ac/ heater on 2001 Chevrolet Silverado 2500 HD

I tried to turn on my ac but it blows hot air like the heater is stuck on the ac lines under the hood are cold like the ac is working just not getting through

by in Boyd, TX on March 15, 2010
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1 answer 2 comments
ANSWER by , March 16, 2010
This may be an inoperative blend air door. The blend air door directs the air flow through the heater core and the a/c evaporator, so if the door is not working the A/C system may be functioning properly, but the air will be flowing through the heater core.
COMMENT by , March 18, 2010
Thanks that is what happened I took of the blend air accuator and turned the door manually works great
COMMENT by , August 19, 2010