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Weird Shifting Problem

This is a discussion on Weird Shifting Problem within the 1997 to current 4 speed Automatic (4T65E) (4T65E-HD) forums, part of the Transmissions category; Today I went to drive my GTP and realized it was shifting weird out of 2nd gear. Instead of shifting ...

  1. #1
    GT Level Member Btownmills's Avatar
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    Default Weird Shifting Problem

    Today I went to drive my GTP and realized it was shifting weird out of 2nd gear. Instead of shifting like, normal, it stayed around 3000-4000 rpms and didn't shift until i completely let off the gas. I decided to go faster and see if it would shift at a higher speed. As soon as I hit around 90 in second instead of shifting at redline it just kept revving and didn't shift. Is this a common issue with the GTP? Does anybody have any type of idea what it could be?

  2. #2
    GT Level Member Btownmills's Avatar
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    Default Re: Weird Shifting Problem

    Help me out guys :/.

  3. #3
    GT Level Member GMCustomerService's Avatar
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    Default Re: Weird Shifting Problem

    Btownmills,

    What year is the vehicle?

    Louis
    GM Customer Service
    Check out the NEW Owner Center at: My.GM.com

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    GT Level Member Btownmills's Avatar
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    Default Re: Weird Shifting Problem

    It's a 98 with 128k on it.

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    GXP Level Member FordMan77's Avatar
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    Default Re: Weird Shifting Problem

    When was the last time a pan drop/filter and fluid change was done? When was your last tune up? If you have any ignition related or sensor issues they can effect the way the trans shifts. Simply cleaning the TB and MAF can sometimes fix it.

    Other than that you may need to have this scanned by a code reader that can read the trans codes. And no, they do not set a check engine light so you may have some and not know it. Could be a bad shift solenoid, sticky 2-3 accumulator, valve body issue, etc.. Fill in some details and we can go from there.

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    GT Level Member Btownmills's Avatar
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    Default Re: Weird Shifting Problem

    Quote Originally Posted by FordMan77 View Post
    When was the last time a pan drop/filter and fluid change was done? When was your last tune up? If you have any ignition related or sensor issues they can effect the way the trans shifts. Simply cleaning the TB and MAF can sometimes fix it.

    Other than that you may need to have this scanned by a code reader that can read the trans codes. And no, they do not set a check engine light so you may have some and not know it. Could be a bad shift solenoid, sticky 2-3 accumulator, valve body issue, etc.. Fill in some details and we can go from there.
    I'm honestly not sure. I bought the car about a month ago with very little maintenance records from a friend. I haven't noticed any issues. But I'll get a scan done and try to get a code. Thanks a lot for the help man.

  7. #7
    SE Level Member 19GTP98's Avatar
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    Default Re: Weird Shifting Problem

    some thing happened to me man and it turned out that the 3rd gear clutch was just about completely GONE. pieces were every where inside the tranny

  8. #8
    SE Level Member dougmac's Avatar
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    Default Re: Weird Shifting Problem

    oops
    Last edited by dougmac; 06-17-2012 at 09:52 AM.

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