Cadillac 1993 Fleetwood Owners Literature page 102

To set the parking brake:
Hold the regular brake pedal down with your right foot. Push down the
parking brake pedal with your left foot. If the ignition is on, the brake
system warning light will come on.
When you move out of "P" (Park) or
"N"
(Neutral), if your engine is
running, your parking brake should go off. If it doesn't, you have a
parking brake problem and should have it fixed. In the meantime, you
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can still release your parking brake. Just pull on the manual release lever,
,
as shown.
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CAUTION:
If your hand or arm is in the way of the pedal, you could be
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hurt. The pedal springs back quickly. Keep your hand and arm
away when you use the manual release lever.
NOTICE:
Driving with the parking brake on can cause your real ulakes to
overheat. You may have to replace them, and you could also
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damage other parts of your vehicle.
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