2011 Chevrolet Impala acceleration problems

Filed Aug 31, 2024 · Acceleration · NJ

After getting into my parked car and starting it, the Stabilitrak warning message came on my display. This is the 2nd tike that this occurred. The first time it occured, my mechanic diagnosed it as a failed throttle body, which I replaced myself, (easy removal/installation). Now, a couple of months later, it occurred again. After doing some online research, it seems as though the position sensor on the accelerator pedal may be at fault. A lot, if not most cars today have a "fly-by-wire" system which replaces cables and such with sensors and motors. So, the accelerator, (gas), pedal controls the movement of the butterfly valve on the throttle body by sending a signal to the motor. I'm going to replace that... about $140 or so. I saw a YouTube video and the removal/installation is fairly easy. A lot of people are having this issue; maybe a recall is needed?

Filed Jul 5, 2021 · Acceleration, Brakes · OK

Brake assist, traction control, stablitrack, and ABS lights continually coming on. When breaking while making a turn the breaks slip or give and then suddenly grab hold causing a grinding sound. Car wobbles while these lights are on causing a noticeable change in stability and control.

Filed Dec 28, 2019 · Acceleration, Steering · 105,000 miles · WI

I was driving my car and suddenly it flashed across the screen service stabilitrak, then service traction control system, then reduced engine speed. This caused my vehicle to slow way down out of no where from 70 to less than 30, and made steering near impossible. I have my two children I drove around and I'm afraid to even drive because if there's an accident with them in the car because my cars slowing unexpectedly someone will be paying for this. This is a huge safety issue and I see all over it is and it needs to be fixed!

Filed Oct 26, 2019 · Acceleration, Driver assistance · 111,994 miles · MA

On 1/29/16 my car died and towed to dealer where I was told I need a transmission. The car only had 69000 6months ago dash board lights lit traction control, reduced engine power service stabilitrack ABS.when I would step on the accelaretor pedal it would make a winding noise go to the floor and pop back up again. As I was driving down the highway all of a sudden I had no acceleration car had died. L pulled to the side of the road a few minutes later started up again this happened numerous times I told my son he couldn't drive the car because I felt it was unsafe. I called the gm they gave me a coupon to have the a diagnostic check on it. In sept I went to the dealer and he scanned my car for codes I was told I needed a right front hub part number 13582664, a right wheel speed sensor harness, 10340314, accelerator pedal, 84018392, and a vent valve 2085252. I can't believe a car dealers would let a person leave not informing the customer what a safety issue this is. I drove the car for a day because I couldn't afford to fix it and was trying to come up with the money again the car died on me as I went to accelerate now the car is sitting in my yard dead as a doornail. I called the dealer and explain the situation to the dealer at lannan chevrolet in woburn and I spoke with the owner and the only response I got was what do you want there's a hundred thousand miles on the car I have been doing lots of research on this particular vehicle and I'm appalled between a 2008 and a 2011 there has been hundreds of complaints about the same issue.these are safety issues where people can get killed. Out of all these safety issues there's not one investigation that has been opened in regards to the issues. The federal safety agency or gm needs to open an investigation immediately on these cars. There is a major safety issue and a recall is necessary.VIN number..(xxxxx) redacted to protect personally identifiable information pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).

