2004 silverado, air comes out ac vents only not defroster not floor any help to correct this is greately appreciated!!!

 

if you find someone with a scanner this system stores trouble codes and gives you the chance to actuate the doors with the scan tool

could be the mode door actuator bad or the control head to many things to just pick one

 

thanks for the info brian,now where can i find a brand new 72 chevy truck that i can actually get my tools dirty on.

 

well if you can get it scaned and it is an actuator that is fairly easy job to do the control head is to except it may need programming after replaceing it

lol just so happend i sold my 54 chevy 6 months ago now that is something anyone could work on only had 4 or 5 wires running to the engine from the firewall

it even had the optional heater and turn signals inside