My transmission is slipping can we fix it?

I look forward to hearing from you.

Joe

Yeah. I think you are at the beginning of larger clutch issues. Unfortunately slipping in this transmission is really only caused by a mechanical issue. So unless you have a sticking solenoid it is a clutch issue. However, a sticking solenoid would most surely set a code because it is not matching the commanded gear.

Transmission valve body warped. Mildly common on the 700R4. It also sounds like the 3/4 clutch pack is failing which is very common on them when installed in a truck.
Rebuild/replace is about the only repair.
If you rebuild, add in the heavy duty 3/4 clutches and a mild shift kit to apply more pressure to 3/4 pack to keep them from slipping.

You are welcome. If it were me, I would wait until it does it basically all the time. Depending on how intermittent it is, you may be able to buy some time.