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Chevy Impala "REDUCED ENGINE POWER" message

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Comments

  • Did you manager to resolve the problem. What did you do about it?
    Alex.
  • After being stranded this past Monday 2-6-12, my mechanic actually came to where I was stranded and replaced the throttle sensor foot pedal assembly. The reason I was stranded you ask? Well, thanks for asking! After starting my car and putting it in gear there was no power when I pushed on the gas pedal. It rolled back to my surprise and I also hit the car parked behind me (I was parked facing uphill). I slammed on the brake, put the car in park, excelerated and the engine revved like it should. I put it in gear again, and again it just rolled back and wouldn't rev the engine.

    My mechanic changed out the throttle sensor foot pedal assembly on the spot (didn't take long at all) and I soon was on my way. Wish I could say it had a happy ending, but less than 2 miles down the road the "engine power reduced" came on and also "service traction control". One doesn't come on else the other does (not sure how they are connected). Well, the car is worse now than it was before. I can't go 100 yards without the car losing power. I managed to get home (25 miles) but am sick and tired of spending money on things that are "supposed" to take care of the problem but doesn't. I personally bought this part from the dealer myself.

    Oh, and the oil issue. I really don't wanna go there, but,......the oil is dry after every 300 miles! Nope, not 3,000 miles,....THREE HUNDRED MILES! I have 119,000 miles on this car and have decided that I'm done with Chevy's. My husband has finally won the car war....I'm trading my Chevy for a Dodge. No more Chevy's for me. Just call me DONE!
  • I have had the same problem with my 07 Impala. I had the car a week, and started to have problems with the Engine Power Reduced situation. It stalls a t least once a week on me, stranding me for up to 15 minutes at a time. So, I had the pedal replaced, but to no avail, this STILL HAPPENS!! While on a freeway, going 65 MPH engine power reduced light comes on then, the engine disables and shuts down, trying to steer this is crazy after everything shuts down. And being on a freeway, with people driving behind you when it shuts off!!! THIS CAR IS A DEATH TRAP!!! I have had the car for 7 months and it has been nothing but trouble! I cant seem to get enough trade in value to trade it in either. So, I am just letting the vehicle go back and get reposessed. I will get another car, just NOT A CHEVY!!! NEVER AGAIN!

    I WILL NOT DRIVE IT ANYMORE, ESPECIALLY WITH MY CHILDREN INSIDE!
  • I was fortunate enough to experience this problem as I was taking my car out of park. I was very afraid, the car shook horribly. I can't aging what so many of you experienced. My Chevy is a 2010 with only 55000 miles. The dealership replaced the throttle body yesterday. I am praying that resolved the "reduced engine power issue as well as the stability issue but I will keep you posted.
  • :mad: HAS ANYONE HAD A TRUE DIAGNOSTIC OF WHAT NEEDS TO BE REPLACED? I have a 2006 Chevy Impala. I have bn having problems with this car since I reached the 90,000 mile. Transmission was rebuilt last year @ about 97,000 miles. I keep up with the oil change and regular maintenance of the car. So now im at 111,000 miles and the car has started back displaying engine power reduced for the past few days. My uncle has undone my battery cable post, but that only gives me just enough power to get a few blocks down the road. I have had so many small problems with this car besides the almost $3000 rebuilt trans job. So now I'm having to find a mechanic to help with this problem. I called several place today and just to do a diagnostic is starting @ $75 to $105. Not to mention I'm a single mom living paycheck to paycheck, I'm so upset at work rite now I can hardly maintain myself. :(
  • :mad: Pissed because in the middle of traffic today this "Engine Power reduced" Light along with the traction control light pops on and i cant go more then 40mph. Why? The engine has been having a shaky idle for about a week. Kind of studdering before finally acting right. Today, after starting it up, it had the studdering idle again before the "EPR" and "TC" messages came on. Any one get a definite answer and solution to the problem......about how much money are we talking? I have a 2007 Impala LT.
  • GM Tech (Cam) : Hello, I'm Cam. Please include all the details about your issue so I can accurately advise you. I cannot see your vehicle so please be detailed.

