Check engine light on error code P1762

I recently experienced a problem with shifting on my vehicle listed above. My vehicle started really good but when I shifted into drive, it will rev up and the rpm would increase but the vehicle would move slowly. When I get it into good running speed, I can tell and feel the engine not shifting gears and the rpm would increase but vehicle would not speed up. I brought it to the shop, the mechanic used a an OBD scanner and error code is P1762. The mechanic said it was the Governor sensor and solenoid. I did get the parts and had it replaced, changed oil, cleaned the oil pan too and replaced the filter. Check engine light is still on and I went on a test drive. The vehicle did move a little better, but it felt that I had to put more gas on the pedal to get it moving. I stopped and put the gear in reverse, it jerked before it went on reverse. So I parked it until the next day. The next day I tried to start the vehicle, but would not start. Check Engine light still on. A few hours later, I tried to start it again and it worked. I drove it to check if I had put enough fluid in the transmission. Still had a difference in changing gears. Parked it at work, and after work I tried starting the vehicle again, it would not start. Waited until the next day to crank it up. It started but died after a few seconds. Could there be another problem with the transmission that prevents the car from starting? And What should I do? Since I could not get it to the shop, I did not get a diagnostic test on the vehicle.