Noisy/vibrating blower
 

Hey everyone,
Noticed while sitting idle that when I have a/c on and fan os set to high it is a bit noisy, not really itself but it makes the dash vibrate , and can feel it in brake pedal. The vibration decreases with fan speed respectively. Also its kinda funny but my wife and I joke that the truck "farts" Seems the air diverter vents in dashboard need some greasing. When you turn air on or it changes pressure they make a rubbing noise.
Anyone else have these "situations"

Vent rubbing is normal... sounds like your blower bearings may be shot however.

Ok
 

I will check out that motor, not a very expensive replacement. 👍

Just replaced mine with a OEM replacement unit since mine decided to emit smoke and electrical burnt smell then died a few days later. Simple 30 minute install.

I seem to recall the "fart" sound has been discussed and diagnosed in other threads here before. I would try a quick search on that one (should be easy to find, hopefully not a lot of other "fart" discussions going on here). I believe it was something to do with the blend doors or motors.