GMC 2012 Sierra Denali Owner's Manual page 274

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It can be dangerous to get out
of the vehicle if the automatic
transmission shift lever is not fully
in P (Park) with the parking brake
firmly set. The vehicle can roll.
Do not leave the 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 the
vehicle will not move, even when
you are on fairly level ground,
always set the parking brake and
move the shift lever to P (Park).
Follow the proper steps to be sure
the vehicle will not move. See
If parking on a hill and pulling a
trailer, see
The vehicle has an automatic
transmission with an electronic shift
position indicator within the
instrument panel cluster. The
electronic shift position indicator
displays when the shift lever is
moved out of P (Park).
There are several different positions
for the shift lever.
See Range Selection Mode under
.
This position locks the
rear wheels. It is the best position
to use when you start the engine
.
because the vehicle cannot
move easily.
When parked on a hill, especially
when the vehicle has a heavy load,
you may notice an increase in the
effort to shift out of P (Park). See
Torque Lock under
information.
It is dangerous to get out of the
vehicle if the shift lever is not fully
in P (Park) with the parking brake
firmly set. The vehicle can roll.
Do not leave the 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 the
vehicle will not move, even when
.
you are on fairly level ground,
always set the parking brake and
move the shift lever to P (Park).
for more
(Continued)

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