All this year one by one the Heater/AC blower contols 1-5 went out, I'm on my last setting, #5. everything else works fine, I was wondering if there are any auto guys on this board that could help me out. I was thinking maybe a resister, or fuse is bad, or I can buy the part and fix it my self.
btw it a 2004 Trailblazer LT
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