10.0
really awful- Crashes / Fires:
- 3 / 0
- Injuries / Deaths:
- 1 / 0
- Average Mileage:
- 99,266 miles
About These NHTSA Complaints:
The NHTSA is the US gov't agency tasked with vehicle safety. Complaints can be spread across multiple & redundant categories, & are not organized by problem. See the Back button — blue bar at the very top of the page — to explore more.
Had issues with my 2007 Impala 3.9L stalling and reducing power on my wife, and at times almost leaving her in or on the road. I have replaced the throttle body, throttle peddle ( twice ) and had the car flashed at the local GM dealer. Now the car not only reads reduced engine power it read starting disabled service throttle and died while she was driving down a busy highway during rush hour.. causing her to almost be involved in a bad wreck. This seriously needs to have attention of whoever at GM is over safety, cause this issue will end up in a really bad situation if or when someone ends up seriously hurt or killed. I mean you really need to program them to slowly reduce power, not just tell you then shut off completely and have the driver fight and panic to get off the road through traffic, while not getting run over in the process. But if there is a fix we need to know.
- Marshall, TX, USA
While driving my car to work on Tuesday 11-12-2019 at 6 am in the morning, my battery light came on then, message displayed battery saver active, ac hot shut off, traction on and reduce power, everything came on in dashboard and about 10 minutes later the whole system shut down, and car will not start back up. Had to get someone to jump start in order to start car back up it will run a period of time and it happen again even after replacing a new battery, starter and alternator I also taken it to dealer ship to run diagnosing test as well and they charge me for service although they said they didn't find anything wrong with charging system at all.but this occur during the busy time off the day and a lot of traffic
- Louisville, KY, USA
Power steering box when checking fluid pop noise when taking off cap also changed serpentine belt still squealing stiff steering leak not detected at that time.#2 shifting from 1st to 2nd gear is very fast not normal
- Peekskill, NY, USA
Intermittent traction light and ABS light poor acceleration
- Peekskill, NY, USA
My wheel started to cluck every time I drive, then my speed want go as it ahould
- Houston, TX, USA
Well my 2007 Chevrolet Impala want drive or move so I don't if it's the transmission bad or not I need answer please it's leaking fluid and oil as well.
- Memphis, TN, USA
Takata recall while driving I keep getting a 'engine power reduced' message and my car immediately shuts off in the middle of traffic.
- Climax, GA, USA
Car randomly displays reduced engine power. On interstate reduced down to 20mph could have gotten my family killed. Researched online alot of imapala having same issue. This is very dangerous
- Lebanon, VA, USA
Engine power was reduced while I was traveling with the flow of traffic. I attempted to accelerate but car started slowing down. Took the vehicle for repair and replaced the pedal position sensor was replaced. I contacted Chevy dealership service dept and was told it's a common occurrence. Impala have a throttle sensor instead of cable. If the sensor goes out, the engine power is reduced to protect the engine integrity. In some cases, it's reduced significantly. The manufacture noted my concern but the rep would not escalate the matter. I went online to file a complaint and there is a Chevy forum with similar concerns. General motor reps reply with common responses to take the vehicle to an authorized mechanic and their concern has been noted. I was informed by representative at 800# for manufacture to call back if it happens again. Thankfully I wasn't going at a higher speed in dallas traffic. Not sure if I would have had the luxury of pulling over.
