really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
21,934 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 suspension problems

suspension problem

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2012 GMC Sierra Owner Comments

problem #2

Jun 012015


  • 43,449 miles


I purchased a 2012 GMC Sierra denali from stahl motors in monterey, ca in February of 2015. They are not willing to pay for the damages to my truck even though they sold me a completely dangerous vehicle, which I will explain. My truck didn't feel right as I was driving so I decided to take it to a shop to get looked at. There is a long list of things that is wrong with the vehicle, but I will mention just the main ones. The truck was sold to me without the rear brakes hooked up. The brake lines for the rear calipers were capped off by the rear differential. When the mechanic shop discovered that, they also discovered the master cylinder was completely dry, which caused damage to my front brakes. There was no cross member underneath the vehicle from frame to frame. It was torched out, therefor leaving zero support for the frame of the truck as well as the front differential. Which needed to be rebuilt caused from excessive movement left to right. Front differential needed to be rebuilt caused from the damage of no cross member in place. Ball joints were also affected (about to pop out of control arms) due to wrong parts installed in front suspension of vehicle.

- Spokane, WA, USA

problem #1

Mar 132012

Sierra 8-cyl Diesel

  • 420 miles
Just purchases new 2012 GMC Sierra 3500, 400 miles, have had alignment / steering problems with a drift to left and a wondering steering wheel, also brake and ABS lights on, went to dealer they looked at it for 2 hrs, and said it needed a part ordered and there was a tsb on it, the tech said it would be safe to drive but I would not have ABS brakes, also he would check alignment again at time when part came in 4 days est, brake and ABS light remained on, vehicle drove fine the next day until a accident, went around curveat 55 mph, applied brakes to slow, brakes went to floor un able to slow at all went off the road lost control and crashed into trees, both airbags deployed, went to emergency room with arm injury and rib injuries, brand new truck very scarry I will never buy a GM poduct again.

- North Liberty, IN, USA

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