Glad you got it taken care of, thanks for posting this.

 

Thanks for the heads up!!!

 

2011 Impala Throttle Body problem

Well, I just bought a 2011 Impala a month ago with 37,000 miles on it (just out of the bumper-to-bumper warranty). I had the same problem with the stabilitrak and traction control lights coming on and reduced power. So, I took it to the dealership this morning, got a call and it's the throttle body, so they say. $600 to replace it! A year old GM car and it just cost me another $600. Nedless to say, I am not a happy camper. I have owned several GM vehicles over the years and decided to give them another shot......big mistake. Next time I will buy something else. I don't understand why this is not covered under the powertrain warranty.:WTF:

 

I can't see how it wouldn't be covered under powertrain, and even if it wasn't, 1k miles out of bumper-to-bumper shouldn't matter that much. I wouldn't even bother going back to that dealer, talk to the customer service rep on the forum here, she can help you find another dealer and get things rolling. Thats bullshit.

 

talk to the customer service rep on the forum here, she can help you find another dealer and get things rolling.

King Nutin is correct! I would be more than happy to put Mphigley in touch with a different dealership.

@Mphigley, I understand your frustration and am very sorry to hear you experienced this. Please send me a direct message with your zip code and the dealership you already visited, and I can provide you with other options.

Best,

Katie
Chevrolet Customer Service

 

Well shit, this basically answers my question on behalf on my brother in law 07 impala. His CEL just came on a few days ago, he had it scanned and it came out to be the TB... Said the car acted like it wanted to cut off. So i guess i will break the bad news to him. But hey, what can i say. He is grown, he can work to get the shit fixed.

 

If you find your throttle body is bad and the car out of warranty and GM refuses to cover the repair, you could probably save a lot of money by replacing it yourself. I can't imagine it would be that hard.

 

The mechanical aspect of it wouldn't be, but since these are drive-by-wire, I'd imagine there is a process to dialing it in.

 

backfired really loud ...

hey guys i just had the recent same problem with mine i took my ride out to get serviced before winter storage so as i was starting the car it backfired on me like a really loud gun i saw like a blue flash and ppl around the car was kinda like freaked out my engine like blinked three tiime and wentoff i took it to gm and they said impalas dont back fire or misfire but they did say i do need a new throttle body which i would have to pay for it because when i bought the car from aother dealership i had to buy extended warranty from another company and that company said it was a wear and tear and not covered i paid them almost 4000 for this coverage and yet they wont cover it so ive just kept it in the garage im not sure what to do but i was thinking maybe just start adding new performances parts and add the throttle body and chuck the warranty but im still very pissed that they wouldnt cover for the throttle body did anyone ever get this issue fix would there still be a way to get this throttle body replaced under warranty

 

Really? I would think it would be plug and play...

 

How can they claim throttle body is a wear and tear item? I'd get a lawyer and get my money back.

 

there is a small plastic gear linking the electric motor in the throttle body to the throttle plate. The gears wear down, slip and the computer goes into limp mode to protect the engine. This is a chronic problem on several models. The only remedy is to replace the entire throttle body.

2007 Impala LS, 3.5V6, 66k miles

 

Throttle body failure

there is a small plastic gear linking the electric motor in the throttle body to the throttle plate. The gears wear down, slip and the computer goes into limp mode to protect the engine. This is a chronic problem on several models. The only remedy is to replace the entire throttle body.

2007 Impala LS, 3.5V6, 66k miles

Pontiac « AutoRepairInstructions.com

 

Still very much gm's fault for making them plastic, of course it will wear out, idiots.

 

Soo i was driving back home from a long trip. and i pull off to use the bathroom and when i was getting back on, the dash told me service stability control and turned off my TC. soo i pulled back over and turned the car off waited a min and fired it back up and everything was fine. But i never lost power. Anyone know wats going on? its happend a few other times.

 

I'm guessing you have a wheel speed sensor going bad.....

 

I have experienced a small reduction in high speed response in my car lately around 70 to 75 MPH. The car was slower to response to accelerator input than usual at that speed. I have not had the car go into limp mode or anything, but I am wondering if this has anything to do with the problem described int his thread, i.e throttle body problems and TPS sensor not communicating properly with the ECU. The car sat for some time, so I wonder if that could have contributed to the problem. I used Chevron Techron fuel injector cleaner in my next tankful of fuel to see if things will improve.

The overall mileage has improved somewhat, I got 23 MPG average yesterday driving mostly at 75 MPH.

 

I'm wondering if this issue has anything to do with my poor MPG??? I can't seem to get anything over 21.2 MPG!

Durango

 

there is a 100 pages of people withe the same issue with impalas, gm does nothing

 

2010 chevy impala 75,000 miles same message reduced engine power, service stablitrak, GM wont even look at without paying $93

 

had this issue before, just took it to get a full tune up, dunno if it was the tb or not, but that fixed it.


a good read however, need to look into that

 

I have an 07 impala LT with the 3.5. Ive had it for almost three years and had no problems with it. Then all of a sudden the car loses power and say engine power is reduced. So I get on the internet to see what I can find out. On the net it always gives advice for the the display saying engine power is reduced and something bout the traction control. Well all my display said was engine power is reduced not traction control problems. The power would come and go. One time the engine would run but it wouldn't go no matter how hard I hit the gas pedal. So I hook it up to a computer and it said throttle position error. The guy at autozone said the gas pedal works with the throttle position sensor and he guaranteed that was my problem. He said he has seen it may times and it fixes it. So I bought the pedal. Changed it in the autozone parking lot. Well that has been three days ago andmy car is back to normal. I just want to tell this tory cuz the gas pedal is cheaper and and a much easier fix.

 

Throttle body

Just wanted to say my wife's 11 impala was doing the same thing. We replaced the throttle body and within 500 miles the error came back. I think it's more of a computer issue but since gm offers no help what so ever i guess we won't know for sure!! Thanks gm. You suck!!

 

As mentioned above, look into the gas pedal assembly. With these drive-by-wire cars, a bad sensor in the gas-pedal assembly could cause all sorts of issues. Apparently, it fixed the issue for the poster above your post...

 

My 2010 Impala is giving me this reduced engine power error as well. I've already dished out $440 to get the throttle body sensor fixed and the error code is still present. After I got it fixed I drove about 300 miles over the Easter weekend before the error came back on and the engine light came on. It gives me two errors at the same time, "Service Traction Control", "Reduced Engine Power" and on top of this the passenger air bag sensor has been shot since a few months after I got the car...not too happy with this vehicle and from the way it looks GM has had this problem with a TON of their vehicles. There should be a recall to fix this issue but as mentioned before it just seems to get swept under the rug...

 

I have a 2011 impala, I've had the same issue of reduced engine power, and said service stability Trac, and my passenger air bag is out it's only happened once so far, and I'm sure reading these Posts it will happen again. Alot of issues. with this cheaply built impala. Guess I'll sell it before it gets worce.