GMC 2011 Sierra - Manual (Page 335)

Black plate (41,1) GMC Sierra Owner Manual - 2011
Driving and Operating 9-41
WARNING (Continued)
You could be seriously injured.
Plug the cord into a properly
grounded three-prong 110-volt AC
outlet. If the cord will not reach,
use a heavy-duty three-prong
extension cord rated for at least
15 amps.
4. Before starting the engine, be
sure to unplug and store the
cord as it was before to keep
it away from moving engine
parts. If you do not, it could
be damaged.
The length of time the heater should
remain plugged in depends on
several factors. Ask a dealer in the
area where you will be parking the
vehicle for the best advice on this.
Shifting Into Park
{
WARNING
It can be 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. 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, use the
steps that follow. With four-wheel
drive, if the transfer case is in
N (Neutral), the vehicle will be
free to roll, even if the shift lever
is in P (Park). So, be sure the
transfer case is in a drive
gear — not in N (Neutral). If you
are pulling a trailer, see Driving
Characteristics and Towing Tips
on page 9‑91.
1. Hold the brake pedal down, then
set the parking brake.
See Parking Brake on page 9‑69
for more information.
2. Move the shift lever into the
P (Park) position by pulling
the shift lever toward you and
moving it up as far as it will go.
3. Be sure the transfer case is in a
drive gear — not in N (Neutral).
4. Turn the ignition key to
LOCK/OFF.
5. Remove the key and take it with
you. If you can leave the vehicle
with the ignition key in your
hand, the vehicle is in P (Park).