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2007 Impala LTZ "starting disabled service throttle" "engine power reduced"

I own a 2007 Impala LTZ. Right before 100,000 miles, the car started shifting hard from first to second. I took it to the dealer, who told me there was nothing wrong with the car and they couldnt reproduce the problem. I called Chevrolet and asked if the warranty would cover the problem. They would have if the dealer could identify what was wrong. So, basically I ended up with a bill from the dealer and no help from Chevrolet. Now, three months later the car is really bad and is getting worse. The warranty has run out. I keep getting "starting disabled, service throttle" "engine power reduced" "service traction control" "low oil" , and those are just a few of the many, plus my engine light is back on. Less than six months ago we paid the dealer $997 for repairs, $400 just a few weeks ago to another mechanic to replace something to do with the throttle. Its still running awful, stalls, power is reduced all the time, and dangerous. Im furious because I tried to get it fixed before the warranty ran out. Now Im going to be stuck with a huge bill. Anyone have any ideas about what the problem might be? Any suggestions? We live near Syracuse NY and bought the car from Sun Chevrolet in Chittenango NY.

Comments

  • ashleyemashleyem Posts: 1
    I've been having the same issue with my car I have a 2009 Impala LT, and starting the beginning of January 12" the sensors to "service traction control" and "engine power is reduced" have been coming on. I've been to 3 different shops including Chevy who told me that it had something to do with the brakes and a hub and low pressure cap, they charged me 1500.00 for all that. The sensors were still coming on. I went to another mechanic before who told me that I needed a new computer chip in my car and I had a voltage problem somewhere and a small leak. One day the indication to tighten my gas cap came on and all the sensors went off after that. Easter Sunday, the sensors came back on and went away again and now after just getting the car fixed again last Monday the sensors came back on, however this is the only time the car hasn't displayed the "starting disabled service throttle" message and shutoff on me. The dealer has told me I'm not under warranty anymore and I only have a power-train warranty but I was told there is nothing wrong with the electrical system, transmission or engine. No one seems to know what is wrong with my car either, including Chevrolet. I was told I had too many miles on there for me to file a suit because I feel the car is a lemon. Considering the fact that I purchased it in November of 2010. I'm looking for suggestions also, I live in Baltimore County, MD.
  • gmcustsvcsarahgmcustsvcsarah Posts: 1,964
    lauriebrown,
    I see it's been a while since your original post here; have you made any progress towards resolving this? Please contact us at socialmedia@gm.com if we can answer any questions or look into this further.
    Regards,
    Sarah
    GM Customer Service
  • gmcustsvcsarahgmcustsvcsarah Posts: 1,964
    ashleyem,
    If we can look into this further with you, please send an email to socialmedia@gm.com with your name/Edmunds username, phone and address, the last 8 of your VIN and current mileage, the name of your dealership and details on appointments with your dealership pertaining to this matter (date, how much was paid, etc).
    Best,
    Sarah
    GM Customer Service
  • ats21ats21 Posts: 1
    I just start having the same problem first the check engine light start coming on they said it was and emmisions problem I had that fix the it start reading reduced engine power had it checked they said they didn't find anything now me check engine light comes on. Still saying reduced engine power and starting disabled service throttle it stalls then 5min later it start back up fine wtf. My impala is a 2008 only 50,000 miles on it and they still telling me they don't what's wrong wit it
  • gmcustsvcsarahgmcustsvcsarah Posts: 1,964
    ats21,
    We're happy to follow up on you with this; please see the above message on how to contact us and what information we request be included to get started.

    Best,
    Sarah
    GM Customer Service
  • raider31raider31 Posts: 1
    i just started having the same "service throttle" "engine power reduced" issue. I have been looking online and surprised on how many people are having the very same issue. I will need to get my car fixed asap and do not want to go thru the same money spending spree trying to figure out the problem. Has this been figured out? Can you give me some info on what is causing this so i can get it fixed the first time?

    Thanks
  • I've just experienced the same issue, I got a reduced power error then service traction error it began idling and shifting rough and then roughly 15 miles driving the car - 2009 Impala - stalled and the error starting disabled service throttle came on. The cars milage is at 55695 and I've owned it since December of 2012. Please help.
  • Ive got the same problem w/2007 impala LT car suxxx trading it in on a Nissan
    GM sucks
  • gmcustsvcgmcustsvc Posts: 4,076
    Please feel free to contact us via socialmedia@gm.com, nextwavesvc, and we'll check into this with you! Include your name and contact information, the last 8 digits of your VIN and mileage, and a summary of the situation so far.
    Sarah, GM Customer Service
  • max104max104 Posts: 4
    i have read so many people having issues with this,has anybody found the problem with this.
  • joel92fjoel92f Posts: 1
    I just had this happen today. Same error codes popped up on display....ended up being accelerator pedal assembly for $152.73. $35.00 to change it and $35.00 for diagnosis. Totals

    LABOR: $70.00
    PARTS: $152.73
    SUB: $222.73
    TAX: $15.59
    TOTAL: $238.32

    I tried being detailed.... I hope this helps
  • I am looking for a 2013 Honda 4 door EX sedan with no add on. I live in the NYC area. I see many post here saying you can get a price for $2k less than dealer invoice. Is this realistics? I have been through many calls and email thru the local dealers and the lowest i have so far is $23,500 not including $790 destination tax and DMV doc fees. The dealer invoice for this model is $24,036. I am flexible in color.

