Buick 1994 Century Owner's Manual page 84

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1 (First Gear)
This position gives you even more power (but lower
fuel economy) than "2." You can use it on very steep
hills, or in deep snow or mud. If the selector lever is
put in "1," the transaxle won't shift into first gear
until the vehicle is going slowly enough.
NOTICE:
If your front wheels can't rotate, don't try to
drive. This might happen if you were stuck in
very deep sand or mud or were up against
a solid
object. You could damage your transaxle.
Also, if you stop when going uphill, don't hold
your vehicle there with only the accelerator
pedal. This could overheat and damage the
transaxle. Use your brakes to hold your vehicle
in position on a hill.
Parking Brake
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.
To release the parking
brake: Hold the regular
brake pedal down. Pull the
brake release lever.