Tranny compatibility question

Hi all,

I have a 95 Grand Prix 3.1L Auto that needs a new trans. I also have a parts car 99 Chevy Lumina car 3.1L Auto. Will this trans fit my grand prix. The engines are exactly the same and am curious about the trans.

Thanks!
Chris

No! The transmissions are different. They may bolt up but the 99 is controlled by a computer where the 95 is not.

Thanks! i appreciate the help.

Yes if the gear ratio is the same and there is a metal tag near the final drive cover to confirm that.All that needs to be changed is the final drive and sometimes the electrical.