Chevrolet 2003 Blazer Owner's Manual page 103

Move the lever up as far as it will go.
3.
Turn the ignition key to LOCK.
4. Remove the key and take it with you. If you can
leave your vehicle with the key, your vehicle is in
PARK (P).
Console Shift Lever
1. Hold the brake pedal down with your right foot and
2. Move the shift lever into PARK (P) position like this:
set the parking brake.
Hold in the button on the lever.
0
Push the lever all the way toward the front of the
vehicle.
3. Turn the ignition key to LOCK.
4. Remove the key and take it with you. If you can
leave your vehicle with the key, your vehicle is in
PARK (P).
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