what type of tranny service, 135kmi?

hi! just recently purchased a used 01 tribute. i don't know the service history, but there are no outstanding recalls according to the nearest dealer(60mi away). i get a shudder shifting into overdrive. worse the colder it is. i've read that the fix is a pcm flash update, and a tranny flush. but i've been told not to flush, just drain and replace. some mechanic told me to try lucas tranny additive. any suggestions? thanks!

I had an '02 Tribute with the same concern, there is a pocedure to flush with 20 Litres of Mercon V trans fliud and recalibrate the PCM. I did both and added the Lucas addiditive.... the shudder was noticable better but still there.

so if you were to do it over again, would you spend the money? and by the way Packers are the World Champs!!!! Whaaa hooooo!!!!

I would..... if money is tight though, I would just do the Lucas.

It'll have to wait until i can take off for a day. i work weird hrs, 10am to 6pm and the dealer is 60mi away. Thanks!