    GM Tech (Cam) : #PIP4578A: SES Light Idle Surge And/Or Reduced Engine Power Mode With DTCs P0068 P0121 P0506 P0507 P1516 P2101 P2119 And/Or P2176 - Clean Throttle Body And Perform Idle Learn Reset - (Feb 9, 2010)
  • dtrimdtrim Posts: 1
    I began having this problem with my '06 Impala in November. My mechanic cleaned the throttle body and everything was okay for a while. He told me that it wasn't likely to be a permanent solution, but that we would try it anyway. The car started acting up again about a week ago, with the RPMs fluctuating by 100-200. Not the smoothest ride these days, but it doesn't sound nearly as bad as what some of you have been dealing with. My mechanic ran a diagnostic and while I couldn't tell you exactly what it said, he did tell me that the throttle body needs to be replaced. As far as cost goes, I know that AutoZone has it listed for around $175. No idea what it would cost you through a shop or dealership.
  • I had the same problem on my 09 Impala. I however replace the pedal assy as Chevy said I was required to do. I just unplugged the connector, cleaned off the contacts, applied some ProGold, and put it back together. I worked in the electronic contact business for years. It is a very poor design by Chevrolet Engineers. Cheap contacts. The next time I will just cut the connector off the wiring harness and solder it to the contacts on the foot pedal. When ever you deal with resistance, you are always better off without connectors. If the humidity gets to high or low, it can affect a connection.
  • jpfjpf Posts: 496
    The "reduced power" message is quite often related to the throttle body. It either needs to be serviced or the wiring harness attached to it has a loose wire. Good luck.
  • Good luck. I also have a 2010 Impala that I just purchased 2 months ago and I have the same issue. Stable light traction light comes on and then reduce engine power goes on. The engine light stays on solid for a few drives cycles.
    It is scary. I also just had a major transmission repair which GM did cover undr warranty. However, I have had the car in the shop more than I have driven it.
  • do you know if this is covered under warranty or do you have to cough up the repair yourself>
  • It is not covered under the powertrain warranty. It is usually the gas pedal assy that usually causes this to happen, and it is caused by a sensor in the assy. It is just a bad design in my opinion.
  • scooks71scooks71 Posts: 2
    I just got my car from the GM dealer here and its an out of pocket expense for me. Roughly $450 to replace a faulty throttle body. If it was a warranty issue I'm outside of it now. 101,574mi. Perfect timing right?
  • gmcustsvcsarahgmcustsvcsarah Posts: 1,964
    Good morning,

    I want to make sure I understand your post here - you just purchased your vehicle from the GM dealer, or picked it up after servicing it for the Reduced Engine Power concern?

    If we can look into this further with you, please send us an email with more information (include your name/Edmunds username, phone and address, the last 8 digits of your VIN and current mileage, and the name of your involved dealership).

    Regards,
    Sarah
    GM Customer Service
  • I just had the complete throttle body assembly replaced yesterday. 39,000 miles and it was covered. started with check engine light. In Dec the dealer replaced 'secondary air injection valve.' Light stayed off for 2 weeks, then was intermittent until Saturday when we go the 'reduced power' message and it stalled. The report said the throttle body was shorted.
  • rmwhittarmwhitta Posts: 1
    I bought a 2008 Impala a year ago. I have about 67,000 mls on it, and in the past couple of months I have had a lot of trouble keeping it on the road in wet conditions. I started hearing a rubbing noise in the steering and a chirping noise while backing up when I turn the wheel all the way (both ways), and clunking noises when I turn. Chevy dealer said I had rust on my rotor and it will be fine. I noticed my left front tire was looking low, and when I took it in for an oil change and tire rotation, I was told the lower ball joint was broke and it was causing the tires to ware. I took it to my mechanic. He called Chevy and was told about a bulletin on the cars allignment. GM had a recall for police cars and government cars, but only a bulletin for the public. He fixed the alignment and put new tires on the car, because the front left was down to metal, and the others weren't great. The mechanic said that I shouldn't have any problems with my tires now. However, all of the rubbing, chirping, and clunking noises did not go away. Ideas?
  • I am having the same problem. It started out shifting hard, occasionally. Then it began shifting hard a lot. Little by little it has gotten worse. The engine power is reduced a lot, service traction control and service brake assist messages pop up. Sometimes it stalls, and wont start. I get a "starting disabled, service throttle" message. I wait five minutes and then it starts. The car runs like crap! I dont want to take it to a dealer because they are too pricey for me. Mine is a 2007 Impala LTZ. I agree, I doubt we are the only ones with this problem.
  • What part of the warranty are they covered under?
    I have an Impala 2009 and I'm getting this issue as of today. Reduced engine power and "service traction control" messages.
    If this is not covered under warranty I certainly won't be taking it to a dealership for fixing.

    This is obviously a very common issue. Why has there not been a recall? Why is GM not doing anything to address the problem?
  • msadmsad Posts: 1
    I have a 2011 Impala LT with 48000 miles. The check stabiltrak light came on and reduced engine power light. This is the first time it has done this and from what I read on your forum this is an ongoing problem with GM vehicles. After years of driving Fords, this is my first GM car since 1974 and I'm really disappointed. All of my Fords had over 100,000 miles on them before I had issues. Now I'm told I need to take to the dealer to have it checked and I'm retired and living on a pension. This seems like an engineering problem to me. GM needs to recall these vehicles. I only hope it's something covered under the 100,000 mile warranty.
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