Any help would be much appercaited!

My parents have a 2005 Trailblazer and this afternoon when I started it the front ac was not blowing. We could feel cold air coming from the vents, but it was not blowing. The rear vents were working fine and on full blast.

I would appercaite any help that I can get. My parents are visiting Arizona and will so be driving back to North Dakota and are worried about not being able to use the defrost.

Thanks again!!!

 

Check the fuse! My trailblazer did the same thing until I replaced the fuse. It would work on 1, and 3, but for some reason the rest of the fan speeds didn't work. I replaced the fuse, and bam, it worked perfectly.