Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


really awful
Crashes / Fires:
3 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
70,866 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2007 GMC Sierra brakes problems

brakes problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2007 GMC Sierra:

Unsubscribe any time. We don't sell/share your email.

2007 GMC Sierra Owner Comments

problem #12

Apr 042016


  • 29,900 miles


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 occurred due to failure.

- Delaplane, VA, USA

problem #11

Mar 072016


  • 130,000 miles
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.

- Merritt Island, FL, USA

problem #10

Sep 012015


  • 98,000 miles
Noticed a puddle of fluid on the garage floor. Investigated and found it to be brake fluid. The entire reservoir emptied on the floor after a day. I had a hole in one of the brake lines under the drivers side. Looking under the truck all the line were terribly corroded and could break at any time. Taking it to my mechanic next week to replace all the lines. 9/1/2015

- Byron, IL, USA

problem #9

Oct 132014

Sierra 8-cyl

  • 174,233 miles


I drive a company truck during the week and make a habit of driving my Sierra once a week as well. I was going down the driveway to the main road when the pedal fell to the floor. No brakes whatsoever. I used the emergency brake to come to a safe stop. I looked under the hood to realize that the brake lines were rusted and had blown a hole. This truck is not that old and I do not live in a northern state where salt corrosion is an issue. I baby my truck and keep it up. I later did a search on the web an found out that thousands of others are having this issue as well. This is ridiculous, this is a bad material choice for brake lines. GMC needs to realize this and recall all of us and install coated, or better yet, braided/poly-covered lines to make sure this never happens again. What if I were traveling at a higher rate of speed and had my family in the car? I can see their stand on this being a maintenance issue, but I have friends with early 80's and 90's model trucks that still have the original brake lines in them, not corroded or rusted, and still work great. Get on the ball GMC and take responsibility for this.

- Kingston Springs, TN, USA

problem #8

Aug 122014

Sierra 4WD 6-cyl

  • Automatic transmission
  • 78,000 miles
The contact owns a 2007 GMC Sierra. While driving 55 mph, the brake pedal failed to respond when it was depressed and the ABS indicator illuminated. The contact discovered that there was no brake fluid in the reservoir and the brakes were rusted. The vehicle was taken to the dealer for diagnostic testing, but was not repaired. The manufacturer was not notified of the failure. The failure mileage was 78,000. Updated 10/10/14 the consumer stated upon depressing the brake pedal the vehicle slowed, but the pedal went to the floor. The driver made a right turn at 35 mph and slid into gravel almost hitting a guardrail. The manufacturer stated they haven't received any similar complaints. The consumer has heard otherwise from various mechanics. The vehicle was repaired. Updated 3/31/2015

- Whipple, OH, USA

problem #7

Aug 192014


  • 36,000 miles
The contact owns a 2007 GMC Sierra 2500 hd. The contact stated that while driving approximately 30 mph, the brake pedal was depressed but failed to engaged. The contact had to use the electric brake from the horse trailer in order to stop the vehicle. The vehicle was taken to the dealer. The technician diagnosed that the brake lines were rusted. As a result, the brake calipers along with brake lines needed to be replaced. The manufacturer was made aware of the failure. The approximate failure mileage was 36,000.

- Delaware, OH, USA

problem #6

Jul 012014


  • 26,000 miles


The contact owns a 2007 GMC Sierra. The contact stated that after starting the vehicle, the service stability track, the service traction control, and the anti lock braking system lights illuminated. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 26,000.

- D'iberville, MS, USA

problem #5

Mar 282014

Sierra 6-cyl

  • 62,258 miles
Brake line left front rusted thru. Had to use parking brake..had truck taken to shop replaced line with stainless steel.

- Kinsman, OH, USA

problem #4

Sep 252013


  • 86,000 miles
When traveling through an intersection at a green light another vehicle illegally entered the intersection. I saw the vehicle and attempted to stop but when I hit the brakes the pedal went down to the floor and no braking action occurred. I was told I blew a brake line. The car was repaired of the damage from the accident but I had to pay for the brake line repair. After getting the truck back I brought it back to the repair shop for an alignment within a few days. While the repair shop was driving the car in for the alignment a second brake line blew. There is not a recall from GMC and there no reason why the brakes lines should be rusting out and blowing on a car that is well maintained.

- Stormville, NY, USA

problem #3

Oct 242013


  • 70,000 miles
Brake line burst when I pumped brake pedal prior to start of trailering a horse trailer. GMC dealer stated brake lines were rusted through. Dealer had inspected vehicle week before during tune-up and did not notify me of rust or issues with brake and fuel lines rusting in GM trucks. I found reported issues with rusting brake lines in GM trucks per my own research. Brake lines are being replaced at my expense.

- Branchburg, NJ, USA

problem #2

Sep 202013

Sierra 4WD 8-cyl

  • 60,000 miles
Brake lines rusted out resulting in brake failure, luckily it happened at a complete stop on the side of a road.

- Norwich, CT, USA

problem #1

Dec 012011


  • miles
The contact owns a 2007 GMC Sierra. The contact stated that when the vehicle was decelerated, the anti lock braking system would activate once the vehicle's speed was below 5 mph, causing an increase in stopping distance. The contact took the vehicle to the dealer and was told to remove the fuse. The dealer did not repair the vehicle. There was a manufacturer's recall for the failure however, the contact's vehicle was not included in the recall. The failure mileage was unknown and the current mileage was 50,000.

- Demotte, IN, USA

Not what you are looking for?