Hello Troy5530,

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Jasmine F
Chevrolet Customer Care

 

i took my 2010 Chevy Impala to the dealer for this same reason Service Traction Control, Service Stabilitrack, Engine power reduced problem, they said that it was the body throttled and a bad sensor that was causing the problem. Paid $700 plus dollars to get it fixed. Received a letter in mail for them to reimburse me and comes to find out it's not going to happen because the part that they are only recalling is in GAS PETAL but if the throttle is causing the same exact problem why not recall it too!!!! Chevy needs to get there **** together!!!!

 

I agree ive bought nothing but chevys since i was 16 and only started having problems with the newer ones...my mechanic just ordered a new gas pedal kit so lets see if its a hit or miss

 

This problem is not limited to Chevy's. I have had this problem on my '02 Saturn VUE. (I will try to keep this short.) It started in 2008, randomly the service engine soon (SES) light would come on, most of the time when the engine fully warmed up. It would reset after a few ignition cycles. After a few months I gave in and had it looked at. They said it was the catalytic converter, which was replaced for free because of milage. In 2010 the SES and reduced power light came on and basically I could only go about 25 mph or so. I had it towed to the dealer and after a week I had a new cpu and wire harness to the tune of $2600. (I loved my car at the time, and this was the only problem I had since I bought it, so I went for it.) Eight months later the SES light started to come on and reset again. This started my love/hate relationship with it. It didn't affect any thing, no codes to explain the problem, plus I passed my emissions every year, so I ignored it for the most part. This March it acted up again (SES and reduced power). I wound up replacing the throttle body this time. It was fine until last month, now I get the SES and reduced power again. It usually resets now, and even with reduced power I am able to safely drive at highway speeds, with just a little problem on hills. The strangest thing about it is my gas mileage has increased. My love/hate continues but I am basically ignoring the damn lights for now. Of course now due to being laid off and injured I can't really do anything else right now. ... For those who need a bit more information about the problem the car has 186,000 miles on it and the problem is a year round thing. ... Sorry for the length of the post. I do hope it helps someone and maybe GM will actually do something for some or all of us! (Not holding my breath! )

 

Same thing my question is did they replace the throttle body position ER or the throttle body actuator... please help thank you

 

I have a 2008 silverado with this issue, came up day before yesterday while idling it just got this warning and shut off at the same time. I was able to restart it after a few minutes, but it got this warning 3 more times on the way home and every time it shut off and I lost breaks and power steering, it only appeared to happen when my foot was off the gas.

I plan on taking to the dealer this week, but being that I have cleared the warning and it has not come back in over 100 miles of driving, so we will see what they find. I got an 800 mile round trip to Valdez in 2 weeks towing a trailer could be exciting.

 

Well I joined the club today. My service traction warning has been coming on and off for a while now in my 2008 Malibu, so today finally the Engine Power Reduced issue arose along with the STC warning. Thankfully, I had just gotten off the highway and was sitting at an intersection when it occurred, good thing I was literally right around the corner from the service station near my home. Wish I would have known about this sooner since the shop I dropped it off at is not specifically a Chevy service station. Hopefully I am not the first to bring a GM car in with this problem so they know exactly what the issue may be...we shall see.

 

Happened to me this past week 120 miles from home. I have a 2009 GMC Yukon Hybrid with 108,000 miles. The Chevy dealership said they couldn't find the problem at first. They called me back the following day and said they consulted with the Dealership service support (whatever that is) and said the problem was the "Engine Control Module" and needed to be replaced. They did not mentioned anything about the throttle body or throttle sensors. Nowhere on this board did I see anyone mention that the Engine Control Module was their problem, unless I missed it. On one hand that worries me, am I replacing a part that doesn't need to be replaced? On the other hand, it appears that the other owners that had throttle body/sensors replaced continue to have issues.

I am now concerned that this problem will persist. When the Engine Control Module is done on Friday the 17th I guess I will have a nice drive home to see how the car operates. I will report back in a couple days to update the progress, if it would be helpful. The Engine Control Module is going to cost just under $600 parts and labor. Hopefully it resolves the problem because it looks as though the throttle sensor/body issue would be another $500+.

 

Sudsy,

The Engine Control Module was one of the parts they replaced early on when this first started happening to me(yes I believe it cost close to $600). This did not fix the problem and it happened to me again shortly after. For me, the final fix seems to be when they completely rewired the wiring harness that connects to the ECM. Before they did that, they replaced the throttle body twice and the pedal position sensor once. The whole car shutting down while driving 70 miles an hour on the highway happened to me 9 times. Be careful out there, hope this information helps.

 

Wonderful! Looks like I am just in the beginning stages of this mess. Thanks for your update, I appreciate it.

Do you know if it was because they continued to fix the wrong parts until they replaced them all , or was it the fact that all the different parts began to fail, and each needed to be replaced at different times? I'm worried this is a guess and check style of fixing the problem. Do you know if they originally had fixed the wiring harness in the beginning would you have had to replace all the other parts that you mention?