Filed May 20, 2019 · Acceleration, Brakes · 78,000 miles · DE

January 2019 was driving on a very congested interstate 95 at the posted speed limit of 65. A warning popped up on my dash board.service stabil trak engine in reduced power. It was like I longer controlled my car. The speed suddenly dropped. I went from 65mph to maybe 30mph. It felt like my brakes were being applied . I became scared and almost started to panic. But because I was in the far right lane I was able to pull off the interstate. I sat there on the side of the interstate with my heart racing and my hands locked on the steering wheel so hard they cramped up. I turned off my car and removed the keys from the ignition. I thanked god I was alone in that car. I thanked god the car behind me was not tailgating me. I waited for about 5 minutes and then put the key back in the ignition and started the car up. The warning was gone but the service engine light remained on. I was scared to death to merge back onto the interstate so I put on my flashers and drove on the shoulder at 20-30mph until I got to the first exit. I made it home. I called a car repair company. They told me the sensor more than likely need to be reset. They suggested I take it to a chevy dealership service center. The next day I started my car up and all warning were gone so I did not take it to the service center. The car ran fine until today 52/20/2019. I just filled my tank up with gas. Turned it on put it in gear and drove 20feet when the same error came on . I had looked up this error on the internet. Seems lots of americans have almost been killed because a car maker has a mechanism built in to it vehicle that takes control of the speed to which the vehicle is traveling. People are spending a lot money to fix an issue that seems to not have a fix. Chevrolet is putting the lives and the lives of others on the roads in jeopardy with their stabil trak computer sensors.your failing americans

Filed Apr 2, 2019 · Acceleration, Driver assistance · 70 miles · GA

Takata the problem that is wrong with my car is the engine power reduce is always come on and when I'm on the interstate or highway my speed reduce and my car can shut off at any time while driving and it can cause a bad wreck. The problem been happen for a minute now

Filed Mar 31, 2019 · Acceleration, Driver assistance · 88,000 miles · WV

While in motion my 2011 chevy impala up a highway my vehicle dash will come up and say stabilitrak disabled traction control disabled then engine power reduced then the vehicle will begin to not steer correctly then I will have to pull over and restart the vehicle it then repeats itself after a short period of time

Filed Mar 14, 2019 · Acceleration, Driver assistance · 159,000 miles · TX

'takata recall' while driving on the highway, my vehicle will lose power, which cause the vehicle to shut down. On the dashboard, service airbag appears as well as the ABS light and lock mode comes on. The vehicle key will not turn to off mode until a few seconds. Then once the vehicle allows the key to turn to off mode, u have to wait a few seconds then the car will start with no problem and the ABS and lock signal on dashboard goes off. This has happened several times in one trip on the highway. This is not safe at all because the steering wheel also get stiff and the traction control comes on the dashboard as well. What can I do about this? Should I take my vehicle in to the dealership? The last time this problem happened to me was march 14, 2019

Filed Feb 1, 2019 · Acceleration · 206,775 miles · TX

As I was driving on the straight highway at about 70 MPH I let off the accelerator due to a car ahead of me driving under speed limit as I put pressure on the pedal it sped up but felt a slight hesitation, I thought not much of it until I see a 18 wheeler coming up fast , I put a little more pressure on accelerator to by pass the slow car in the right lane as I did this I felt my gas pedal wobble to the side w 18 wheeler still behind me I tried to speed up and make it to safety because I knew something wasn't right , just as I get back in the right lane I felt the pedal give as if it just broke off ... I kept driving to catch the next exit and to get off of the two lanes and get myself to safety but it wasn't catching speed I panticked pushed my energy lights on and kept pushing the pedal for it to go still not much help .. So I just held down the pedal ,( by this time it's almost on the floor board swinging left to right I finally get a break when an exit came up I took the exit prayed to god and looked at the pedal , to my shock it was hanging on by a few wires ...plz see to it that this gets checked that was the most scariest situation that has ever happened to me while driving thank god he was with me, I usually never complain but this I just couldn't pass up it is scary and could of been fatal . Plz take a look at this ty

Filed Jan 17, 2019 · Acceleration, Driver assistance · 139,000 miles · GA

Tl* the contact owns a 2011 chevrolet impala. While operating the vehicle, the traction control, service stabilitrak, and reduce power indicators illuminated. When the failure occurred, the vehicle suddenly decelerated. The vehicle was taken to an independent mechanic who replaced the accelerator pedal, but the failure continued. The local dealer (malcolm cunningham chevrolet, 2031 gordon hwy, augusta, ga) was notified of the failure. The manufacturer was not notified. The failure mileage was 139,000. *tt consumer stated traction control stability the engine light stay on and the engine reduce power.