Cadillac 1994 DeVille Owners Literature page 169

Rear Seat Air Outlet
Move the "VENT"
lever to direct air flow
from either the upper
or floor outlets.
Heated Windshield (Option)
Front De-Ice
Here's how to use your heated windshield in cold weather to remove ice
or frost quickly:
1. If any snow is piled up on the windshield, brush it away.
2. Start your Cadillac and leave it in P ("Park").
3. Push the switch. A
light will come on
to tell you it is
working.
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4. Try not to use other electrical equipment while the system is working.
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