My 97 gtp is currently at the tranny shop. I had a new tranny put in last fall and it totally quit working this summer (it's under warranty so no $$ involved this time). They said the line pressure in the car was extremely high and tore things up. So they said they replaced a few things and put the tranny back in but it is still showing line pressure of over 220 psi at idle and 300 in reverse. They say I need a new pcm as the tranny is not getting a signal to control the pressure solenoid. Does this sound right?