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  1. #1

    Default Reduced Power Warning and Engine Check Light

    Has any one heard of the Reduced Power warning that comes on with a check engine light. Mine came on tonight and I lost a majority of the power to my 2005 Colorado. any ideas what the problem could be?
    Last edited by ChevyFan; 06-25-2013 at 10:03 AM.

  2. #2
    Legend
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    I've heard that many of these vehicles have a "limp home" mode. When the ECU expects, or detects catastrophic failure of some engine, or transmission component it will put the engine into that mode to prevent too much damage from being done.

    Can you tell us what the truck was doing at the time of the reduced power warning?
    Patrick
    Rhode Island


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  4. #3

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    I was driving and the truck all of a sudden lost power. no warning no sounds at all. then the warning signs came on. I then drove torward home and the truck died at a light. I then coasted backward to park on the side of the road and then tried to turn the truck back on. It started the reduced power light went off and the check engine stayed on. but full power came back. I drove the car home and havent started it since.

  5. #4
    Legend
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    I would say you should see about getting the codes pulled. They will give you the most info as to what the problem is.

  6. #5
    Sr. Apprentice ChevyTech's Avatar
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    There is a recall on the truck for the A/C. The voltage spikes with the fan switching and causes the car to go in to limp home mode and the A/C stops working . Call GM and see what recalls and updates are open on your truck.

  7. #6
    Legend unplugged's Avatar
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    Hey ChevyTech, you didn't mention if that was a NHTSA recall or a factory TSB. The only data I could dig up was this from ConsumerGuide

    Check-engine light:
    The check engine light may come on accompanied by an engine misfire due to weak exhaust valve springs which must be replaced. (2004-05)
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