The contact owns a 2011 Chevrolet Silverado 2500. The contact stated that the electronic stability control indicator illuminated. The local dealer and manufacturer were not contacted. The vehicle was not diagnosed or repaired. The failure mileage was 125,000.

- Electic, AL, USA

Randomly while driving, warning bells & lights flash, message in dic state service stabilitrak/traction control. Instrument cluster goes dead, A/C quits cooling & radio quits. If the vehicle is in motion it will continue to be drivable. As soon as you stop or are stopped when it occurs, the transmission stops working. The engine continues to run, and can be revved however the vehicle will not move. After turning off the ignition, opening the driver's door and waiting a couple of minutes, you can restart the engine, the gauges and transmission will once again operate. It has now started to periodically cause the driver side low beam headlight and driver's door lock to not function as well.

- Colleyville, TX, USA

We have had a recurring issue with the traction control feature on this vehicle since buying it. Randomly and out of nowhere it will show stabilitrak off on the instrument panel. The engine becomes sluggish when this happens. This, to me, is a safety hazard when driving. There is also an issue with the ignition getting stuck when starting where it grinds the starter. I have to turn the truck off and start it again to get it to stop. I have had the vehicle at the dealer where it was purchased and they have no clue what to do about the stabilitrak issue. I have read many complaints on this and there should be a recall.

- Salvisa, KY, USA

I was driving my daughter to school and the vehicle slowed down on its own. And when I pushed the gas it jumped and shifted hard, had to cruise all the way home vehicle wouldn't start back up. Stability and traction control lights came on engine reduced speed and cut off.

- Concord, NC, USA

Driving about 60 mph about 10 miles into the trip when the truck lost speed, the ABS brakes did a slight on and off pulsating every couple of seconds, the engine was running rough and giving it gas the engine revved up but wouldn't go anywhere. Speed dropped down to 35 or 40 mph and wouldn't go any faster. The dash indicator showed messages stating stabilitrak traction control turned off and check engine light is on. It jolted real hard when it shifts gears. When I mashed the brake it didn't want to come to a complete stop without pressing the brakes to hold the truck there. I pulled into a store popped the hood and finding nothing I turned the truck off for a few seconds and restarted it but nothing changed and the error messages were still being displayed. The trucks engine was running rough. I headed home and it didn't have any power and jolted hard as it shifted gears. I coudln't go but 35 or 40 mph on the level ground. If I went up a slight hill the truck slowed down more until I got past the hill. I gave it gas and the engine would rev up but had no power and wouldn't go 35 or 40 mph. I parked the truck in the garage and in 10 minutes I went to start it to get the error messages and it started up fine and the engine wasn't running rough. I drove it 1/2 mile down the road and back and it ran perfect. I googled the error messages and found alot of complaints and comments about this issue on the Chevrolet forum website. No recall information just alot of people experiencing the same issue and alot worse cases that almost caused accidents. Is there a recall on this issue? I read that I will probably have the issue again because after it sits for 10 min it probably won't have a problem until a few minutes or days later. I can only hope doesn't cause me to have a wreck and kill myself or someone else. This is a major issue and should be recalled to fix the problem.

- Denton, TX, USA

I was traveling on a divided highway and approaching a slow moving truck in the right lane ahead of me. There was another truck behind me in my lane. I moved to the left lane to pass the slow truck. Just after I began the pass my pickup slowed quickly and began flashing error messages: Stability control disabled, engine power reduced & service stabilitrak. The truck behind me had moved up close and followed me around the slow moving truck. I was unable to accelerate and continued slowing quickly. I had just enough room to swerve in behind the slow truck as my speed fell below its speed. The truck behind me narrowly avoided a rear impact with my truck, which, I believe, would have been catastrophic. I pulled to the right and tried to speed up. About 40 mph was all my truck would do. I stopped and got out the manual. It said to reset the stabilitrak, turn the vehicle off for 30 seconds. I did that and the truck seemed to functioned normally, at least as far as engine power. I still had traction control & stabilitrak error messages and the service engine light was on. I was able to return 40 miles to my home town with no further incidents. I was able to get my truck into the Chevy dealer on the 30th. The service rep recognized my description immediately as a "throttle sensor" failure. It was repaired under warranty. There have been no further incidents. My concerns are dual: First, only luck and years of emergency vehicle operation training enabled me to avoid being hit from behind by the following truck when my truck unexpectedly and without warning lost power. An impact would have likely be life threatening considering the speed and proximity of two trucks. Second, subsequently, I have found multiple internet reports of this issue going back several model years and my service paper work indicates a GM service bulletin for it exists.

- Hobbs, NM, USA

New vehicle front end suspension began to randomly violently shake at different speeds (once @ 55 mph & once @ 70 mph). The shaking was so bad that the driver could barley hold the wheel straight to avoid losing control & crashing. While this was happening the vehicle 4 wd light was blinking despite the fact that the vehicle was in 2 wd. Once driver was able to pull over he inspected the outside of the vehicle to find no mechanical issues (no flat tires, things in the wheels, etc...). driver then began driving again & the vehicle was fine as if nothing happened. Driver called onstar & they stated there were no fault codes in the system. Several days later the same thing happened while driving at 70 mph. This time the driver nearly got into a roll over accident. He was able to get the vehicle to the side of the road. Upon inspection there were again no mechanical issues. Owner drove to dealer & was told to bring back the next day. Owner inquired if vehicle was safe to drive & was told "I hope so" by the service technician. GM customer care was called & stated they were not aware of any issues with the 2011 hd vehicles. Owner took vehicle to dealer next morning & several hours later was called & told it was mud in wheels (not possible since the first time it happened there was no mud). Owners son then looked on internet to see many people having the same issue in this model year vehicle. The son then found that a tsb was issued by GM to all dealers for a sticky break pedal that when stuck (even though it appears visually to not be stuck) will at random times cause the ABS to activate violently. Tsb# pit5037B. Dealer was then told by owner about the tsb & dealer was not aware of tsb. Repair was performed & the vehicle has not shook since. Owner was suppose to be pulling a 30 ft 5th wheel with a 15 ft trailer attached to it (45 ft. Total). If they had been they likely would have been in major accident with possible loss of life due to the sway it causes when it occurs.

- Filion, MI, USA