GMC 1996 Sierra Owner's Manual page 89

I . Hold the brake pedal down with your right foot
and set the parking brake.
2. Move the shift lever into PARK (P) position like this:
3.
0
Pull the lever toward you.
4.
5 .
0
Move the lever up as f a - as it will go.
If you have four-wheel drive, be sure the transfer
case is in a drive gear
--
not in NEUTRAL (N).
Turn the ignition key
to
LOCK.
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).
2-27