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Ask Dave Nova Your Own Question
Dave Nova
Dave Nova, Buick Technician
Category: Buick
Satisfied Customers: 1808
Experience:  ASE Master Certification. GM World Class Certification
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Airconditor blows in defroster only : dampers wont change

Customer Question

airconditor blows in defroster only
JA: Sometimes things that you think will be really complicated end up being easy to fix with Buick. The Buick Mechanic I'm going to connect you with knows all the tricks and shortcuts. Tell me a bit more about what's going on so he can help you best.
Customer: dampers wont change from heat to air to defrost
JA: How many miles are on the car? Have you noticed any leaking lately?
Customer: 130000 no
JA: Are you hoping to fix this yourself?
Customer: yes
JA: Great! What have you tried so far?
Customer: tried to remove dash
JA: Is there anything else important you think the Buick Mechanic should know about your Buick?
Customer: no
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Buick Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: Buick
Expert:  Lou P. replied 1 year ago.

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.

Customer: replied 1 year ago.
2008 lucerne
Expert:  Lou P. replied 1 year ago.

ok thanks, ***** ***** get up a diagram, those are all electrical.

Expert:  Lou P. replied 1 year ago.

do you have the manual or automatic control panel?

Expert:  Lou P. replied 1 year ago.

The auto has the digital display and the auto setting function, the manual does not. it has 3 knobs.