I think my transmission is going out.

You post a question and give **** all for helpful information. Is this a stock transmission in a truck or some transplant swap job?
You may think that people automatically know you. My guess is that most don't.
This is your opening post:

Went for a cruise yesterday about an hour into the drive I stopped at a light took off and the I could feel the trans slip. Once I got up to about 60 it was doing fine until I went up hill the engine felt like it was surging. My rpm’s would raise and lower. It’s a 545rfe automatic out of a 2005 Ram. It slams when going in reverse. I checked my fluid it’s good.

Where in any of this is any mention of the actual vehicle this transmission is in? There is no mention of a classic car though this is a classic car forum. Some idiot jerked people around yesterday claiming to have a 318 in a 2002 Mustang.
It’s a Hemi swap in my 67 Barracuda. It doesn’t really matter what the **** it’s in. It could be in a damn go cart.