    Any suggestions how can I get a better deal? Wait till the end of this month ... etc? And what is the target price I should have for this model? I have no trade in or financing.

    I think the 2014 and 2013 models are the same so I am ok with the 2013 model if this can save me $.
  • Hey lauriebrown, I know it's been a while since you posted this, but I was wondering if you ever got a resolution on this. My 2007 Impala just hit 102,000 miles and is having the same issue with shifting. I was hoping you might have some insight before I get hammered with repair bills to try to figure it out :(.

    Thank you!

    @lauriebrown said: I own a 2007 Impala LTZ. Right before 100,000 miles, the car started shifting hard from first to second. I took it to the dealer, who told me there was nothing wrong with the car and they couldnt reproduce the problem. I called Chevrolet and asked if the warranty would cover the problem. They would have if the dealer could identify what was wrong. So, basically I ended up with a bill from the dealer and no help from Chevrolet. Now, three months later the car is really bad and is getting worse. The warranty has run out. I keep getting "starting disabled, service throttle" "engine power reduced" "service traction control" "low oil" , and those are just a few of the many, plus my engine light is back on. Less than six months ago we paid the dealer $997 for repairs, $400 just a few weeks ago to another mechanic to replace something to do with the throttle. Its still running awful, stalls, power is reduced all the time, and dangerous. Im furious because I tried to get it fixed before the warranty ran out. Now Im going to be stuck with a huge bill. Anyone have any ideas about what the problem might be? Any suggestions? We live near Syracuse NY and bought the car from Sun Chevrolet in Chittenango NY.

  • a_ra_r Posts: 9
    I have a 2007 impala LT 104,800 miles same issue took it to 2 shops they can't figure it out. Midas said it was spark plugs and wires the throttle body needed cleaned and needs EVAP canister. Did all of that same problem. The 2nd shop does not know what is causing the issue I am the original owner of this car and I can say that this car has given me more trouble than any car I have owned previously. And those have been older with many more miles. I contacted GM as suggested above and I'm still waiting for a reply.
  • a_ra_r Posts: 9
    Here is what I got from GM:

    [THREAD ID:1-LG1OE2]

    Hello

    Thank you for taking the time to reach out to us regarding your concerns. We're very sorry to hear that you've experienced these issues with your Impala, and we understand the importance of having this resolved. I have researched your VIN and at this time there are no service announcements listed describing the issues you have experienced. Since I am not technically trained, we do rely on the dealerships as our eyes and ears in the field, and trust them to diagnose and repair any present vehicle issues. I understand that you've been working with a mechanic at Midas, but they have been unable to isolate the cause of your concerns. If you are interested in visiting a Chevrolet certified dealership to have your vehicle inspected, we would be more than happy to assist during this process. Since you are outside of your vehicle warranty, you will be responsible for paying the diagnostic fee. Please send us the name of your preferred GM dealership if you would like for us to reach out to them on your behalf.

    Regards,


    GM Customer Care
  • I have a 2009 Impala LT with 106,000 miles and have gotten these messages in the past, but today was the first day I lost total power and control of accelerator use. I have had the evap canister replaced 3 times since I bought the car in 2009. I have read several forums regarding the "Engine Power Reduced" and several GM requests suggeting we take our cars a Certified dealership. But every single person says the dealership can't find anything. Yet is more than happy to replace some parts and charge a fortune to do so. The only way to resolve these issues is through each other in these forums. I will buy my partsm RockAuto.com and replace the parts. Looks like the gas pedal assembly is next on my list to buy and replace. GM has had these issues for years, and would you think they'd find an answer to help us out...nope. but will take our money with no problem. I'm going foreign for my next car after being a GM owner my whole life.
  • a_ra_r Posts: 9
    Im still waiting for my appointment with the dealership. They won't guarantee anything I asked the social media rep if they can at least guarantee that they will fix it right the first time and she gave me a line from their book.

    I feel with that recent ignition related recall they are trying to avoid more bad press and of course money loss. The ignition issue took 13 deaths before they would even step up and apologize. This situation is also dangerous... and expensive.

    Do a search on this Edmunds site and see how many threads are connected to this same issue from Chevrolet across many models and several years with different mileage. There are other sites with people having the same issue: yahoo, Chevy forum, traverse forum and fixya to name a few. Has anyone figured out a solution to this problem?

    We need to make more noise and get their attention. They littered American highways with junk cars and left their customers with a bad product for which they take no responsibility I do not see how such a poorly operated company can survive much longer.
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