What is unique on the 2000 is probably just the TCM electronics - that could be programming or could be how it communicates with the PCM I would think. I doubt it affects the mechanical or hydraulics of the transmission but I could be wrong. Glad it worked out for you.bill buttermore said:Thanks, Roy. I chickened out and purchased a used trans for the '00. I noticed when I performed a search on car-part.com that only 2000 model year came back. I was told by the seller (confirming Mark's comment) that the electronics package on the 2000 is unique to that year and that is why. The '98 trans is still useful to me as a spare for our daily driver.