Any trans guys here have an idea why my trans wont shift back into 1st gear after comming to a stop once the truck is warmed up. Even if i shift it manually still no first gear. But if i turn it off it will go into first but not back into first after i stop or slow down. pressure senor maybe on the valve body?

 

Yup.

Govorner Pressure Solonoid or Sensor, or both.
They are usually replaced as a pair.


phox