Ok i now have a 2001 Chevy express with a 6.5 diesel with a blown transmission and a 2002 express 2500 with a 5.7 with a blown engine... will the transmission from the 2500 being a 4l80e option MT1 fit the 2001 with the 6.5 also showing as a 4l80e option MT1

 

Should be fine to swap like for like.

 

Umm

 

well found out that i cannot put the transmission from the 2002 express van into the 2001 express van as they are diffrent.... on the hunt for a 2001 only 4l80e

 

So it is year model difference and not diesel to gasser difference?

I believe I read somewhere that the torque converter is different, but I'm not sure of anything else.

 

according to the dealer the trannys are diffrent. not sure how or what but thats what they said... i think im going to look into this a little further