I was driving on the highway during rush hour traffic going approximately 65 per hour and the service traction control came on and then said that engine power was reduced. It also had the engine light come on and stayed on all the way home. I then got home safely that time and shut off the car about 20 minutes later went out and all lights had gone off and was back to normal. This has happened at least a dozen times since then. Then on 6/29/15 this happened again on the highway during rush hour traffic. However this time the car said throttle disabled and the car shut off completely in the middle of the highway and I had to try and get to the side of the road without incident. After about 10 or 15 minutes the car then started back up and the lights went out and I was able to drive again. Then later in the day I returned home and tried to leave in my car and it would not start and had no power what so ever. The key also would not come out of the ignition and I just had that recall dealt with on the key. I could have been seriously injured in this last incident. This needs to be recalled and GM needs to pay for what I am out of pocket because I now had to get a rental car to work. I have read pages upon pages of complaints just like mine, which is ridiculous that this issue has not been fixed. Does it take someone getting injured or killed for GM to do something?

- Scottsdale, AZ, USA

Traction control light, and reduced engine power light came on. Lost power to the engine and had to stop. Turned the ignition off. Waited 10 minutes and started the car. Ran fine until I got home. This happened a few times before I took the car in. Found out it was an accelerator pedal position (app) sensor.

- Northfield, MN, USA

Driving on interstate vehicle suddenly lost all power and would not accelerate & quickly decelerated with any prior warning. 18 wheeler almost rear ended me. Instrument panel displayed, engine power reduced, service traction control, service stabilitrak, and check engine light. Finally exited interstate safely and shut down engine thinking it was going to blow up and after 2-3 tries to restart messages disappeared and vehicle seemed to be ok. Took vehicle to mechanic & found codes evidencing the loss of communication between the tac and or the app units causing vehicle to go into limp mode but could not get the condition to reoccur. Mechanic had to remove codes to permit to duplicate problem, could not duplicate and told me to wait until recurred. While looking for repair shop was scared it would happen again received letter from GM stating if the above condition had occurred they would fix. Called GM dealer mentioned letter they refused to repair unless the messages were present on panel, refused to look at the vehicle. Called GM customer service referencing letter, explained GM dealer refused to repair. Was told by angela issue was safety related problem but GM would not admit to safety issue. GM agreed to pay for one hour of diagnostic time to determine if vehicle qualified for repair, dealer was unable to duplicate problem, refused to repair. Called GM and was told no repair would be made even though the problem had occurred as stated in the letter and to wait until situation occurred again then not to start engine and tow to GM dealer. Was told GM would not pay for tow or inconvenience and if they could see codes they might repair problem. This is definitely a safety issue since when this occurs the vehicle loses all power and basically shuts down and will not accelerate beyond 5 mph if at all. [xxx] [xxx] [xxx]@gmail.com information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).'

- Riverside, OH, USA

The contact owns a 2009 Chevrolet Impala. While driving at 40 mph, traction control, engine power reduced was displayed across the message board. The contact independently replaced the accelerator pedal; however, the failure recurred. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was unknown.

- Reidsville , GA, USA

The contact owns a 2009 Chevrolet Impala. While driving 65 mph, the engine warning light illuminated and recurred multiple times before the vehicle stalled. The vehicle was taken to the dealer where the technician diagnosed that the engine failed. The manufacturer was notified of the failure. The vehicle was repaired. The approximate failure mileage was 76,000.

- Jefferson, MO, USA

I was driving on the highway and all of the sudden check engine light and traction control light come on. Warnings service traction control and reduced engine power are displayed and all but shuts my car off in the middle of the highway causing cars to slam on their brakes and swerve barely missing me. I get over to the side of the road and turn the car off. Then turn the car back on same messages and won't go no where. Do the same thing again only waiting longer and no messages but check engine light still on. I drive home. Next day no warnings or lights. Couple weeks go by does the whole warnings and lights and slows car down again but doesn't completely shut it down. I was in regular street traffic this time about 35mph. And now it's more frequent sometimes a couple times a day to once every day or two. This needs to be looked at. I'm reading about this problem on a lot of Impala causing major problems and wrecks.

- Tulsa, OK, USA

The contact owns a 2009 Chevrolet Impala. While driving approximately 55 mph, the vehicle stalled and the lower engine power warning light illuminated. The vehicle was restarted. The vehicle was taken to an independent mechanic where it was diagnosed that an unknown part related to the throttle body needed to be replaced. The vehicle was repaired. In addition, while driving at various speeds, the air bag warning light illuminated. The vehicle was taken to a dealer where the technician stated that an unknown part needed to be tightened. The vehicle was repaired; however, the failure recurred. The manufacturer was not notified of the failure. The failure mileage was 65,000.

