Question about 2000 Chevrolet Silverado 1500

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Heater does not blow hot air on full heat setting

I' ve been having heater problems for abuot a month now. working, then not working. gauges show good temp,i've replaces thermostat and coolant. and still have luke warm air coming out on full heat.
and the top hose is hot after running it.
what could be the problem?

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  • John Lindley
    John Lindley Feb 05, 2009

    I have this problem too on my 2000 Silverado 1500 5.3L

  • Anonymous Mar 26, 2014

    will not put out hot air when dial is set to hot will only put out luke warm air

  • Anonymous Mar 27, 2014

    There is new coolant and it doesn't run hot, so I think the thermostat is working fine.I

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  • Chevrolet Master
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The problem is caused by the motor that operates the air temp blend door motor in the heating ducts, it blends air between AC and heater core tro give desired outlet temp.

Posted on Dec 12, 2008

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http://technoanswers.blogspot.com/2012/01/heater-blows-intermittently-and-temp.html

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