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Chevy Impala "REDUCED ENGINE POWER" message



  • here is the response from the Better Business Bureau - I gather unless someone get hurts or more complaints are made. NOthing will be done. How unfortunate.

    Complaint ID#: 1262430
    Business Name: General Motors of Canada Limited

    Thank you for the information you provided regarding the above-mentioned company. Your correspondence was received by your BBB on September 24, 2012 and has been assigned case# 1262430 in our files.

    We appreciate your effort in bringing this to our attention. Information from the public is always valuable to us.

    The correspondence you supplied will become part of your BBB's file on the business however, we will not be pursuing this matter as a formal complaint.

    Either you have not supplied a specific resolution, requested that the BBB reprimand a business, you are only seeking an apology or the company has already made a reasonable effort to resolve this matter. We also do not act on copies of letters nor do we request a company go against their policies.

    A summary of this case can be viewed by clicking here


    Teresa Smith
    Complaint Administrator
    BBB Complaint Department
  • Lil,
    Thank you for taking the time to email me with your concerns. I apologize fo ryour frustrations and inconvenience. Due to your location you will need to contact GM of Canada at 800-263-3777 (Hours: M-F 7:30am - 11:30pm, Sat 7:30am - 6:00 EST). I hope this information helps.
    GM Customer Service

    This is the response to GM from this site. In my notes I had already contact GM in Canada. Unfortunately nothing will be done until someone gets hurts which is so unfortunate.
  • debo6debo6 Posts: 5
    I submitted a compliant with NHTSA-1-888-327-4236
  • debo6debo6 Posts: 5
    I submitted a compliant to NHTSA -1888-327-4236. If enough people complain,GM will have to repair this problem at their expense. Please call and file a complaint.
  • lil100lil100 Posts: 12
    I submitted a complaint to transport Canada. I have heard nothing. Going to follow up at the end of the week.
  • Please help! I started having this issue beginning of summer and just hearing it can stall at anytime is making me not want to drive my vehicle,which is my only source of transportation. My engine redue power message comes on and it starts to hesitate,believe the next thing it will cut off. Someone from GM need to stop saying "glad nobody was hurt" and fix the problem. I cannot afford to keep getting an incorrect diagnosis-Can someone help me and let me know what they found..the other messages seem so conflicting
  • Janet101,

    From the many, many messages/posts I've read, it appears to be a failed sensor in the gas pedal. I've also done some extensive research on replacement parts. So far Carquest appears to be the cheapest at around $50 dollars. O'Reilly's has them for about $55 and AutoZone wanted $73. I'm picking mine up today and installing it myself. It's a simple fix and can be done with limited automotive experience. There are two bolts(10MM) and a clip for the wire harness. So you will need a screwdriver and wrench w/ a socket. I also found a helpful video on Youtube you can watch before. Just search on changing or diagnosing error code P2138 for Chevy Impala.

    It is in my very own opinion that Chevrolet only wants to appear to be interested in the numerous complaints their many loyal customers have presented to them. I'm taking action and making the fix myself. I'm a single father of 4 young kids and my car is our sole source of transportation. I absolutely hate the fact I fear for their lives and any other drivers we encounter on the road, not knowing if my Chevy IMPALA will stall out yet again and hit someone or something. For now on, I will tell everyone my story and buy Ford, Mazda, Toyota or another maker.
  • Hi janet101,

    If you had wanted for us to look into this further with you and your dealership, please contact us via email at (include your name and Edmunds username, phone and address, the last 8 of your VIN and mileage, and the name of your dealership).

    Sarah, GM Customer Service
  • lil100lil100 Posts: 12
    As I look at entry after entry. GM Customer SErvice just gives the standard statement - send us a direct e-mail and we will look into it. And yet nothing is done.

    If it's only a $50 part and obviously GM is aware of the problem. Why not recall it and save someone from being hurt.
  • lupe67lupe67 Posts: 1
    I just got a Traction control stabilization message with a Reduced engine power message. Luckily it didn't stall like the other posts i was reading as i was on the freeway also. It is a 2010 Impala i bout exactly 1 year ago. It has 53,000 miles on it. I took it to the dealership this morning and waiting to hear back. I do have an extended warranty and i hope its covered. Can't afford $300-$400 in repair charges.
  • Good morning lupe67,

    Please keep us posted on the progress at your dealership on this reduced engine power concern with your Impala. We can be reached at if you had wanted for us to look into anything further (include your name, contact information, the last 8 of your VIN, and the name of your dealership).

    Sarah, GM Customer Service
  • Just wanted to follow up with everyone on my progress. I purchased my new gas pedal on Tuesday, October 2nd. It took me about 20 minutes to install. I've now driven over 500 miles and have yet to have any of the errors, alarms, warnings; etc.. that were previously going off.

    I'm very thankful to the person in this string of messages who actually stated what the issue was. Honestly, it is my own opinion that I have a totally different car. The acceleration, cruising speed and overall performance of the engine is night and day from the previous bad pedal. Not sure why but I'm not complaining :)

    In the end, my advise to anyone who is having the same issues I had, go to a parts store and get yourself a pedal. They are between $50 and $75 dollars. It takes just a handful of minutes to replace and start enjoying your new stress' free impala. If anyone has any questions, please reply back to this post and I will gladly answer them.
  • irmacirmac Posts: 1
    Hi ust wanted to know if you could please tell me the exact name of the part, i need to replace it on my Impala so that i can stop getting these messages.
  • du1152du1152 Posts: 5
    Accelerator Pedal Sensor. O'Reilly Auto Parts have them for about $50.00. Some stores may have to order them in.
  • I am having the same problem with a 2009 .
  • impalacrap,

    Have you been working with your dealership to get this checked into? If so, and if you would like for us to follow up on your visit(s) with them, please send us an email with more information (including your name and Edmunds username, phone and address, the last 8 digits of your VIN and mileage, and the name of your dealership).

    Sarah, GM Customer Service
  • lil100lil100 Posts: 12
    All of us need to contact Transport Canada or Transport USA to put in reports. In Canada apparently I'm the only one. The more concerns they receive - they will investigate but until then - they will not take action. The car manufactureres are not the ones that put in a recall. So contact them and put in a report. Now - they can't do anything until someone gets hurt.
  • lil100lil100 Posts: 12
    How about stepping up and just tell people to bring their cars in and replace it. Obviously a defect in your manufacturing.
  • dasupadasupa Posts: 13
    Here is a youtube post about your problems! He doesn't actually fix it, but he does show that afterwards the car works. Also, there are other youtube posts that do show how to replace your gas pedal. It looks REALLY simple. I'm going to do mine right now. If the results are good, I'll report back.
  • dasupadasupa Posts: 13
    Hi all,

    Here is my update to changing the gas pedal. First, it didn't work. Second, here were my symptoms:

    -When I'm (a) stopped or (b) moving very slow, nothing happens for a bout 1-2 secs when I press the gas. No rpm's no nothing. Then it jerks to life in a violent way and gets moving.
    -When I'm coming to a stop and almost fully stopped, the car jerks (maybe from 2nd to 1st gear).
    -After driving for about and hr on the highway, my car sends a traction control alert and powers down the engine. Turning it off then on again has fixed this so far.
    -When I'm sitting at a stop sign, the rpm's are fluttering a little.

    This sounded like the throttle body to me (which by change Chevy makes you buy the entire friggin thing if you need to fix the computer chip). But I wanted to avoid spending a lot of money. No luck though. The throttle body doesn't look too bad to change on my own. If anyone has any tips, I'd be glad to hear from you.
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