Dash vents

Tiny
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

Tiny
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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