why does my heater blow cold air

5

Asked by Oct 30, 2015 at 03:36 AM about the 2000 Chevrolet Silverado 1500 LS Ext Cab Short Bed 4WD

Question type: Maintenance & Repair

i turn my heater on and it blows but cold air

3 Answers

76,335

A couple of things, is the temperature gage running in the normal range? No change from where it was? If so, thermostat would need to be replaced. Then there is the AC actuator module up under the dash that may be bad, It controls the vent system in the dash, part of it being the outside air blend door (flap, whatever) that controls the temperature inside the cabin. Other than that, may need a coolant flush as radiator and heater core may be plugged a bit.

1 of 1 people found this helpful.

M

I don't no what to do

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