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hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
60,058 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.

2011 Chevrolet Impala drivetrain problems

drivetrain problem

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2011 Chevrolet Impala Owner Comments (Page 2 of 2)

« Read the previous 20 complaints

problem #16

Jul 262014

Impala 6-cyl

  • 70,000 miles


Throttle control shut down, engine power reduced, car shut down on highway without warning.

- Dallas, TX, USA

problem #15

Jul 242013


  • 22,000 miles
Pulled into 35 mile per hour traffic and lost engine power. Warning lights and message for stabiltrac, service traction control and reduced engine power came on. Experienced reduced engine power with traffic approaching from behind. This happened with 22,000 miles in 7/2013. The engine control module and stabilizer shaft link were replaced. This happened again 2/2014 with 26,000 miles. The throttle body cover and sensor kit were replaced. Just today, 7/23/2014, it happened again with 30,000 miles. Each time it has happened pulling into 35 mile per hour traffic and experienced reduced power.

- Ravenna, OH, USA

problem #14

Jul 102014

Impala 6-cyl

  • 82,000 miles
I was driving down I-74 outside peoria il and the stabilitrac power reduced popped up on the dash and 3 seconds later it stated the anti-theft engaged and shut my car off. I almost got rear ended by multiple cars on the interstate. I was in the left lane and barely made it to the side of the road. I emailed GM and they have not gotten back to me yet. I emailed them the same day it happened.

- Mackinaw, IL, USA

problem #13

Jun 162014


  • 89,000 miles


The contact owns a 2011 Chevrolet Impala. While driving 70 mph, the vehicle decelerated independently. The dealer was unable to diagnose the cause of the failure. The vehicle was not repaired and the manufacturer was notified. The failure mileage was 89,000.

- Richmond, CA, USA

problem #12

Jun 072014


  • 100,000 miles
The contact owns a 2011 Chevrolet Impala. The contact stated that the vehicle made a loud noise from the engine compartment and the transmission began slipping. The contact mentioned that the vehicle also stalled. The contact was able to restart the vehicle. The vehicle was taken to the dealer. The manufacturer was notified of the failure. The approximate failure mileage was 100,000.

- Atlanta, GA, USA

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problem #11

May 042014

Impala 6-cyl

  • 79,000 miles
Cranked up the car to go home. Stability light and "engine" light was on. While on the interstate passing a truck the engine died. Display center indicated service stability track and reduced engine power. Coasted over to rt. Shoulder. Car would not restart for about 30 sec. Cranked it up and made it home. Trouble code is P2138 which seems to indicate the throttle position sensor D/E voltage. Will take to dealer in am.

- Mccomb, MS, USA

problem #10

Feb 132014

Impala 6-cyl

  • 54,000 miles


When slowing to make turn "traction" warning light flashes vehicle does not want to accelerate when pressing gas pedal and then just takes off suddenly.

- Fredonia, NY, USA

problem #9

Dec 232013


  • 43,400 miles
I started my car after a cold night and immediately got a "service stabilitrak", "engine power reduced", and "service trance ion control" messages. The car had an extremely rough idle and then would not accelerate to more than 25 mph. I returned home and made an appointment at the dealership. Later, I was ready to take the car into the dealer and it started fine with no error messages or check engine light. I called the dealer and they said it must have been a computer error that fixed itself. Well, it's a week later now and I am having the issues again except restarting the engine does not fix it anymore. This is a serious issue and needs to be resolved by GM and not cost the many people experiencing this issue hundreds of dollars to fix!

- Essex, VT, USA

problem #8

May 142012


  • 50,000 miles
While driving down the road, the car will violently jerk, and the dashboard will flash, reduced engine power. Now car won't move at all. We have replaced the gas pedal twice! Chevrolet needs to address this issue. I am seeing it all over the internet.

- Woodgate, NY, USA

problem #7

Nov 242013

Impala 6-cyl

  • 43,110 miles
This is the second time this has happened. Less than a year ago, we received a service stabilitrac/service traction control/engine at reduced power message and speed dropped from 40 mph to 5 mph. We brought it to the Chevrolet dealer and a traction position control sensor was replaced. Today, on 11/24/13, we were driving 15 mph in a parking lot and received the same message resulting in the same problem. This is a safety issue due to the fact that the vehicle essentially stalls out with little to no power and nearly caused a collision at an intersection. When will NHTSA force GM to recall and fix this issue? this is extremely dangerous.

- Durham, NH, USA

problem #6

Jul 182013


  • 56,000 miles


While travelling on the highway, in the rain, the power to the engine suddenly and drastically slowed down. The warnings showed up on the screen" stabilitrak, traction control, engine power loss.

- Winder, GA, USA

problem #5

Jun 082013

Impala 6-cyl

  • 43,700 miles
When driving, noticed on the freeway, it wasn't smooth at times. The transmission's shifting was pretty rough. No indication of any issues popped up on dashboard. When arriving at a freeway ramp, it felt like I was hydroplaning, but on gravel. Then, noticed when pressing the accelerator, was not going anywhere, but felt like I was in neutral. Was able to pull over and take a look... transmission fluid was fine... nothing popped up on the dashboard. Nothing! the indicators for tires, oil, etc were showing info, but nothing to indicate it had died or if there were any engine issues. Had brought it to the dealership where I had bought the car 11 months ago. The mechanics were saying that they have never seen such an huge transmission failure before. They would have to replace the whole thing.

- Seatac, WA, USA

problem #4

May 012013


  • 49,000 miles
Starting from stopped position, transmission slips when pressing gas pedal. No error codes. Also when coming to a complete stop, after stopping, the vehicle jerks, like it is going from neutral into first gear.

- Grand Prairie, TX, USA

problem #3

Dec 262012

Impala 6-cyl

  • 67,000 miles
My 2011 Impala is reading "service throttle. Reduce engine power" and then proceeds to shut down. Even after replacing accelerator pedal position sensor, vehicle is still reading same errors. This is very dangerous because there is no limitations to when the vehicle shuts off. After extensive research, a lot of people are having the exact same issue and Chevrolet hasn't attempted to do anything about it. Please help!

- Chicago, IL, USA

problem #2

Sep 172012


  • 51,000 miles
The contact owns a 2011 Chevrolet Impala. The contact stated that while driving approximately 65 mph all the warning lights illuminated and indicated that the engine was loosing power. The contact pulled over and waited a few minutes before restarting the vehicle. The vehicle was later taken to a dealer who diagnose that the app sensor and modulator failed and needed to be replaced. The vehicle was repaired for both components. Approximately 1 month later the contact was driving approximately 65 mph and the vehicle started to slow down while he was pressing on the accelerator pedal. After pulling over the vehicle was unable to accelerate but the RPM's were rising. The vehicle was towed to the dealer diagnosed that the transmission failed and needed to be replaced. The vehicle was not repaired. The manufacturer was contacted and they offered no assistance. The failure mileage was approximately 51,000 and the current mileage was approximately 52,000. The VIN was unavailable.

- Orlando , FL, USA

problem #1

Apr 012011


  • 500 miles
The contact owns a 2011 Chevrolet Impala. The contact stated the vehicle would surge after it shifted into gear. The vehicle was taken to the dealer who was unable to duplicate the failure. The manufacturer was made aware of the failure but did not offer any assistance. The vehicle was not repaired. The failure mileage was 500 and the current mileage was 1,185.

- Brookline , MA, USA

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