Last post on Dec 08, 2013 at 9:05 AM
You are in the Chevrolet Impala
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Chevrolet Impala, Auto Repair, Electrical, Fuel System, Sedan
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#281 of 485 Re: Traction Control, Check Engine Light, Engine Power Reduced and Starter Disa [christine68]
Feb 02, 2013 (9:21 pm)
Im having the same problem with my Chevy Traverse. GM really needs to step up to the plate and do a recall on this issue before someone gets killed in an accident. Same problem seems to be happening in the Saturn cars and Equinox too! Hey GM since you monitor these boards, YOU need to fix this problem now!!!!!
#282 of 485 Re: chevy impala "REDUCED ENGINE POWER" message [idahofarmboy]
Feb 04, 2013 (9:28 am)
I have the same promlem, mine is included with Traction control needs service.
for icy weather, when its warm no problems but suxx in the winter I love my chevy but dont know what to do went to garage change wheel bearing but came back shortly after
#283 of 485 Re: 2006 chevy impala THROTTLE CONTROL [gmcustsvc]
Feb 04, 2013 (2:53 pm)
Now I am having trouble again with my Impala - just had the gas pedal replaced - now apparently it's the gas caps or something. This is ridiculous. I think I"m going to write a letter to write letters to newspapers and tv news shows. If GM is not going to do anything - we need to start doing something.
#284 of 485 Re: Help. [trumble09]
Feb 04, 2013 (3:16 pm)
Battery didn't help after a weekend test drive "Reduced Engine Power/Service Throttle" were back, My dad started tracing wiring and found this in the PCM Box.
PCM Pic 1
PCM Pic 2
PCM Pic 3
The Blue in the terminal is a bunch of Icemelt salt that had found its way into the airbox with water and rode the wires down into the PCM plug and corroded some terminals, including the Throttle body wire connection. He cleaned the terminals with air and got the corrosion off them and the gunk out of the plug and got the moisture out and for 3 days my car has been running with no hiccups even when the traction control has kicked on a bunch of times on slick snowy roads (which caused the reduced engine power before) The PCM is located in the bottom of the airbox as it requires air to cool it, although it doesn't require salt. Someone who owned the car before me apparently had the PCM box off ripped a gasket and put it back on with half a gasket. Luckily so far it doesn't seem like permanent damage was done to the PCM.
#285 of 485 Re: 2009 impala traction control/power reduced [dandd2009]
Feb 05, 2013 (9:22 am)
If you need assistance locating another dealership in your area to get this looked into, please let us know! Send us an email at socialmediagm.com with your request and ZIP code.
Sarah, GM Customer Service
#286 of 485 Re: chevy impala "REDUCED ENGINE POWER" message [newhaven]
Feb 06, 2013 (7:53 am)
Good morning newhaven,
Was your garage one of our GM dealerships? If so, we'd be happy to follow up on your visit there. Please email us at socialmediagm.com (include your name and contact information, the last 8 digits of your VIN and mileage, and as summary of the situation so far).
Sarah, GM Customer Service
#288 of 485 SERVICE STABILITRAK
Feb 06, 2013 (11:20 am)
I have a 2011 Chevy Impala LT, I have been experiencing 3 messages SERVICE STABILITRAK, SERVICE TRACTION CONTROL AND REDUCING ENGINE POWER. This has been going on for months and the dealership wants to charge $129.00 for diagnostic. I took it to Autozone and got it for free. Just as I suspected that the Throttle Position Sensor (TPS) is broken or burned out. I also did a google search and found that many others are having the very same problem. The car would jerk and downshift. This morning I also received another message after I pulled over, STARTER DIABLED, SERVICE THROTTLE. I had to wait for minutes before starting again and 15-25 min there after.
Feb 06, 2013 (2:45 pm)
Look at my posts above I had the same issue, my throttle body was covered under the powertrain warranty but after 2009 they removed it. If you're still in bumper to bumper it may be covered, if not you can review other posts for cost of a replacement throttle body. They replaced my throttle body and it persisted. Other possible causes for the throttle body code include a bad throttle body wiring harness, or a gunked up PCM plug like we found in my car.
Feb 06, 2013 (6:28 pm)
I recently bought a new 2012 Impala LS and am very happy with it so far. I like to read up on issues with my cars and often check the different forums to see what the latest issues are. I also own a 2006 Toyota Matrix and just had some recall work done. This is from TOYOTA:
The ECM for certain 2005 through 2008 Toyota Corolla and Corolla Matrix models equipped with the 1ZZ-FE
engine and two-wheel drive may have been improperly manufactured. There is a possibility that a crack may
develop at certain solder points or on varistors on the circuit board. In most cases, if a crack occurs at certain
points or on certain varistors, the engine warning lamp could be illuminated*, harsh shifting could result, or the
engine may not start. In limited instances, if cracking occurs on particular solder points or varistors, the engine
could stop while the vehicle is being driven which may increase the risk of a crash.
The end result of this failure seems to be very similar to the Chevy reduced power problem many owners are experiencing. The vehicle may shut down at highway speeds and cause a crash.
My point is Toyota has seen the problem and is trying to correct it. I hope to get many good years of service from my Chevy but I also hope GM recognizes the problem many of their customers are experiencing and does something about it. I plan to remain a GM customer since I think they still build a quality product. I can see how many of the people on this forum are getting frustrated with this possibly life-threating problem.