LOCAT VENTS

1999 Cadillac Deville

Tiny

rdewsnap

May, 2, 2010 AT 10:12 AM

Air Conditioning problem
1999 Cadillac Deville V8 Front Wheel Drive Automatic 51000 miles

99 cad deville middle air vents not open. Defroster and floor are blowing air where is the box that I can open the middle vents

FOUND 1403 RELATED QUESTIONS

1 Answer

Tiny

Jacobandnickolas

May, 4, 2010 AT 12:23 PM

You are dealing with a vacuum leak problem. The vent doors are actuated by vacuum. If the loss of vacuum occurrs, you can't switch direction. Check under the dash for leaks. Also, with the engine running, you may get lucky and hear a hissing sound where the leak is located.

Let me know if you have other questions, and thanks for using 2carpros. Com. As far as a box, you would need to remove the entire HVAC system from under the dash.

Joe

Please login or register to post a reply.

Cabin Air Filter Replacement
Cabin Air Filter Replacement
Cabin Air Filter Replacement Honda Civic
Cabin Air Filter Replacement Chevrolet Tahoe