Ok so my wife’s 09 Tahoe ac is giving some problems. It has the duel zone temp control. The passenger side works great. But the driver side will only blow warm air. You can change the temperature but still only blows warm. What needs replacing and where is it located?
Thanks

I’m guessing the driver side blend door actuator don’t have a clue where it’s located on that model. You tube is your friend.

That would be my guess - blend door.

X3 on blend door

my 07 silverado just done the same thing i changed the drivers side blend door actuator and is working fine now. Mine is a 07 classic ( cat-eye) but the actuator was under the dash in the center of the hump. Damn thing was 130.00 at oreily's.

I bought mine from Rock Auto they are hard to beat.

Rock auto. I agree

Blend door actuator, rock auto, do this yourself it’s not too bad.

Good deal. So is there just one of these or one for each side?

There is several air actuators all the same 2 of them control the vents and the rest controll the defrost