2003 GMC Sierra 2500 service brakes, hydraulic problems
43 owner complaints filed with NHTSA name the service brakes, hydraulic on the 2003 GMC Sierra 2500 — 27% of all complaints for this model year.
What owners report
“Tl* the contact owns a 2003 gmc sierra 2500 hd. The contact stated while driving approximately 10 mph, the brake pedal traveled to the floorboard when depressed. The vehicle eventually came to a stop and was taken to an independent mechanic. The technician diagnosed that both rear brake lines were…”
filed Jun 3, 2014
“While driving up to an intersection I applied the brakes and the pedal dropped to the floor, no brakes. The cross traffic was approaching at 50 mph, and my road stopped so I had to make a left or right. Luckily, by some miracle the oncoming traffic just missed slamming into me. I have never…”
filed Aug 7, 2013
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Service Brakes, Hydraulic problems in other Sierra 2500 years
| Year | Reports | Share |
|---|---|---|
| 2025 Sierra 2500 | 1 | 4% |
| 2024 Sierra 2500 | 1 | 1% |
| 2009 Sierra 2500 | 2 | 6% |
| 2007 Sierra 2500 | 4 | 5% |
| 2006 Sierra 2500 | 6 | 9% |
| 2005 Sierra 2500 | 19 | 17% |
| 2004 Sierra 2500 | 22 | 15% |
| 2002 Sierra 2500 | 44 | 33% |
| 2001 Sierra 2500 | 44 | 33% |
| 2000 Sierra 2500 | 23 | 48% |
| 1999 Sierra 2500 | 13 | 36% |
Other reported problem areas on the 2003 GMC Sierra 2500
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.