Question about 1991 Chevrolet C1500

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1991 C1500 Chevy Silverado

Only blows cold air when I switch the heater on. AC works fine. Water pump is new, no air bubbles coming out. Hoses to the heater are getting hot.
Anybody has any idea about this problem?
Poellas

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  • Poellas Jan 07, 2009

    How I do that

  • Angelo Attard
    Angelo Attard May 11, 2010

    heater tap may be faulty if u know where it is it should have a small hose on it check

  • yadayada
    yadayada May 11, 2010

    is the temp control blend door moving?

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Check your Heater Core

Posted on Dec 12, 2008

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