a/c heater controls don't work
 

Newbie here, trying to help out my son, he has a 1991 blazer 4dr 4.3efi 4x4, the controls for the fan,heat,a/c,defroster will work no air blows out nothing not even a noise. I'm thinking fuse but which one and where.

RE: a/c heater controls don't work
 

Under the dash like older vehicles and they are labeled, a flashlight and needlenose pliers come in handy. BUT its more then likely that the blower motor is fried and thats under the hood, passender side where the firewall meets the fender, behind the overflow tank.

RE: a/c heater controls don't work
 

sounds like your problem may have a solution----just be careful in future; you might get you're head tore off if you ask a technical question in the new member area........:D

WELCOME AND GOOD LUCK!!! vote for me for ROTM [8D]