4T40 interchangeability - Transmission Forum

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4T40 interchangeability
Wednesday, April 22, 2015 8:15 AM
Does anyone know why ebay (and others) compatibility charts would list the 2003 4T40 as being different from the 2004?
I would like to replace my high mileage 2004 transmission (daily driver) with a low mileage 2003 transmission from my parts car.
Just wondering if anyone had any experience doing this exchange. Thanks.

Re: 4T40 interchangeability
Wednesday, April 22, 2015 11:19 AM
Ken Young wrote:

Does anyone know why ebay (and others) compatibility charts would list the 2003 4T40 as being different from the 2004?
I would like to replace my high mileage 2004 transmission (daily driver) with a low mileage 2003 transmission from my parts car.
Just wondering if anyone had any experience doing this exchange. Thanks.

Should bolt right up. Gm did how ever change the overall trans P/N in 04-05. Should bolt right up though.





Re: 4T40 interchangeability
Thursday, April 23, 2015 6:04 AM

Thank you. I will give it a try.
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