake warning light illuminated. The contact inspected the brakes and noticed that the failure was due to corrosion. The vehicle was not…”
filed Jun 6, 2014
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Service Brakes, Hydraulic problems in other Sierra 1500 years
| Year | Reports | Share |
|---|---|---|
| 2026 Sierra 1500 | 1 | 1% |
| 2024 Sierra 1500 | 1 | 0% |
| 2023 Sierra 1500 | 2 | 0% |
| 2022 Sierra 1500 | 2 | 0% |
| 2021 Sierra 1500 | 1 | 0% |
| 2020 Sierra 1500 | 3 | 1% |
| 2019 Sierra 1500 | 8 | 1% |
| 2018 Sierra 1500 | 4 | 1% |
| 2017 Sierra 1500 | 6 | 2% |
| 2016 Sierra 1500 | 6 | 2% |
| 2015 Sierra 1500 | 11 | 2% |
| 2014 Sierra 1500 | 5 | 1% |
Other reported problem areas on the 2003 GMC Sierra 1500
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.