Transmission not shifting properly

Okay, last week I had to change the power steering pump. After I was done with that my check engine light came on for transmission slipping component. I cleared the code and continued to drive the truck with absolutely no problems at all. I'm trying to get the truck inspected so I needed to put tires on to be legal. All monitors were set, no check engine light on. I was so excited. Since I've owned the truck the ABS light has been on and the parking brake light has been on and never had any effect on the truck. Well, yesterday I swapped the tires and rims on the truck and I drove the truck almost all the way home when I stopped at the stop sign took off and the truck shifted from first to second but then when trying to shift from second to third the RPMs got up to about 2,300 and then it was like the truck went into neutral. It revved right up to like 4 grand sounded like it had a lot of torque so I let off the gas and applied little to no gas and the speed continued to climb. Anyone have any idea what or where to start to find the issue to fix this problem?