2003 GMC Sierra brakes problems
86 complaints about brakes have been filed for the 2003 GMC Sierra, which is 35% of all its NHTSA complaints. It is the most reported problem area for this model year.
At a glance
- Complaints
- 86 35% of this year's complaints
- Typical mileage
- 78,000 miles 78 complaints with mileage
- Crashes and fires
- 6 and 0
- Injuries and deaths
- 4 and 0
Source: NHTSA owner complaints
When brakes problems show up
View the numbers
| Mileage | Complaints |
|---|---|
| 0k to 20k miles | 9 |
| 20k to 40k miles | 10 |
| 40k to 60k miles | 9 |
| 60k to 80k miles | 12 |
| 80k to 100k miles | 13 |
| 100k to 120k miles | 13 |
| 120k to 140k miles | 5 |
| 140k to 160k miles | 3 |
| 160k to 180k miles | 2 |
| 180k to 200k miles | 0 |
| 200k+ miles | 2 |
What the data shows
Of the 78 brakes complaints that report mileage, the median is about 78,000 miles, and 36% were reported before 60,000 miles.
These complaints mention 6 crashes, 4 injuries.
What owners wrote
Truck was entering major highway,traffic begins too slow due to rush hour ,seeing this occur I stepped on brakes expecting to slow down ,until I realized pedal had gone all the way to floor,then I let up an pushed to floor again-no brakes no room to go left or right impact was unavoidable,impacted car twice which pushed that car into another this truck was serviced by GM dealer for transmission cooling line and engine cooling lines monday tuesday and wednesday, no mention of brake lines issue, accident occurred on…
Backing out of a parking space I applied the brakes and the pedal went to the floor. I hit a steel pole causing damage to my rear bumper. I was pretty sure I knew what was wrong. I inspected the truck and found brake fluid dripping from under the vehicle in the area of the drivers door. Further inspection showed the brake lines were very rusted which I attribute to the brake line failure.
Other problems reported for the 2003 GMC Sierra
- Electrical system 31 complaints
- Steering 28 complaints
- Transmission 17 complaints