The link in Chevy SS doesn't work. Any other source? 96 Wagon. I am looking also to see when it shifts. I see the tach display in the A/C panel and it looks like it goes into 4th around 54mph and the torque converter locks up depending on throttle. But I spend 90% of my time around 35-50 in town and would like the torque converter to lock at low throttle in 3rd. Possible? I wouldn't mind using a switch.