Buick Repair Questions? Ask a Mechanic for Answers ASAP
Hello, what year and model of Buick do you have? this usually means there is poor or no vacuum to the ac system, the default is always defrost for safety so the windshield does not fog up, but depending on the year and model depends on if its vacuum actuated or electronically actuated, so let me know and i can get you fixed up. Lou P.
ok thanks, ***** ***** get up a diagram, those are all electrical.
do you have the manual or automatic control panel?
The auto has the digital display and the auto setting function, the manual does not. it has 3 knobs.