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.


pretty bad
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
6,272 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 engine problems

engine problem

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2012 GMC Sierra Owner Comments

problem #2

Nov 012012


  • 7,000 miles


The contact owns a 2012 GMC Sierra K-1500. The contact stated that while driving 75 mph, the vehicle began to decelerate as the warning lights in the instrument panel illuminated. The vehicle would not accelerate beyond 35 mph. The failure was resolved momentarily after the vehicle was restarted but soon recurred. The vehicle was taken to the dealer, but they where unable to duplicate the failure. The failure was not reported to the manufacturer. The failure mileage was 7,000. The current mileage was 20,000. Kmj

- North Las Vegas , NV, USA

problem #1

Oct 172012

Sierra 4WD 8-cyl

  • 5,545 miles
The contact owns a 2012 GMC Sierra. The contact stated that while driving uphill and attempting to decelerate. The vehicle accelerated abnormally. In order to stop the vehicle, the contact abruptly applied the brakes as the engine exhibited a loud thump. The contact took the vehicle to the dealer but they were unable to duplicate the failure. The failure and the current mileages were 5,545. Updated 13/13/12

- Reedsville, WV, USA

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