The other night it got a little cool outside, so I tried the heater, it's a summer car, so the heat is seldom ever used. I believe I had the vent control on floor, AC off. The blower was on 3, and the heat/cool dial was at the 2 o'clock position. As soon as I turned the blower up to 4, the heat/cool dial moved itself to the 5 o'clock position. It's not supposed to do that by itself

I tried to turn it back to where I had it, but it had other plans... THe **** was fighting with me, so I turned the blower back to 2, and it let me turn the heat/cool dial where I wanted it. I turned the blower back to 4, and zzzip, it went back up to the 5 o'clock position.

WTF

 

lol, dang gremlins. sounds like the door is somehow being pushed by the fan. heres some info on heaters. see if anything there that helps https://camaroforums.com/forum/lt1-l...84/#post587081