Why does rear air blow but front air does not?
If you set the directional control for the air to flow thru the
ac-vents only, you'll probably notice that the fan is set on low or
high, and stuck there - regarding the front blower motor. The rear
probably works normally. If this is the case, it's probably the
heater blower motor RESISTOR that needs to be replaced. If not,
then you may need a new front heater blower motor. Hopefully it's
not the switch, they're expensive.... Good Luck. When the front
blower motor is stuck on low or high, it's ususlly the blower motor
resistor.