ac/ heater on 2001 Chevrolet Silverado 2500 HD

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
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
(1) Answer
(2) Comments
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.
Thanks that is what happened I took of the blend air accuator and turned the door manually works great