Mechanics

CHEVROLET BLAZER HEATER PROBLEM

2000 Chevrolet Blazer • 180,000 miles

Heater will not put out heat, checked all the fuses and replaced one 10 amp, but for some reason water does not seam to be getting to the heater core? Any ideas, water relays something like that!
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December 20, 2012.



There is a heater actuator that lets either coolant in the core and/or opens the vent door for the heat. You will find controlling vacuum pots, cables and actuators on the heater box under the center of the dash. I am attaching instructions for low heat output. When it says heat output test that just menas is it putting out hot air.