I searched the threads and could not find anything. It just started today on the ride home from work. It has a loud hum when the defrost speed is set to high. It has a low hum in the middle speed setting. It gets louder the higher I turn the fan. I had this issue in my 2014 Silverado and it…

https://www.jeepgladiatorforum.com/forum/threads/blower-motor-noisy-when-defrost-set-on-high.88428/