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  1. #1
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    Default Vibration under acceleration.

    2000 GTP. Lately under acceleration (freeway on ramp) I've noticed a vibration. It's worse when I go through a dip and the ground is rising again. Also, the vibration goes away completely when I lift my foot off the go pedal. I'm thinking drive axles? There is no low speed grinding when turning, I've had it up on stands to check bearing and all four wheels are good. A arm bushings all look good and the struts where replaced a few yrs (maybe 15k miles) ago. Anyone else have this and figure out the cause? I hate to swap parts to diagnose, but I have been unable to find a for sure cause of the vibes. Thanks!

    Sent from my LGL22C using Tapatalk

  2. #2
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Default Re: Vibration under acceleration.

    I'd lean towards an axle issus too.

    Make sure your motor mounts aren't shot either, causing the engine to rock/tilt to the side and throw off the axle geometry.

    SMGPFC Member #1

  3. #3
    GTP Level Member LeadfootCJ7's Avatar
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    Default Re: Vibration under acceleration.

    Did this start immediately after any work was done or anything was changed on the car? Has the problem gotten progressively worse?

    I also think it is a CV axle issue, but there are other possibilities.
    2007 Grand Prix GXP;2002 Camaro Z28 - tune, CAI, and exhaust
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  4. #4
    GrandPrix Junkie Bronco Boy's Avatar
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    Default Re: Vibration under acceleration.

    I vote for CV shaft(s).
    Chris B
    2002 GT

  5. #5
    I can't car too good. SaukRapids's Avatar
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    Default Re: Vibration under acceleration.

    Lots of people suggest pulling good OEM shafts from the yard.

  6. #6
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    Default Re: Vibration under acceleration.

    No recent work, just gradually came on. If I'm doing it, I'll just get New ones. They aren't that expensive.

    Sent from my LGL22C using Tapatalk

  7. #7
    I can't car too good. SaukRapids's Avatar
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    Default Re: Vibration under acceleration.

    No, they're not. Get the Delco ones then unless it seems like a fun job the first time.

  8. #8
    GT Level Member wstefan20's Avatar
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    Default Re: Vibration under acceleration.

    Quote Originally Posted by SaukRapids View Post
    No, they're not. Get the Delco ones then unless it seems like a fun job the first time.
    Sauk knows his sh*t here. I've been through two "brand new" axles on my driver's side (one from advanced auto parts, one rockauto). They were both too short actually which is strange for the driver's side since you'd expect that for the passenger side with the hd differential, not the driver's. I should post the pictures it's hilarious!

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