Thread: Tach and Tcs light

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  1. #1 Tach and Tcs light 
    sgtsnake
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    Default 03-25-2009
    OK, I need some help with my 2000 Grand Prix GTP. Lately the tachometer just quits working and then the tcs light comes on, the rest of the guages work as they should.

    Sometimes when it happens the car shudders and seems to accelerate sluggish, but not always. Once restarted works as normal for a while at least. There is no service engine light on. Any thoughts???
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  2. #2 Re: Tach and Tcs light 
    princequeeley
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    Default 06-17-2009
    I have an 2004 gt that is doing the same thing, so far I'm thinking its either the ignition control module, or body control module.
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  3. #3 Re: Tach and Tcs light 
    Zef_66
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    Default 06-17-2009
    Sounds like a failing CPS to me.
    2001 GSE
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  4. #4 Re: Tach and Tcs light 
    Chernobyl
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    Default 06-19-2009
    Quote Originally Posted by Zef_66 View Post
    Sounds like a failing CPS to me.
    Correct! There is an amazing writeup in the how-to section here.
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  5. #5 Re: Tach and Tcs light 
    Sandman
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    Default 06-20-2009
    It's the CPS. My car did the same thing that you are describing.
    05 Saab 9-2X Linear (Saabaru)
    77 Morris Garage B
    Quote Originally Posted by TLSheff View Post
    You said "I'm done with it"... car says "Oh, really? *trollface*"
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  6. #6 Re: Tach and Tcs light 
    TDCRacing
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    Default 06-21-2009
    Mine does the same thing. I would have to say that the TCS light should not have anything to do with the RPM gauge.
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