Our 2000 Montana has 64K on it. The transmission started to shift hard. Like it was slipping then would clunk into the next gear. I noticed the fluid was low. Added more and never did it again.
It does it once in a while. Once in about 500 miles or so, then is fine the next day.
Should I change the fluid, filter and add conditioner? Is there something I can look for?
Lannie