edward361

I'm getting full line pressure from park to 1st and 1st to 2nd, the trans. code is P0748 which is the pressure control solenoid. I replaced the PCS and also replaced the TCC enable solenoid and wiring harness in the trans. This did not solve the problem. This engine & tranny is out of a 99 camero ss and is in my street rod, I used a painless performance wiring harness. the trans. always worked this way since the install. everything else seems to be working good. I even ran power through the harness to make sure there were no breaks in the harness. I also checked all the resistance in the rest of the solenoids and thay all checked out good. Does anybody have any suggestions. Thanks!

performabuilt

iTrader: (25)

PO748 is a PCS electrical code if you have absolutley verified a complete curcuit I would have to look at the controller at that point

edward361

I've tried a diffrent PCM and it acts the same.