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JHoop, Cadillac Technician
Category: Cadillac
Satisfied Customers: 5446
Experience:  14 Year Engine Builder,16 years as a Tech HvyLine, Suspension, Electrical, Brakes, 6 Year Shop Owner
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92 Fleetwood: cold air blowing..rear seat..defroster..easy fix

Resolved Question:

92 Fleetwood Cadillac, AC unit works but AC vents are closed, cold air blowing out 0f rear seat vent and defroster, need an easy fix. ??? Thanks Bob
Submitted: 6 years ago.
Category: Cadillac
Expert:  JHoop replied 6 years ago.
Hello , my name isXXXXX you for choosing

Is this a RWD model?
Customer: replied 6 years ago.
Have no idea what RWD is but if you are refering to drive it's Front Wheel Drive
Expert:  JHoop replied 6 years ago.
There is a vacuum tube that goes into the firewall that supplies vacuum to the HVAC unit.

It has become undone or there is a leaking vacuum hose somewhere under the hood.
Customer: replied 6 years ago.
where, do you have a diagram of vacuum line location, or a suggestion of where. ???
Expert:  JHoop replied 6 years ago.
Look near the firewall. There will be a small black plastic tube coming out of it. Look where any A/c tubes are.

Follow the line to where it connects to the engine.

Fix the leak.
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