general problems of the 2009 Chevrolet Impala - part 2

On my commute to work on the interstate my Impala shut itself off. I was in the left lane when the car showed the reduced engine power on the information panel, it then fully disengaged all engine power and powersteering. Being in the outside lane I had to maneuver my Impala through the heavy traffic and almost caused numerous accidents trying to squeeze to the shoulder. I then coasted off into the grass almost into a large ditch but I slammed on the brakes hard and went into a skid coming to a full stop. I scanned the car with my obd2 scanner, it read p0601.

I was driving down the highway when traction control and check engine lights came on. Car went into reduced power mode and finally died while still moving. Lost power steering. Then my car shut down, had a very difficult time getting it off the road. There seems to be many complaints about this. With this happening on a very busy highway, myself or my daughter could have been killed by oncoming traffic, due to car shutting down. Cost of tow and service 350. 00 I also have had the car put in for the seatbelt and airbag lights going off, since being in the Chevrolet dealer, the lights never go off.

This the second time this has happened. Wife was driving down the freeway when traction control and check engine lights came on. Car went into reduced power mode and finally died while still moving. Lost power steering and finally brought car to a stop on left inside of expressway. After a short time she was able to restart the car and limp home. Note that the cruise control was on, but I do not know if it was set. Had the codes read that indicated a throttle position sensor caused the fault. There are two sensors which have to agree and if they don't car will go into reduced power mode. When she got home I found only the check engine light on. I have in the past moved the wires on the brake fluid sensor to get the check engine light to go off. Not knowing exactly how all of these different systems are tied together, I tend to think that the cars computer is the problem which sets off all the different warning lights on the dash. I went to the chevy dealership and the service advisor asked if this was a recall issue. I thought this was some what strange. After reading complaints on the net I can see why she might have thought it was a recall issue. The throttle body part is $300 dollars plus labor rate of $105/hr. As of now I cannot find any recalls for this issue. Nhtsa needs to look at this problem because the loss of steering with all systems due to motor stalling while in motion is a hazard to everyone.

While driving my 2009 Chevrolet Impala in a 55 mph zone, a series of warnings appeared on the dash: engine power reduced, service stabilitrak, check engine. Immediately the car would not accelerate, and speed decreased to about 10 mph.

Alarm came on that read service traction control - engine power reduced. I was trying to pass a semi-trailer with another car directly behind me. The engine suddenly went dead and another alarm read starting disabled. There was nothing I could do. If the car behind me had not noticed my car rolling to a stop I would have been rear ended and sent into the truck. This is a serious life-threatening situation and it needs to be addressed immediately.

I’m tried of my doors not locking with key fob and both rear doors and sometimes passenger side would not lock. This problem have been occurring since April 2013 and today may 2014 it’s still happening. I attempted to lock from inside vehicle and would still not lock or unlock. I have to maneuver walk around the car and lock the doors individual. Each time I take the car to the dealer they are telling me that this is not covered part. When I purchased this vehicle they claimed they conducted a full vehicle check. I think they lied and they car was never checked. Why do us as customer buy warrants and the warrant don’t cover electrical power. Is this a electrical problem? what can be done to prevent this problem?.

Purchased vehicle on 9/6/2012 used with 27,479 miles. On 9/19/2012 with 27,960 miles, I was accelerating on an onramp getting on a highway and two messages appeared on my dash: "reduced engine power" and "service traction control as well as the check engine light. Experience rough and hesitant shifting between gears and could not go faster than 35mph. Was able to safely navigate home on side roads. I took it to the dealer I purchased it from for service and was told it was reading code p2138 and the throttle pedal assembly needed to be replaced. The service was covered under the dealer's warranty and I was set to go. Flash forward to 10/24/2012 with 29,355 miles, I was driving on a side road and the same messages came up. I called on star and they performed a diagnostic which resulted in the computer reading codes p2138 and c0242. Experienced out of control wheel spinning and sensitive braking. Took it to a dealer in the area I was currently in traveling for business and they could not diagnose with any issue. All codes and lights were not engaged. I still did not feel safe driving my vehicle due to problem with accelerator and had towed to the purchasing dealer near my home. They also could not diagnose with any issue as they could not duplicate the error. This is a serious safety concern and a problem (especially on the highway) with a popular model. I have also filed a complaint with gm on this issue and am hoping to have it resolved immediately.

Vehicle gives a service throttle starting disabled message and promptly shuts off the engine. If you wait 5 minutes the car will restart and perform as usual. . . . . Until the next time. Shutting off the engine at interstate speeds is incredibly dangerous and is going to result in someone being killed. Based upon internet searches this appears to be a known issue, but gm will not proactively fix the problem.

Car stalled on the interstate. Merged car to break down lane without being hit. Traction control light illuminated. Car would not restart for about 20 minutes. Car then restarted and warning light was off. Previous electrical issues with this vehicle including rear windows that will not roll down and defective air bag sensor.

The contact owns a 2009 Chevrolet Impala. The contact stated that while driving at approximately 80 mph, the vehicle shifted gears independently. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The approximate failure mileage was 20,000.

Traction control light, and reduced engine power light came on. Lost power to the engine and had to stop. Turned the ignition off. Waited 10 minutes and started the car. Ran fine until I got home. This happened a few times before I took the car in. Found out it was an accelerator pedal position (app) sensor.

Let me try again. . . . I was driving on the expressway, at 55 mph, when the check engine and traction control warning lights came on, along with the reduced engine power warning . I took it into the dealer, where I bought it in Aug. 2009. I can't remember when this problem started & how many times prior, because the warning lights would go out, without any reduced engine power warning or reduced power. I thought it was one of what is called a computer glitches. It was at this time when I did get reduced engine power, when I knew I had to take it into the dealer. On Nov. 29,2010, the accelerator pedal was replaced. . . . . . On Jan. 05, 2011, I brought it back and was charged only half of the rate for mech. Diagnosis fee, because I argued so much, that the car is still under warranty, and they have not repaired the same initial problem. I left the car with them to drive, they drove it 28 miles without any problems. On Jan. 06,2011, mileage was 38727, they replaced the throttle body assembly, n/c. I think it was at this time, I was told to return the car, without shutting the engine off, which is what I did. On Feb. 05,2011, mileage was 39831, where they replaced a a. I. R. Vent valve. . . . I have changed living locations last spring. . . . Meaning there might be more times that it was brought in. . . . . My memory is telling me that the both warning lights were coming on and off last year, and now more frequent, with slight reduced engine power . . . 81000 miles.