I have a 95 4 dr Sidekick, all stock 16v and 4 spd auto with low miles. It works great but shifts hard from 1st to 2nd and from 2nd to 1st. 2-3-4 are all regular shifts. It does this after it warms up a little, shifts like normal when cold. Took it to my trans shop for a fluid flush and he wasnt sure what it was without pulling the valve body off. It has no transmission codes. Has anyone experienced this or have any ideas how to fix it?

Thanks,
Erik in Portland 

Valve body needs a go thru, sticking valves hang and cause these issues.

I helped my brother with his, not too much trouble, just keep track of
where the parts go and watch for check balls when the to sections are
popped apart, and where they go to

Wild