RepairPal's independent, master mechanics track down the best of the best in auto repair. Learn more »
Get the latest advice about your car
The rear ac vents do not throw air. The blower and rear AC control have been replaced.
Is the rear blower working? If not then the system will need to be properly diagnosed. If the rear blower is working and no air is coming out of the vents then begin looking for a blockage in air distribution system.