2007 Ford F-150 XLT 8 Cyl 5.40L
Body & Interior
Two of the four speeds for the fan for ac/heat doesn't work.
Turning the knob to speeds 1 and 2 doesn't blow any air to the cabin. 3 and 4 works. What could be the problem? Is it expensive to fix?
Replace the HVAC blower motor resistor.