Thread: Cruising and random unpredicted jerk

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  1. #1 Re: Cruising and random unpredicted jerk 
    GT Level Member RivMan's Avatar
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    I had this exact issue on my old GTP. It was caused by a bad VSS blipping out momentarily. The car would think that it went to 0mph for a second, and try to downshift to first. Watch the HUD or speedo when it happens to see if you can catch the blip.

    -Rob
    2004 GPGT - L32 Swap, CompG Trans - Click Here!
    1999 Regal - 300k miles: SOLD!
    1995 Riviera - L67 Swap, 12.9@107: SOLD!
    1999 GTP - 12.9@104: SOLD!
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  2. #2 Re: Cruising and random unpredicted jerk 
    GTX Level Member AKGTP19's Avatar
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    Quote Originally Posted by RivMan View Post
    I had this exact issue on my old GTP. It was caused by a bad VSS blipping out momentarily. The car would think that it went to 0mph for a second, and try to downshift to first. Watch the HUD or speedo when it happens to see if you can catch the blip.

    -Rob
    What is a VSS?


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    1999 GTP, Borla Cat Back.....SOLD
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  3. #3 Re: Cruising and random unpredicted jerk 
    GT Level Member RivMan's Avatar
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    Quote Originally Posted by AKGTP19 View Post
    What is a VSS?


    Sent from my iPhone using Tapatalk
    Vehicle Speed Sensor. It's the sensor on the Diff side of the transmission, right above the CV shaft.

    -Rob
    2004 GPGT - L32 Swap, CompG Trans - Click Here!
    1999 Regal - 300k miles: SOLD!
    1995 Riviera - L67 Swap, 12.9@107: SOLD!
    1999 GTP - 12.9@104: SOLD!
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