I have a 2000 Chevy 2500 truck that has started shifting real hard through all gears including overdrive. I checked for codes and got p0748 Pressure control Solenoid. So I bought one and installed it. Three hours and $70 later I still have the same problem. I need help, suggestions or something!

 

check your wiring maybe?

 

That code is PCS electrical , Its likley a wiring issue since you changed the solenoid check the plug and the wires going to it

 

Check the transplug and trans internal harness. I have seen the pin burnout of the connector sheel many many times. Cuases this exact complaint to.

 

I was hoping everyone was not going to say wiring. That is the hardest thing to track down and fix. Where is the connector sheel? Hopefully on the outside of the trans.

 

Its the round plug on the drivers side, about the size of a silver dollar.take it off and look inside for any signs of a pin plug burning , Then if not plug it in several times and clear code and try again,

 

You guys are the Bomb! Pulled the connector loose, blew it out a little, reconnected it, cleared the code and now my trans is back to normal.
That connector just pulled loose, is there suppose to be a clip or something holding it together?

 

It should hold itself on just fine but I have seen the pins and conectors corrode a little and cause similar issues.
Great you all fixed

 

Shell not Sheel. Horriable typing skils somedays. Depends on how stiff the hands are from wrenching all day. Anyways i would get the repair plug from GM parts.