Cadillac Forum - Enthusiast forums for Cadillac Owners

Cadillac Forum - Enthusiast forums for Cadillac Owners (https://www.cadillacforum.com/forum/)

- Cadillac STS (https://www.cadillacforum.com/forum/cadillac-sts-17/)

- - Transmission Replacement (https://www.cadillacforum.com/forum/cadillac-sts-17/transmission-replacement-1679/)

sliksts

01-03-2007 12:43 AM

Transmission Replacement

I'm going to be replacingthe transmission in my '94 STS. Appears that it is a 4T80E transmission. Any reason a 4T80E transmission from any other year Seville or other Cadillac which has a 4T80E will not fit and work?

FLCaddytech

01-03-2007 07:15 PM

RE: Transmission Replacement

Check with the dealer or bone yard for which years and modleswill interchange.
A 2005 4t80e will not work properly with a 94 sts PCM.
The biggest difference i know of is the TCC changed around 2000.
There will be other changes through the years so you need to do your homework before you make the swap.

sliksts

01-05-2007 11:49 AM

RE: Transmission Replacement

Thanks for the response. I have found out that the 94 STS 4T80E was a one year one year only STS tranny. Different wiring harness and various other items. Going to rebuild the one I have.

All times are GMT -5. The time now is 10:05 AM.