Chevrolet 1995 Blazer Owner's Manual page 72

leave your key in the ignition in the OFF position for an extended period for
any reason, it is recommended that you disconnect the battery cable from
the battery to prevent discharging your battery.
PARK (P) -This locks your rear wheels. It's the best position to use
when you start your engine because your vehicle can't move easily.
REVERSE
(R)
-
Use this gear to back up.
NOTICE:
Shifting to REVERSE (R) while your vehicle is moving forward
could damage your transmission. Shift to REVERSE (R) only
after your vehicle is stopped.
e
To rock your vehicle back and forth to get out of snow, ice or sand
without damaging your transmission, see "If You're Stuck:
In Sand,
Mud, Ice or Snow'' in the Index.
NEUTRAL
(N)
-
In this position, your engine doesn't connect with
the wheels. To restart when you're already moving, use NEUTRAL (N)
only. Also, use NEUTRAL (N) when your vehicle is being towed.
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