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Cadillac
Deville
Climate Control
Vent
Dash vents
CADILLACDAVE1
MEMBER
1999 CADILLAC DEVILLE
4.6L
V8
FWD
AUTOMATIC
180,000 MILES
Heater or air conditioner functions properly, but blower only blows through floor vent or defroster. Wont switch to dash vents.
Tuesday, July 19th, 2016 AT 7:37 AM
1 Reply
HMAC300
MECHANIC
48,601 POSTS
Check for a vacuum leak or vacuum motor not getting vacuum to open to proper position it can start at control or engine or a hose.
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Tuesday, July 19th, 2016 AT 9:26 AM
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