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.

10.0

really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
32,250 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.

2012 GMC Sierra brakes problems

brakes problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2012 GMC Sierra:

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

2012 GMC Sierra Owner Comments

problem #2

Jun 062014

Sierra 8-cyl Diesel

  • 54,500 miles

A D V E R T I S E M E N T S

Pulling into a parking spot in a parking garage going no more than 3 miles per hour, or however fast this vehicle can go while foot is resting on brake, getting ready to fully brake. As I pressed down on brake to stop, the vehicle continued as if the anti-lock brake system slipped, causing the truck to drive forward crashing through the sheetrock wall and finally stopping after hitting the glass windows. Two weeks later, after all cosmetic repairs were done, the vehicle did the same thing in another parking lot, but luckily broke before hitting the curb and light post. I did feel under my foot on the brake peddle, as I pressed down to stop, a slip of some sort which at the same time caused the vehicle to push forward right before stopping. This is definitely a malfunction of some sort with the anti-lock brake system.

- Plumas Lake, CA, USA

problem #1

Jan 022013

Sierra

  • 10,000 miles
Apparently GM uses peanut oil to lubricate wiring so they can more easily insulate, etc (accorging to the GM dealer). This attracts rats and mice which chew up the wiring - potentially impacting sensors and other items controlling cruise, stability/traction control, and any number of electrical systems that the driver may be relying upon for safety. I actually had map sensor wires chewed up that disabled my stability/traction systems and inhibited engine performance. Luckily for me it happened in my driveway rather than on the highway. Dealer claims it is not warranty item even though caused by a process that GM elects to use in building the vehicle. This could impact any/every vehicle that GM builds with use of peanut oil (may indeed be all of their models).

- Santa Clarita, CA, USA

Not what you are looking for?