2000 Chevrolet S10 Q&A

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

bled system from bleeder screw. temp guage reads normal. is there a common problem that i should check? -
Answer 1
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 2
Could be a multitude of things. Heater core could be plugged, heater control valve non op, or just the blend air doors malfunctioning. -