I swapped a mint 4t65e from a 07 lacross into my 2000 Park ave. I swapped the valve body, channel plate, pump, manifold pressure switch, and a 3.29 single chain gear set into the 07 trans, along with the wiring harness. They both have an internal mode switch. The issue is that my gear selector now seems to go Park-neutral-reverse-neutral-manual third. I have no overdrive. It's not a cable issue, because I took it off and switched the gears by hand, same thing. I'm outta ideas. Any one got one?