So this is my first time ever being on a forum type of site so I don't totally know what to do haha but yeah, in July I got my first car, my 2006 aveo. Got it off a used car lot. It ran really great except for needing to replace the thermostat. Anyways, where I live winters can get pretty rough. the first day it got super cold my air just stopped working, nothing was coming out of the vents or anything, only sometimes do I hear the fan running but no air still, yet whenever I went over a pretty big bump the air will work until the next time I start up my car. Can anyone help out with this? like could it be my air filter that needs replacing or something more? My apologies if I don't reply very well I have some bad social anxiety haha.