2007 GMC Sierra service brakes problems
12 owner complaints filed with NHTSA name the service brakes on the 2007 GMC Sierra — 20% of all complaints for this model year.
What owners report
“Metal brake lines rusted prematurely @ 29,900 miles causing brake line to rupture. This caused brake failure. Truck had to be towed to dealer who diagnosed rusted brake lines. For future safety all metal brake lines on truck required replacement. Failure occurred in work parking lot so no accident…”
filed Apr 8, 2016
“I had a minor vehicle accident when I applied the brakes they went straight to the floor. I hand my vehicle towed to shop and it was found that the brake lines had rusted thru in the bracket on the firewall.”
filed Mar 24, 2016
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn.
PIT3665E · Service Bulletin/Repair Instructions · issued Jan 31, 2017
Service Brakes problems in other Sierra years
| Year | Reports | Share |
|---|---|---|
| 2017 Sierra | 19 | 31% |
| 2015 Sierra | 2 | 4% |
| 2013 Sierra | 4 | 10% |
| 2012 Sierra | 3 | 10% |
| 2011 Sierra | 3 | 7% |
| 2010 Sierra | 3 | 9% |
| 2009 Sierra | 1 | 3% |
| 2008 Sierra | 1 | 1% |
| 2006 Sierra | 20 | 38% |
| 2005 Sierra | 27 | 23% |
| 2004 Sierra | 44 | 23% |
| 2003 Sierra | 45 | 22% |
Other reported problem areas on the 2007 GMC Sierra
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.