Chevrolet 2002 Tahoe Owner's Manual page 109

Your vehicle is equipped with an automatic transmission
and features an electronic shift position indicator within
the instrument panel cluster. This display must be
powered anytime the shift lever is capable of being
moved out of PARK (P). This means that if your key is
in OFF, rather than LOCK, there will be a small current
drain on your battery which could discharge your battery
over a period of time. If you have to leave your key in
the ignition in OFF for an extended period, it is
recommended that you remove the IGN 0 fuse from the
instrument panel fuse block. See "Fuses and Circuit
Breakers" in the Index.
PARK (P): This position locks your rear wheels. It's the
best position to use when you start your engine because
your vehicle can't move easily.
CAUTION:
It is dangerous to get out of your vehicle if the
shift lever is not fully in PARK (P) with the
parking brake firmly set. Your vehicle can roll.
Don't leave your vehicle when the engine is
running unless you have to. If you have left the
engine running, the vehicle can move suddenly.
You or others could be injured. To be sure your
vehicle won't move, even when you're on fairly
level ground, always set your parking brake and
move the shift lever to PARK (P).
-
If you have four wheel drive, your vehicle will
--
be free to roll even if your shift lever is in
--
PARK (P) if your transfer case is in NEUTRAL.
So, be sure the transfer case is in a drive gear,
-
two wheel high (2H) or four
- --
four wheel low (4L) not in NEUTRAL. See
"Shifting Into PARK (P)" in the Index.
See "Shifting Into PARK (P)" in the Index.
If you're pulling a trailer, see "Towing a Trailer"
in the Index.
-
wheel high (4H) or
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