2001 Chevrolet Silverado "heater blow hot" Questions

heater to blow hot. When it finally dose blow hot it will stay there for about ten minutes then it blows cold for about a minute and then hot again. The whole time it does this the temp gauge is still

...heater will blow cold air Possibly the heater core is 90% blocked. open enough to draw hot water in, (hose feels hot) but not enough volume to provide heat from very cold air, 10% hot water gets cold ...

...hot air The heater does come on but blows cold air. Could this be the temperature gauge? Thanks! No your thermostat is stuck open which will not hurt the engine. but needs to be replaced, the ...

a stuck open thermostat in the engine cooling system. Also check under the hood for hot coolant in and out of the heater cores hoses, those are the small hoses going to the firewall and into the truck

...heater set to maximum, rapidly squeeze and release the hot hose for about fifteen seconds.I just did this to my truck and it "Burped" the heater core. I got instant LAVA HOT air!! I hope this

heater blows hot air but only on high ? it is the cold season now and this just happened.as i said it blows on the high setting but none of the others.and it will blow heat replace blower motor ...

blow out hot air as if the thermostat was turned up as hot as it will go. Have not been able to find any blown fuses. Is there a separate thermostat, other than the engine, for the heating and cooling

blow hot heater air, the volume of air is also much less when on the heater setting Sounds like there is blockage in the vent system,or the tube is detached somewhere from the transfer box to the vent

heater stopped blowing hot air Have you checked the coolant level? If you are low or out of coolant, no hot air! Good luck !

...heater keeps blowing heat in the cab of truck and sometimes wont blow hot air at all. I have to discconect negative on battery when parked so i dont drain battery. Thanks. replace the blower motor ...