So i got my 97 silverado 5.0 1500 running on this 96 silverado 5.7 1500 engine harness. But the transmission wont shift out of park when its running. i dont have 1st, 4th or torque lockup.
And i have to maualy alternate between 2nd and 3rd because it wont upshift or downshift on its own. Anybody...