1994 Chevrolet S-10 Blazer "cold air heater 2001" Questions

no heat in 2001 blazer. only blows cold air just changed thermostat and still will not blow hot air check for heater hose and or heater core clogged.

...cold air replaced thermastat next day heater blowed hot then it started blowing cold again has a new radiator and the water is not low Flush coolant system out first with prestone or peak coolant ...

...not warm up.  So the temp gauge should show cold after running the engine for 10 or 15 min.If the engine is warming up but the heater hoses are not warm, you could have air in the cooling

...cold weather. The heater blower works but only cool or barely warm air comes out. Is it possible that something got unconnected? Should I replace the thermostat? some of the vacuum lines got ...

My 2001 chevy blazer will not switch from ac to heater and continues to blow only cold air and the ac compressor continues to stay engaged. what could it be? Ac relay

...air is not freezing cold either. Check the heater control valve (usually on one or both heater hoses just ahead of where they enter the firewall) make sure that the vacuum hose going to it is ...

...cold air i had my stereo changed on my blazer the other day. before it was changed, the heater would chase you out of the vehicle. since it was changed the heater does not blow hot air. it was ...

...COLD AIR I suggest that there is a fault with the temp controler or the cooling system has an air lock within it. Check the hot water hoses from the engine to the heater matrix within the car, and if ...

...cold air Motor temp ok electric heat control ok (checked resistance of switch on dash) Need to check your Fluid level, also your hearter core take the upper and lower hose of and try to run water ...

...cold air in, chances are your heater core is clogged. 2 water hoses will be coming out of the firewall behind the distributor. Feel them both with the engine up to temperature. Both should be hot. If ...