Search function works awesome, btw.
Your problem is the Blower Motor Resistor needs to be replaced.
Done.
And its a PITA to replace. At least it was for me being 6'4 280lbs. I found laying on my back upside down on the seat with my feet by the head rest was the easiest way to access it.
Good luck !
Taking the seat out would have made life way easier for ya...