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Discussion Starter · #1 ·
I have an 04 Impala base model 3400 engine i heard there is like 4 different transmissions for these cars is this right and how do i tell which one my car has? Thanks
 

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I eat brains... gimme brains!
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4T65E.. only 1 transmission but it fits in 4 different cars... you also have the Heavy Duty option
 

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8th Gen Antagonist
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There were minor changes in some years, and the HD trans was only in the SS, and maybe 9C1 models.
 

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Discussion Starter · #4 ·
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Thanks guys the one main reason asked was a buddy of mine has an 02 impala 3400 engine the tranny went so he bought an 03 with a 3400 both base models and his mechanic says the transmissions are not the same i told him i think his mechanic is full of crap lol
 
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