Torque converter clutch engagement

IS THER ANY WAY TO FORCE A LOCK UP THROUGH THE UNDER DASH CONNECTOR ON A 1997 CHEVY S-10 BLAZER 2 WHEEL DRIVE?

Try the GM factory scan tool, the Tech II.

IS THERE ANY WAY TO FORCE LOCK UP WITHOUT A TECH II? I KNOW YOU COULD CONNECT TERMINAL A TO F ON VEHICLES PRIOR TO OBD II FOR CLUTCH ENGAGEMENT.