Need help with code P0753

[JUNIOR-K5]

Got this code on my 99 burb 4x4 5.7 this past weekend dont know what it is read a bit about it but dont know what to do. Anyone that has had this code how did you fix it what do I need to do thanks would hate to go to a shop.

 

[British Slave]

Shift Solenoid. Will the transmission shift from 1 to 2?

 

[JUNIOR-K5]

Yup thats the weird part burb runs perfectly fine shifts great just took it on hunting trip and on way back light went on always get cylinder misfire so figured it was that but nope its shift solenoid.

 

[JUNIOR-K5]

I have a 4L60E trans and now it wont shift 3-4 it has a slight sluggish shift on 1 then second goes in fine would you guys know what sensors I need I checked online but has different ones. thanks