Hi guys and gal,

My blower only blows on 1 and 4
I'm wondering if my blower resistance is really the culprit because sometimes 2 and 3 work, but only if the knob is in that position when I turn on ignition. Anyone know how the knob itself functions?

Also, there seems to be heating at the passenger side even with both knobs (driver/passenger) set to cold. Is there a separate valve for the passenger's side that's stuck somewhere?