This is a 97 Voyager with 3.0 engine got overheated I fix the Problem 2 days later I was driving down the Hwy when the transmission started acting up like coming off 3rd gear got off the highway first it was running in 1st then I got it to go into 2nd ,any advise out there? Van has 154 K miles

Nope you will have to get the tranny scanned for codes , it is currently in limp mode (2nd gear) so it senses there is a problem somewhere , until you get it scanned at the dealer or autozone it is hard to tell . At 154K , if its the original I would be prepared for the worst...

At about at 154K, you would need a major tune-up and the if it's the orginal transmision, prpare for more nightmares.

I got the same problem and the end result is to replace the tranny...

When you overheated, the tranny fluid overheated too because the tranny fluid gets cooled in the bottom of the radiator. Try changing the tranny fluid then disconnect the battery for a couple minutes. That will reset the PCM and clear any codes you may have and maybe your problem. The others are probably right but, might be worth a try. What have you got to lose?