Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.

Print this page


really awful
Crashes / Fires:
5 / 0
Injuries / Deaths:
9 / 0
Average Mileage:
79,148 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.

2009 Chevrolet Impala engine problems

engine problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2009 Chevrolet Impala:

Unsubscribe any time. We don't sell/share your email.

2009 Chevrolet Impala Owner Comments (Page 2 of 7)

« Read the previous 20 complaints

problem #118

May 102015

Impala 6-cyl

  • 58,970 miles


My car shut down on me on May 15 2015.service traction control and reduced engine power message appeared. I managed to drive the car home at slow speed.this is a safety issue. I have read reports that similar problems have appeared on other 2009 Impala. Some reports said the car shut down completely in fast moving traffic.I had my own mechanic look at the car and the part that needed to be replaced was thea.I.R. system check valve.I later received a notice from Chevrolet about another problem that could cause the car to shut down unexpectedly. (app) sensor accelerator pedal position sensor.I believe a recall should be issued for these problems because of the potential for accidents on the highway.also, Chevrolet did not cover the cost of the repairs to the a.I.R. pump. Thank you

- Cheswick, PA, USA

problem #117

Jun 162014


  • 74,586 miles
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

problem #116

Sep 152011


  • 49,000 miles
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

problem #115

Apr 022015


  • 62,000 miles


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 reoccurred. 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 occured 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. Leo nelson 937-554-9778

- Riverside, OH, USA

problem #114

Oct 012013


  • miles
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

problem #113

May 232015


  • 76,000 miles
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

problem #112

May 012015


  • 112,000 miles


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

problem #111

Jun 152010


  • 65,000 miles
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

problem #110

Feb 042014


  • 78,000 miles
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

problem #109

May 182015


  • 120,000 miles
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

problem #108

May 182013


  • 115,000 miles


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

problem #107

Nov 012014


  • 185,000 miles
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

problem #106

Apr 142015


  • 122,000 miles
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

problem #105

Apr 132015

Impala 6-cyl

  • 93,000 miles
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

problem #104

Apr 032015


  • 106,000 miles
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 3 year old son that rides with me this is a safety hazard for the both of us.

- Bennet, NE, USA

problem #103

Jan 292015


  • 142,000 miles
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

problem #102

Mar 102015

Impala 6-cyl

  • 129,000 miles
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

problem #101

Aug 012012

Impala 6-cyl

  • 65,000 miles
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

problem #100

Feb 182015

Impala 6-cyl

  • 160,000 miles
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

problem #99

Feb 132015


  • 67,000 miles
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

Read the next 20 complaints »

Not what you are looking for?