Thread: Will a 98 gtp tranny work in my 99 gtp?

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  1. #1 Will a 98 gtp tranny work in my 99 gtp? 
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    I have a 1999 GTP with 143000 miles and am having issues with the transmission. I have found a 99 GTP transmission with 20k miles and was wondering if they will interchange? I have been told by GM dealer they are different part numbers, and some of the electronics maybe different. Can anyone give me some insight on this please?
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  2. #2 Re: Will a 98 gtp tranny work in my 99 gtp? 
    GTX Level Member OH4CompG's Avatar
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    98-99 Should be fine as long as it has the threaded cooler line fittings and aren't the quick connect style.
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  3. #3 Re: Will a 98 gtp tranny work in my 99 gtp? 
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    Thankyou, I have not bought it yet, trying to do all my research first.
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