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hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
54,066 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

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2009 Chevrolet Impala Owner Comments

problem #7

Dec 052016


  • 153,000 miles


The contact owns a 2009 Chevrolet Impala. The contact stated that the vehicle had a fractured solder device, which caused the accelerator pedal to malfunction. The dealer diagnosed that the accelerator pedal was replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 153,000.

- Indianapolis, IN, USA

problem #6

Aug 032015

Impala 6-cyl

  • miles
2009 Chevrolet Impala. Consumer writes in regards to accelerator pedal position sensor issues. The consumer did not agree with Chevrolet when they stated to let the failure occur first, then they will fix it.

- Florissant, MO, USA

problem #5

Sep 092009

Impala 6-cyl

  • Automatic transmission
  • 10,600 miles
The contact owns a 2009 Chevrolet Impala. The contact stated while driving 60 mph, the traction control warning light illuminated and the engine stalled. The contact managed to merge over to the emergency lane. After multiple attempts the vehicle restarted and was taken to a dealer for a diagnosis of the failure. The technician diagnosed that the throttle and accelerator pedal needed to be replaced. The manufacturer was not notified of the failure and the approximate mileage was 10,600. Updated 11/21/14 updated 5/7/2015

- New Oxford, PA, USA

problem #4

Apr 042014


  • 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 #3

Jun 272014

Impala 6-cyl

  • 100,630 miles
The contact owns a 2009 Chevrolet Impala. While driving approximately 55 mph, the traction control and the check engine indicators illuminated. The vehicle began to decelerate and then stalled. The dealer stated that the failure was due to the electronics in the accelerator pedal. The vehicle was repaired and the manufacturer was notified. The failure mileage was 100,630. Updated 08/11/14

- Orleans, IN, USA

problem #2

Apr 272012

Impala 6-cyl

  • 50,232 miles
I-40 East bound; 60 mph; coming down a 4 to 7% grade through the smokey mountains, North Carolina side; 1st error: "service traction control, reduced engine power, service engine. Approximately 5 minutes later 2nd error: "starting disable, service throttle" lost all power to vehicle. A very dangerous and frightening event having no control of your speed, steering, and braking trying to get off to the side of I-40 with the type of grade, tractor trailer trucks that can not slow down fast enough to let you over. We were very.... very fortunate with our outcome. Had to be towed to a local dealership. Ran diagnostic; error codes P2122, P2138. Dealership replaced the component: Electronic accelerator pedal

- Madison, TN, USA

problem #1

Mar 302010


  • miles
I rented a GM Impala from enterprise rental car in florence, ky on March 28th. The gas pedal became detached from the bracket during normal driving. On March 28 or March 29th. It was reported to enterprise the evening of March 29th when it was discovered. Enterprise rental failed to take any action in a timely manner until the vehicle was returned. This is a safety complaint against GM for the gas pedal being able to fall off and enterprise rental for failure to react to a safety hazard condition. Luckily there was not accident related to this product failure.

- Union, KY, USA

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