Rear Temp Control On 04 Tahoe

[04_5.3]

The motor that controls the rear temp does not work it stays on cool. I looked at it and it looked good I ohm it out and ohm the other one that controls the vent and they both ohm around 40 ohm's. So anyone know what is wrong with it. Where is a good place to get one

[Jennabear]

There was a TSB out for the HVAC modules, it is located behind the glove compartment, and there is another one that can go bad that is in the passenger pillar. Another issue is the blower door sticking open/close, if you turn the knob all the way to cold, then all the way to hot (hitting both extremes) this should wiggle the door open.

[04_5.3]

I tried moving it from hot and cold it would go to hot and all of this stuff is in the pass side in the rear of my tahoe