I've been having a problem with my 04 1500 series. It has dual Climate control and sometimes it will just start blowing hot air out the drivers side, but stays cold on the passengers side. If I turn the truck off and turn it back on it fixes the problem, which isn't so bad but it will sometimes just randomly do it while I'm out driving.

Anyone else had this problem.

 

same thing happened to me on my 03 Silverado, I took it to the dealer and they fixed it under warranty

 

Blend door/mixer is bad. Easy fix if you have the time.

 

^^ yep... mine does the same **** everyday. Not good when its 98*s out side and the heat comes on.

04 1500 also..

 

There's a temp sensor in the tubes on both sides (one per tube). Sounds like it went bad, or the blending door is not working.

 

my ****'s been doin the same thing. every once in a while it would fix itself but i don't think it will this time. did you ever fix it? i hear about a blend door or like an actuator or something... what the hell is it?

 

blinding door. . . it's on the passenger side

 

The blend door actuators are a very common failure

 

ha my 04 2500 does the same sh#t and its been driving me crazy. It hasnt done it in a while though. And the highest fan speed (5) doesnt work sometimes. It will blow on 4 but not on 5? Does anyone have a how to and part number for the blending door fix?

 

mine does that if i just sit there, but once the truck starts moving it blows cold...