general problems of the 2011 GMC Sierra 1500

Issue #1-while driving the vehicle stablitrak warning light, traction control, engine power reduced, and brake light all came on. Vehicles engine power was suddenly reduced to about 10 mph while driving on the interstate in which I found to be very dangerous! had to pull over, turned off vehicle, lights went off, started driving again, vehicle did the same thing. Had to take in for mechanical repairs. Issue #2- key ignition switch just started locking up on the vehicle, would not turn back to normal to position, had to repeatedly keep jiggling for over 30 minutes or so to get the vehicle started back up?? had to take vehicle to dealer for repairs also. These are very unsafe and costly issues that GMC should be mandatorily required to have recalled and immediately addressed for the safety of the general public!!.

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.

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.

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 foward causing me to clip the truck in front of me.

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