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

10.0

really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
82,569 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 3 of 5)

« Read the previous 20 complaints

problem #58

Aug 062013

Impala 6-cyl

  • 56,000 miles

A D V E R T I S E M E N T S

During normal conditions warning lights flash "service traction control" along with ABS light. There is a grinding noise in the front left side wheel. Also seat belts light flash. Already replaced accelerator pedal sensor.

- Brawley, CA, USA

problem #57

Apr 042014

Impala

  • 64,000 miles
The contact owns a 2009 Chevrolet Impala. The contact stated that while driving at various speeds, the service traction control and the engine power reduced warning light illuminated. In addition, the vehicle stalled. The vehicle was taken to a dealer where the technician diagnosed that the accelerator pedal and the position sensors needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure. The failure mileage was 64,000.

- Marion, AL, USA

problem #56

Jun 302014

Impala 6-cyl

  • 70,352 miles
Accelerator pedal position sensor app went out. After checking with several car service departments they said I should report this. Lots of people with this same car our having this problem.

- Columbus, OH, USA

problem #55

Dec 172013

Impala

  • 90,000 miles

A D V E R T I S E M E N T S

I was driving on I95 merging onto 175 in columbia, md, my speed was 65mph. My "service traction control" light and "reduced engine power" light came on and my car shut completely off. I had no control over the car, could not apply brakes. I put the car in park and turned the ignition switch to off for a few minutes. Luckily there wasn't any traffic behind me cause they would have hit me and killed me. I waited about 5-10 min turned the car on proceeded to my destination. The check engine light stayed on. I called the service department at bob bell Chevrolet on kane street in baltimore. I was several miles from there they couldn't come get the car so I drove it to them. They had my car approximately 2-3 days and could not replicate the incident. Since this time it has happened 8-10 times or more since May 11, 2014 I've called the service department and was to continue to drive it, they can look at it, no codes registered in December when they looked at it so they don't know what's wrong. They want me to bring my car in but don't want to give me a rental. This is too dangerous. I am scared everytime I get behind the wheel of my car.

- Baltimore, MD, USA

problem #54

Jan 182013

Impala 6-cyl

  • 65,500 miles
I was on highway one evening and my cruise control was engaged. My power went out completely on the car. I immediately noticed that the car shut down and I was able to coast to the side of the highway. After gathering my bearings, I was able to turn the car back on and drive off the freeway. It was determined that my oil was low (no warning light). Prior to this incident, I was going down hill on a local street when my warning system came on and indicated that I had reduced engine power and traction stability control issues. After going to the dealer, it was determined that my oil was extremely low, however no leaks or cause was ever found. Prior to this, I had to get my accelerator sensor replaced because the reduced engine power warning came on. It was not covered under warranty and I had to pay several hundred dollars to 'fix' the issue. As recently as yesterday, June 16, 2014, I turned my car on and the reduced engine power and traction control warning came on. I immediately turned the car off and checked the oil. It was low but no warning light to indicate this issue came on (same as in the past). I faithfully get my oil changed every 3,000 miles or 3 months, whichever is first. My oil life was at 54% yesterday and I did take it in for an oil change this morning. It is obvious based on others experiences, that this is a known issue amongst 2009 Impala owners. The fact that I did not receive a warning when I was on a major highway and my car shut off while still in motion, is extremely scary and it traumatized my son tremendously. I am hoping that some type of investigation will be initiated because it could result in serious injuries or even death.

- South Euclid, OH, USA

problem #53

Jun 152014

Impala 6-cyl

  • 80,775 miles
Climbing up alpowa grade on highway 12 in Washington state, the check engine light came on, "engine power is reduced" came on in the odometer window. Approximately 35 miles later, beyond Dodge junction and before starbuck turnoff, there was another message flashed in the odometer window, "ignition switch disabled. Service engine" the engine shut down, and the power steering became super sluggish. The car slowed down, and we were able to get stopped on the side of the road. At this point when we got the car running again, the cruise control would not work. When we reached walla walla, Washington, we stopped at O'reilys auto parts, had one of the parts specialists come out and check what the code was on the computer, and found out it was the electronic throttle sensor that is defective. This is a Pilot car escort vehicle, making the hazard even more dangerous, because had I been traveling with an oversized load, I could have been hit by the semi pulling the load, or I could have impacted the rear of the load, depending if I were following or leading. Also, had that happened while on a job, the load would have had to stop until another Pilot car escort vehicle could arrive to continue with the load. This is a dangerous thing to have shut off when driving in areas that are not straight. Unable to control steering, brakes less than responsive, and possible hazards of vehicles oncoming or following us could become impact hazards. [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Lewiston, ID, USA

