really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
3 / 0
Average Mileage:
35,147 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.

2011 GMC Sierra 1500 engine problems

engine problem

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2011 GMC Sierra 1500 Owner Comments

problem #5

Jan 032014

Sierra 1500 8-cyl

  • 78,500 miles


Went about a mile was getting ready to make a left across md rt 4 when I lost power and reduced engine power light came, had a close call, on did some research and found a technical notice about throttle body and injector sensors they need a recall.

- Arlington, VA, USA

problem #4

Nov 162013

Sierra 1500

  • 90,000 miles
The contact owns a 2011 GMC Sierra 1500. The contact stated that the vehicle was powered on and in park when it lunged forward abnormally. The contact had to jump in the vehicle and depress the brakes to stop it from traveling any farther. The vehicle was taken to a dealer for diagnosis however, the dealer was unable to determine the cause of the failure. The vehicle was not repaired. The manufacturer was not notified of the issue. The approximate failure mileage was 90,000.

- Shelby Township, MI, USA

problem #3

Sep 022011

Sierra 1500

  • 3,100 miles
I was going 40mph when I went to stop quick to avoid an accident. I pressed on brakes truck did not slow down then all of a sudden it did down shift but at that the truck lunged forward causing me to clip the truck in front of me.

- Westfield, MA, USA

problem #2

Jan 192011

Sierra 1500

  • 1,335 miles
2011 GMC Sierra 1500 sle crew cab Z71 4X4 coming off of the expressway and coming to a stop at a traffic light I applied brake pressure. The brake pedal was unusally stiff then all of a sudden the engine revved to over 5000 RPM's and starting to move forward. I had my foot pushed firmly on the brake and the vehicle remained revving and moving forward. I quickly put it in park and turned off vehicle. Started back up and no issues on remaining drive. Cruise control was not engaged. Vehicle has less than 1400 miles on it.

- Bay City, MI, USA

problem #1

Dec 202010

Sierra 1500

  • 2,800 miles
Second report - sudden acceleration. 2011 GMC Sierra pu truck. On December 20, 2010 I was traveling to visit friends. While on highway I set the cruise control for 70 mph. I exited the freeway and traveled approximately 5 miles on city streets. Upon entering a bedroom township known for speed traps I attempted to engage the cruise control for 30 mph. When pressing the cruise control to set the speed I was traveling (30 mph) the truck down shifted and accelerated rapidly (to 4000 RPM). I immediately tapped the brake and the cruise control disengaged. This is the second time for this truck to down shift and accelerate rapidly. A previous report was made in November 2010.

- Houston, TX, USA

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