i have a 03 and air will only blow out the defrost and bottom vents, also upper part of dash is cracking. How hard is the dash to replace

 

Sounds like you have a broken blend door. Do a search on 'blend door' and you will find a lot of info on the problem and how to fix it.

I believe Geno's Garage sells new top piece for the dash. Cheaper than the dealer. Or you can just cover it with a carpeted dash cover.

MikeyB