Truck Repair: S/T-10 BLAZER 4HI DOESNT WORK., chevy blazer, electric shift

Question
VAN, I HAVE A 94 S/T-10 CHEVY BLAZER. IT HAS THE PUSH BUTTOM SWITCH TO ACTIVATE 4WD HIGH AND LOW. RIGHT HOW 4WD LOW WORKS AND I GET NO RESPONSE WHEN FROM 4WD HIGH. NO LIGHT OR SOUNDS OF ENGAGING. I JUST REPLACED THE VACCUM SWITCH AND STILL NOTHING. NONE OF THE MANUALS GIVES YOU ANY HELP.

I HOPE YOU CAN HELP ME.

THANKS RON

Answer
Hello Ron,
Go to this site, and see if it doesn't have some info that will help diagnose it, even if you don't change the actuator.

www.chevyasylum.com/column/tiltcol.html

If yours works in low, your actuator is fine.
I am unfamiliar with the electric shift, but I think I would be checking there.

Van