jeric2_us

I have the above error codes and have replaced the Output Shaft Speed Sensor with no success. The truck will run fine for a bit, then the speedometer dips to 0, then back up to whatever speed I'm going, the check engine light comes on and the truck does not shift out of high gear. I clear the code and it just keeps doing the same thing. I've had it on a lift with it in gear and pulled and pushed on the wiring harness with no success. I don't think it's that. Any suggestions on what to check next?