- Daleville, VA, USA

While driving approximately 65 mph, the traction control and engine power reduced warning indicators illuminated. After driving a few miles with these indicators on the disabling throttle warning came on and the vehicle stalled. I managed to coast over to the emergency lane and was able to restart the car after approximately 10 minutes. This had occurred on numerous occasions and have not been able to have it successfully repaired.

- Memphis, TN, USA

The contact owns a 2009 Chevrolet Impala. The contact stated that the check engine and the traction control warning lights illuminated. In addition, a chime sounded. The vehicle was taken to the dealer where unknown repairs were performed. The vehicle was not repaired. The manufacturer was notified of the failures. The failure mileage was 120,000.

- Milford, MI, USA

The contact owns a 2009 Chevrolet Impala. While driving at approximately 40 mph, the fuel gauge went down to zero. Also, the accelerator pedal was depressed but the vehicle did not accelerate. The service engine soon warning indicator illuminated. The failure recurred three times. The vehicle was not taken to a dealer or diagnosed. The manufacturer was made aware of the failure. The VIN was included in NHTSA campaign number: 14V355000 (electrical system). The failure mileage was approximately 115,000.

- Henrico, VA, USA

We received a letter saying this year and model have a poor solder connection that causes reduction in engine power and traction control failure. Our car has this problem. However, Chevrolet will only pay for the fix if it is under warranty and has less than 120,000 miles. We believe that most six year old cars have more than 120,000 miles and Chevrolet is just covering themselves from lawsuits with this letter. If they soldered something improperly they should fix it regardless of the milege on a vehicle.

- Millville, NJ, USA

While driving on the highway at 55 mph the car lost power and displayed "reduced engine power." I lost complete power and luckily was able to coast to the shoulder. It was very scary and very dangerous.

- Rochester, NY, USA

While on my way home from work on a major highway, message lit up saying engine power is reduced, service traction control, then said starting disabled and the engine shut off mid highway with no time to react. I was almost hit by several cars, tractor trailer, and buses. I had no power steering, nothing. I have 5 children who are often in the car with me and this created a mess of traffic and could have killed people. After being scared out of my mind and stuck half in a highway lane for 5 min with traffic swerving, the car started back up with no issues and I continued home. No sign of anything today, however I am reading thousands of complaints online from other Chevy Impala owners who state they are experiencing the same issues and it comes and goes and have tried everything to fix it and it still happens every so often sometimes more than others. Someone is going to lose a life.

- Rensselaer, NY, USA

The car states service traction control-engine power is reduced. While driving the highway the car completely shut off and had to wait about 10 minutes before being able to start it again. I drive highway daily and have a (xxx) year old son that rides with me this is a safety hazard for the both of us. *trparts of this document have been redacted to protect personally identifiable information pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Bennet, NE, USA

The contact owns a 2009 Chevrolet Impala. The contact stated that the check engine light, the service traction control and the check throttle assembly warning lights illuminated as the vehicle stalled. The vehicle was taken to the dealer where the throttle body, the traction control modules were replaced and reprogrammed but the failure persisted. The failure mileage was 142,000.

- Flint, MI, USA

I was just getting off of work and on my way to grab something to eat. As I began to make a left at a traffic light the service traction and reduced engine speed light came on. I could not go more that 30 mph and it began jerking so much that I thought the car was going to shut off. I haven't driven it since because I still have to fit it. This is my only transportation and if I was on the freeway it could have been a huge accident because the car just dropped in speed with no warning. I've seen that a lot of people have this issue. Is GM looking into this. This is something they should fix with no charge esp if its happening to a lot of people.

- Chico, CA, USA

The contact owns a 2009 Chevrolet Impala. The contact stated that while driving at approximately 40 mph, the vehicles speed reduced after the engine power warning light illuminated. The failure recurred on several occasions. The vehicle was not diagnosed or repaired. The contact received notification of NHTSA campaign number: 14V355000 (electrical system) however, the part needed to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the failure. The approximate failure mileage was 65,000. Updated 4/6/15

- Tucson, AZ, USA

I own a 2009 Chevrolet Impala. I was driving on the highway at 65 mph when the check engine light, traction control light and engine power reduced light came on. A few minutes later, in heavy traffic it said engine shutting down and there was a short countdown displayed before the engine died completely. This is very dangerous and I am lucky to have been able to get over to the shoulder without getting hit.

- Ashland, MA, USA

While driving about 35 mph, my car instantly reduced speed and the traction control and powered reduced to engine light displayed. My car reduced speed to about 10 mph and I couldn't accelerate anymore. I began coasting. I drove directly to the dealership and was charged $400 to "fix" the problem.

- Lagrange, NC, USA

I have been having the service engine light come intermittently along with the service traction control light. I have had a technician look at this for me and advised that the throttle control sensor (accelerator pedal) is going in and out. The accelerator pedal is connected to a sensor that drives the throttle on the engine. When this happens intermittently the vehicle looses engine power and traction control.

- Flushing, MI, USA