when i run heat it only blows cold air. new thermostat and bled system from blee on 2000 Chevrolet S10

bled system from bleeder screw. temp guage reads normal. is there a common problem that i should check?

by in Oxford, ME on January 06, 2013
2 answers
ANSWER by on January 06, 2013
Maybe, What engine¿?¿?!!!! IF 4.3 what bleeder screw?? Give more info. and we can too. Hey that rhymes, forget answering questions, i am going to try poetry!
ANSWER by on January 07, 2013
Could be a multitude of things. Heater core could be plugged, heater control valve non op, or just the blend air doors malfunctioning.

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