2-3 shift soft flare up.

When in over drive it won't shift to 3rd from 2nd, the same thing when in 3rd...
First and 2nd are cool

Shifts when you first start go up the Rd stop leave again stays in third gear

When truck sits and idles for while it won't shift from 2nd to 3rd. I have to turn it off and let it sit for while and then it will work again