2005 Chevrolet Trailblazer Q&A

2005 Chevrolet Trailblazer Question: rear ac vents

The rear ac vents do not throw air. The blower and rear AC control have been replaced. -
Answer 1
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. -
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what would cause this to happen and i also have no power to rear vents/tempeatures also.