Cadillac 2005 DeVille Owner's Manual page 91

Ensure the shift lever is fully in PARK (P) before starting
the engine. Your vehicle has an automatic transaxle shift
lock control system. You have to fully apply your regular
brakes before you can shift from PARK (P) while the
ignition key is in ON. If you cannot shift out of PARK (P),
ease pressure on the shift lever. Push the shift lever all
the way into PARK (P) as you maintain brake application.
Then move the shift lever into the gear you wish. See
Shifting Out of Park (P) on page 2-34.
REVERSE (R): Use this gear to back up.
Notice: Shifting to REVERSE (R) while your vehicle
is moving forward could damage the transaxle. The
repairs would not be covered by your warranty. Shift
to REVERSE (R) only after your vehicle is stopped.
Also use this gear to rock your vehicle back and forth to
get out of snow, ice or sand without damaging your
transaxle. See If You Are Stuck: In Sand, Mud, Ice or
Snow on page 4-29 for additional information.
NEUTRAL (N): In this position, the engine does not
connect with the wheels. To restart when you are
already moving, use NEUTRAL (N) only. Also, use
NEUTRAL (N) when your vehicle is being towed.
CAUTION:
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Shifting into a drive gear while your engine is
running at high speed is dangerous. Unless
your foot is firmly on the brake pedal, your
vehicle could move very rapidly. You could
lose control and hit people or objects. Do not
shift into a drive gear while your engine is
running at high speed.
Notice: Shifting out of PARK (P) or NEUTRAL (N)
with the engine racing may damage the transaxle.
The repairs would not be covered by your warranty.
Be sure the engine is not racing when shifting
your vehicle.
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