Thread: 1999 Grand Prix Transmission headaches...please help!

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  1. #1 Re: 1999 Grand Prix Transmission headaches...please help! 
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    Thanks for the info...I know that the fluid is OK, I just did a fluid change and the level is good. Today it was really bad on the highway, just up and down rpm's constantly...lurching going up even small hills.

    I will avoid the dealer and try and find a local shop that has at least some experience with the 4t65e.
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  2. #2 Re: 1999 Grand Prix Transmission headaches...please help! 
    GXP Level Member Zef_66's Avatar
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    Quote Originally Posted by istorm70 View Post
    Thanks for the info...I know that the fluid is OK, I just did a fluid change and the level is good. Today it was really bad on the highway, just up and down rpm's constantly...lurching going up even small hills.
    Check it again. Make sure the car is hot, in park, and level. And then check it. And check it again. I typically check my tranny fluid every day for 2 weeks after I change my filter and fluid. The level will change.

    But I am still of the assumption that you will need a rebuild.
    2001 GSE
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  3. #3 Re: 1999 Grand Prix Transmission headaches...please help! 
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    Will check again....good point I havent checked since just after the change...have it booked into Tranny shop tomorrow though to diagnose. I'll keep you posted about what they say problems are.
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  4. #4 Re: 1999 Grand Prix Transmission headaches...please help! 
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    Quote Originally Posted by istorm70 View Post
    Will check again....good point I havent checked since just after the change...have it booked into Tranny shop tomorrow though to diagnose. I'll keep you posted about what they say problems are.
    Maybe a little late, but make sure you check the fluid before you take it in.
    2001 GSE
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