Two days ago I drove to work as usual and the truck was running fine. When I got off work later that day I tried to leave the parking lot and the truck wouldn't shift into second gear. It would rev up to 4000rpm then you have let off the gas in order for it to shift to second. Now it does the same thing constantly. I have only owned the truck for a year now and have never put what you would call strain on the tranny by pulling any recreational vehicles or anything of that nature. I only drive to work and back every day, which is about a 30 mile roundtrip and then it is parked for the rest of the night, for I work very long hours.