problem #52

Jun 112014

Impala

  • 69,921 miles

A D V E R T I S E M E N T S

Last night, I started up my car and immediately the car started to shudder pretty hard. My car started chiming and a service traction control showed up on my dash, followed by an engine power reduced. The light indicator for my tc was lit. I immediately turned the car off and tried to restart it. The same thing happened again. I turned it off and waited 2 minutes before restarting. It started fine, with no bad indications. The car also drove normally. A few hours later as I was starting home, it happened again. My car was still parked as before when the indications showed up. Shut off and restarted and it cleared out. No problem once I started driving. This morning was no different. So far, this only has happened when I was starting my car up. I have been fortunate that this hasn't happened to me while the car was in motion- yet. Other people with this problem haven't been so fortunate. There has been no bad weather at all. Dry as a bone. I bought this car in 2010 knowing it used to be a rental. I have had no problems with it until now. I took my car into my Chevy dealership, who thought it might be the throttle body sensor. They are ordering the part in, but I'm still skeptical if that is really what is causing it. I have heard the sensor on the hub assembly could cause this, as well as the accelerator pedal sensor. From reading multiple forums, many owners have had scary experiences with the car decelerating on freeways or other dangerous places that could result in wrecks and personal harm. They had taken their cars in multiple times and shelled out thousands trying to fix this phantom ghost problem. Frankly I am amazed there has been no recall for this. I am moving to ca, and I'm driving there by myself in less than two weeks. I can't have my car try to do me in right now, nor do I have endless amounts of cash to fix a mech's guess. Warranty does not cover this.

- Oak Harbor, WA, USA

problem #51

Jun 102014

Impala 6-cyl

  • 97,800 miles
I was accelerating to merge left into a highway. Weather was dry and hot. Traction control light came on along with engine light car shows message: "service traction control", "engine power reduced". car takes longer to accelerate. After I turned off the car and turn it on, traction control light disappeared. Engine light remains on.

- Denton, TX, USA

problem #50

May 132014

Impala 6-cyl

  • 96,000 miles
I was accelerating and turning left at the same time after a stop sign into a 40 mph road. Weather was hot and dry. Traction control and engine light came on immediately. Car shows message: Service traction control, engine power reduced.

- Denton, TX, USA

problem #49

Jun 012011

Impala 6-cyl

  • 80,000 miles
This is a known problem with Chevy Impala, however GM refuses to do a recall. Someone will die again at their hands. When driving the car, all of a sudden a "service traction control" message pops up, then "reduced engine power", then the check engine light goes on. The car immediately loses power and the speed is cut almost in half very abruptly. One time, the car completely lost all electrical and power while traveling at 65mph on the interstate. I was stuck with no power steering, no power brakes, etc and had to navigate to the side of the road without killing myself. I have finally figured out what the problem is due to the many forums that are popping up with other owners describing their fixes. Turns out it is the accelerator pedal position sensor. I have replaced it myself and the car is now running fine. I am not happy with Chevrolet playing with my safety and my life by not recalling this part. As I mentioned earlier.... people will die, I almost did.

- Wisconsin Rapids, WI, USA

problem #48

Jun 032014

Impala 6-cyl

  • 98,000 miles

A D V E R T I S E M E N T S

Service traction control message along with reduced engine power message. Car jerked/hesitated upon stopping and starting at intersection. Reduced speed automatically and couldnt speed up.

- Burnsville, MN, USA

problem #47

May 052014

Impala

  • 84,000 miles
The contact owns a 2009 Chevrolet Impala. The contact stated that the acceleration sensor was malfunctioning which caused the engine to idle. The contact mentioned that the check engine and traction light illuminated. The vehicle was taken to an independent mechanic where the technician diagnosed the acceleration sensor needed to be replaced. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was 84,000 and the current mileage was 86,490.

- Glendale, AZ, USA

problem #46

Aug 232013

Impala

  • 70,000 miles
The contact owns a 2009 Chevrolet Impala. The contact stated that while driving approximately 70 mph, the engine warning indicator illuminated then the engine stalled. The vehicle was able to be restarted 20 minutes later. The vehicle was taken to an authorized dealer for diagnosis. The technician detected that the accelerator pedal, accelerator position sensor connector, and fuel vent solenoid was faulty. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 70,000.

- Douglas, MI, USA

problem #45

Jun 142010

Impala 6-cyl

  • 40,000 miles
I was driving on the freeway at approximately 70mph, my check engine light came on. About 5 seconds later, my service traction control came on. As I kept driving, I lost power to my engine. Finally, my engine was disabled and I couldn't drive anymore. Luckily, I was able to pull over. After 5 minutes, I was able to start up my car. I replaced the throttle body, but my car still keeps doing this. This is very unsafe. GM needs to recall its cars.

