Cadillac 1994 DeVille Owners Literature page 110

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Steering Column Shift Lever
1. Hold the brake pedal down with your right foot.
2. Move the shift lever into "P" (Park) position like this:
3.
4.
5.
0
Pull the lever
toward you.
0
Move the lever
up as far as it
will go.
With your right foot still holding the brake pedal down, set the
parking brake.
Move the ignition key to "Lock."
Remove the key and take it with you. If you can walk away from your
vehicle with the ignition key in your hand, your vehicle is in "P" (Park).
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