Front air is stuck on hot. Rear air works fine. I have replaced the actuator itself. Mechanic could hook up a computer directly to the actuator and get it to switch. I can manually turn the post that switches the blend door from hot to cold. I suspect something in the controls or the wiring.
SOURCE: AC is blowing out HOT air... How to get to the Blend Door to check it?
No, you just need to fill freon gas.
SOURCE: 2004 suburban rear a/c only blows hot air
ase mechanic:
there are separate actuators for the blend doors. one for heat and one for cool. they work opposite and in conjuction with each other, if that makes any sense. ones open, ones close, for each different climate. sounds like the the cold one isn't opening in the rear.
SOURCE: 99 suburban,rear brake lights and turn signals
blinker switch can go bad everything runs through the switch
SOURCE: 2004 Suburban rear blower motor not working !
You will have a blower motor resistor that controls power and the speeds to the blower motor it will be by the blower motor and is cheap new.
SOURCE: Replace Blend door on 2004 Suburban
My problem is hot air on the drivers side, cold on Pass when the AC is on...2004 Sub
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