Buick Century 2003 Owner's Manual page 97

1. Hold the brake pedal down with your right foot and
set the parking brake with your left foot.
2. Move the shift lever into PARK (P) like this:
•
Pull the lever toward you.
•
Move the lever up as far as it will go.
3. Turn the ignition key to OFF.
4. Remove the key and take it with you. If you can
leave your vehicle with the ignition key in your
hand, your vehicle is in PARK (P).
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