- Washington, DC, USA
Service traction control engine power reduced driving down the interstate and it dropped the speed from 75 to 40 in matter of minutes my family almost got ran over by a semi this is a serious safety issue and someone is going to get seriously hurt
- Adams, WI, USA
My issue started with my car turning over. It would not want to start first try but would turn over on the second. Some times it would start fine and others it hesitated. After dealing with this for a while my battery died after spending a little while idling. Took it to check the accelerator and the battery but both were fine. Continuing to intermittently act up when starting, it also started to show other problems. I was getting in my car to leave and it started up fine but before I could pull out of my drive way my car started shaking and showing an "engine power is reduced" message. I turned it off ran inside and when I came back out to show others the issue it started without a problem and did not have the message any more. Still have the turnover hesitation, I continue to drive it however it started to shake and show the same engine power reduced message as I pulled into my apartment complex. Also has done this when leaving and turning into a main road, causing us to pull over and wait to start it again. Took it to get codes tested again and it pulled up a didn't match code. After doing research tons of others had the same problem and worse. Many showed the solution to be replacing the throttle body and throttle position sensor which we did. Slight hesitation on the start up but took it around the block no issues. Went to test it on the highway and before we even made it the engine power reduced came on and car shook again. There and so many others that have had this problem and many have not found the fix. Extremely disappointing since we cannot return the part after it's been installed. I am worried to take my car out and drive it on the highway because I do not want this to happen while I'm at increased speeds.
- Wichita, KS, USA
The contact owns a 2007 Chevrolet Impala. On several occasions, while driving various speeds, the vehicle stalled. The contact stated that the failure recurred several times. On numerous occasions, the vehicle failed to start. The dealer diagnosed that there was an electrical system failure and also the throttle body needed to be serviced. The vehicle was repaired on three separate occasions, but the failure recurred. The vehicle was included in NHTSA campaign number: 14V355000 (electrical system). The manufacturer was not notified of the failure. The approximate failure mileage was 112,000.
- Jacksonville, FL, USA
The contact owns a 2007 Chevrolet Impala. When the accelerator pedal was depressed, the vehicle shifted and jerked. The contact turned the traction control button off, but the vehicle failed to move. The traction control and engine indicators illuminated off and on. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was 160,000.
- Flint, MI, USA
Traction control light came on and cause my car to reduce power
- Chicago, IL, USA
Last may I was driving my car from work going approximately 40 mph a message came on the information screen. Something about going over 160mph. The car suddenly slowed, couldn't seem to find the proper gear. At the same time the speedometer was going up and down showing 60, 30, 80, 0. then it cut off. I put the rolling car into neutral and started it. It fired up immediately. I put in gear and continued until it was safe to stop. Let engine cool off and drove home. The speedometer continued to fluctuate, it also cut off and flashed the message again. Called dealership next morning and took in. They came back with diagnosis of transmission failure, need to replace. I shelled out $4000 for the transmission, now it is slipping. I drove home today and that message flashed across my screen along with the transmission struggling to find the proper gear. The speedometer was moving up and down. The speedometer was replaced when the transmission was replaced. I have contacted the dealership to schedule an appointment. I also made a formal complaint to GM.
- Hyattsville, MD, USA
My 2007 Impala recently shut off on me wouldn't move in drive as I sat in the middle of the highway with my kids it has been jerking since I hit 135000 miles it has a strong odor when I cut my ac on in as my car is running the engine has a strong odornow my car want drive at all an I see it has 3 recalls on it please let me what's going on with my car because that was so scary having break down on me in traffic.
- Charlotte, NC, USA
The contact owns a 2007 Chevrolet Impala. The contact stated that while driving at 60 mph, the accelerator pedal was depressed but the vehicle failed to accelerate as the reduced engine power error message displayed. The vehicle was taken to a dealer where it was diagnosed that the accelerator pedal needed to be replaced. The vehicle was repaired. However, the failure recurred. The manufacturer was notified of the failure. The failure mileage was 140,000.
- Chicago, IL, USA
The contact owns a 2007 Chevrolet Impala. While traveling at 40 mph, the vehicle began to accelerate without the accelerator pedal being depressed. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 69,000.
- Arona, OR, USA
While driving my vehicle, the traction control light and check engine light came on...then a message stating "engine power reduced" came on. My car dropped the speed from 60 to 20, on the highway. It happened again a month later and I was told that my accelerator pedal needed to be replaced. This happened again in March of this year, and I was told my fuel pump had gone out. Now it has happened again this morning, and the mechanic doesn't know what's wrong with it because it happens intermittently so he can't diagnose it unless it does it while the car is in his possession.
- Memphis, TN, USA
- Irving, TX, USA