Jun 2, 2010 #1 R Robert Member Joined May 16, 2008 Messages 888 Reaction score 0 Points 16 when I turn the a/c unite on the lower vents work but, the upper vents are closed. this is a 2003 tailblazer.
when I turn the a/c unite on the lower vents work but, the upper vents are closed. this is a 2003 tailblazer.