Hey guys has anyone heard their mode door squeak before. When I turn on my A/C and the mode door opens there is a squeak at the very end of them opening all the way to the front vent position. I sprayed the actuator mechanism but didn’t change anything. It seems like it might be rubbing on the hvac wall. If I run the ac for awhile And the hvac box gets cold it won’t do it until it warms back up. Should I spray some graphite grease on the door itself so it won’t collect dust. Everything work fine with it. It’s on a 2011 Silverado. Here is the video

 

it's a worth a shot! You have nothing to lose.

I wouldn't use graphite though, because it conducts electricity.

Silicone isn't conductive and withstands high temperatures.

 

I got to listening to it and it really sounds like it is coming from the actuator itself. I got a new actuator coming it will be here tomorrow.