i wear 3x gloves and got to mine more then one time. aka i got huge ass hands and sausage fingers.

if you take the metal cover off under the plastic under the column you can peek in and see the actuator, then reach under and take its bolts off and its dumb little plug. you will need a light under there even in the day time.

once its off you can turn the knob by hand to make it give heat or cold air, the knob only moves a 1/2 inch or so. dont try to force it.