Questions & Answers for: heater blowing cold 1990 chevy

...cold air out of the vents, floor and defroster. Consider a blocked heater core. this might be just a fault in the vents etc. but let the car warm up for about 10 minutes and see what happens

Heater wont work in my 1990 Chevy Truck My heater in my 1990 Chevy truck only blows cold air. Several things can cause this (1) low coolant (2) bad coolant valve to heater core.(3) bad damper in duct.

...heater not blowing hot air a friend of mine drives a 1996 chevy s10. the heater blows out somewhat warm air but its not cold air. she been told its the heater core goin out. any ideas... heater core ...

heater blowing cold air szarafinski1: Thanks for your suggestion to my problem . concerning my truck blowing cold air with the heater turned on. To answer your question: yes my truck blows cold air at

...heater blowing cold air. What could be the problem? You need to check your coolant level first. If it is low you have a coolant leak. No hot coolant=No heat wide open hung thermostat can cause this ...

...heater blowing cold air or is your blower motor not working? A tell-tale sign of vehicle blowing cold air is bad thermostat. Also, check your fuses under the dash first and fuse relays under the hood ...

heater blows cold air 1990 chevy celebrity- changed heater core and thermostat still blows cold looking for a n acuater(heater valve0

heater blowing cold air replaced heater core and blend door actuator. still blowing cold air. Maybe the thermostat is stuck shut. Check and see how the car warms up and if you can make sure the ...

...blowing cold air Check controls to ensure control cable is opening the heater door panel under the glovebox. Next try backflushing the cooling system to rid the heater core of any buildup. If that ...

I have 1990 chevy pickup heater display shows nothing and is not blowing unplugged unit cleaned the plug did not help the problem Could be the control head. You may want to try a used part.