Question about 2000 Chevrolet Blazer

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My 1999 chevy blazer will not blow heat

How much would it cost to replace a heater core? do you think that's most likely what would need to be done?

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  • lannaradke Dec 16, 2008

    It is completely cold! No heat coming out at all! I am in Kansas City, it is zero degrees right now.

  • Roberta Smith
    Roberta Smith May 11, 2010

    when you say will not blow heat... do you mean it is completely cold or there is a small amount of heat ?



    and what is the outside temperature where you are



    Robert

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The blower motor works in my 99 blazer but there's no heat.there is also no heat in the lower radiator hose but is in the top hose to the thermostat.

Posted on Jan 24, 2009

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The age of the vehicle does suggest the heater core could be plugged, when the motor has been run awhile where is the temperature gauge (if it has one). ?
If i remember right it's not that bad a job to replace the heater core in those trucks... but it's been awhile for me. I would suggest some cardboard or something in front of the rad to see if it warms up at all. if so it is likely a thermostat that needs to be replaced.

Robert

Posted on Dec 16, 2008

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SOURCE: my 1999 chevy blazer will not blow heat

ther are two small tubes that open and close the valve to let in the hot air' one is from right under the carb intake and goes to the right (looking at the engine) right behind the fuse box. if there's o hole in that tube the heat will not work. just change mine becase the tube dry-rotted

Posted on Dec 04, 2011

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Posted on Jan 02, 2017

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what about electric system, is it connected could me a loose wire that disconnected on ur heater, check on that

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