- Ontario, CA, USA

problem #44

Feb 142014

Impala 6-cyl

  • 74,500 miles
I was driving home on the freeway at about 70 mph and the service engine light went on with it saying "reduced engine power" on display. About 10 seconds later I could not accelerate, the car began to start slowing down and I lost ability to maneuver the steering easily as the steering wheel locked up. I was able to pull off on the side of the freeway and I had to turn the car off and wait about 10 minutes for the problem to clear up.

- Murrieta, CA, USA

problem #43

Sep 142013

Impala

  • 94,600 miles
The contact owns a 2009 Chevrolet Impala. The contact stated that while driving approximately 75 mph, the vehicle suddenly stalled. The contact was able to restart the vehicle after approximately 30 minutes and the vehicle operated normally. The vehicle was towed to the dealer where it was diagnosed that the throttle body switch was faulty. The throttle body switch was replaced and the defect was remedied. The manufacturer was notified of the failure. The failure mileage was 94,600.

- Green Valley, AZ, USA

problem #42

Feb 272014

Impala

  • 48,000 miles
The contact owns a 2009 Chevrolet Impala. The contact stated that while driving 60 mph, the vehicle decelerated to 20 mph as the decreased power engine light illuminated. The failure was experienced several times and at various speeds. A local mechanic performed a diagnostic and located the failure at the throttle positioning sensor. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure and current mileage was 48,000.

- Gilbert , AZ, USA

problem #41

Feb 192014

Impala 6-cyl

  • 104,122 miles
Was driving car and traction control light came on and then check engine light. Lost power and brakes. Car was able to stop but very hard. Glad nobody was in front of me or I would have it them. This is very dangerous and I think there should be a recall on the throttle body and sensors. I did have it fixed but had to take it to several dealers to figure out if it was the accelerator pedal or the throttle body.it was the whole throttle body unit.

- Janesville, WI, USA

problem #40

Jan 222014

Impala 8-cyl

  • 80,020 miles
The problem started in January of 2014. As I write this I want to say that I have read all the blogs on my complaints and see that I am not alone which forces me to ask GM why is it that we all see the elephant in the room and you people are ignoring it. Suffice to say this problem is a safety issue would be the understatement of the century. When will GM step up to the plate and make these issues a priority so there customers don't have to waste time writing complaints like this one. It's really very simple my engine light is on along with the stabilitrak light as well as the car losing all power. Now if GM feels this is not a good enough reason to create a recall I fail to see what is. People just like me have been complaining about this for years and GM does nothing. Along with GM being at fault the dealerships are raping there customers while they go thru a laundry list of items they think might be the problem for these codes. I for one cannot afford the dealership prices nor will I pay these so called experts good money after bad to try and fix problems that they really have no idea as to what's causing them. I originally bought this Chevy B/C I wanted an american car for a change, man was I wrong. As soon as I fix this heap I will sell it before anymore lights go on and go right back to Honda where at least I know they stand by there cars and it runs way into the six figures before any real problems occur. I'm one of the little guys that bailed out GM and by the way were still paying taxes for that bailout. How about it GM, don't you care about us at all?

- South Amboy , NJ, USA

problem #39

Feb 102014

Impala 6-cyl

  • 57,000 miles
What happened is the vehicle traction control triggered and reduced the cars functionality and speed. It cleared itself, but what concerns me is this problem is prevalent in GM Chevrolet vehicles ranging from 2005 to 2011. It is listed many times here in your data base to your organization. Our lives and safety are involved here. Focusing on charging a fee to do an investigation is deplorable. Lives are at stake here. This should not be another american after the fact occurrence or event. What happened to proactive responsibility. These american car makers produce junk cars and the consumer constantly get stiffed with lemons. States lemon laws? nothing but american lemons are rolling off of the production lines. You think, this may be why other countries will not buy our products. There is no reliability in what is produced or manufactured and the customer service is lip service. Non - existent with these car dealers and pure sales rhetoric. Your site reads: The information you provide will be used to identify potential safety-related defects or determine the adequacy of existing safety recalls. I can't afford the repairs, pay for an investigation as well. I am not pleased with how the ball keeps getting passed or dropped. NHTSA these poorly produced weapons weigh tons. Rolling down the poorly maintained highways and streets of this country endangering us all life and limb. My vehicle has the same problem with the traction control that forces my car to brake, pull to the right and slow enough to endanger my well being. I'm truly scared and concerned here and the repairs and code lights aren't reliable. Only the repair shops are winning. The problem keeps repeating after thousands are spent to keep the car running. I need this car for work. If it cant get me there then they will come and take the junk back I am trying to maintain. Thank you

- Tracy, CA, USA

Read the next 20 complaints »

Not what you are looking for?