a/c was working fine . turned it on one day and it was blowing hot air . Tried to make sure thermostat was turned to cool but still blowing hot . Also a/c is turned off and hot air is still blowing.
My ac doesnt work,its blowing HOT air all the time even when turned off. on 1998 Chevrolet S10
stuck heater control valve
poss heater control valve stuck open start there