LS1 GTO ecm pin 44, rev lock out

Afaik, pin 44 goes to ground at low speed or stopped to energize the lock out solenoid. I'm getting 6k ohms on the ground side with ign on and 12vcd on the other side of the solenoid. Doesn't seem to be close enough to ground to work? Original solenoid seemed stuck when I pulled it out but a few operations on the bench with a battery and it free'd up. I replaced it with new anyway. Any ideas? I don't need it to be the ecm, it's been flashed to work in my 71 vette and everything else works great. But it is an 04 gto motor/ecm.
Help would be most appreciated.