Retained Accessory; Power (Rap); Engine Coolant Heater - GMC Sierra Limited 1500 2019 Owner's Manual

One of the following actions will turn
off the fast idle:
Pressing the brake.
Selecting the cruise control
cancel button.
Releasing the parking brake.
Moving the transmission shift
lever out of P (Park) or
N (Neutral).
Selecting the cruise control on/
off button when it was
previously on.
Pressing the cruise control SET-
button a second time.
Pressing the accelerator more
than one-quarter of the
way down.
Turning the ignition off.

Retained Accessory

Power (RAP)

The following vehicle accessories
can be used for up to 10 minutes
after the engine is turned off:
Audio System
Power Windows
OnStar System (if equipped)
Sunroof (if equipped)
These features work when the key
is in ON/RUN or ACC/
ACCESSORY. Once the key is
turned from ON/RUN to LOCK/OFF,
the windows and sunroof continue
to work up to 10 minutes or until any
door is opened. The radio continues
to work for up to 10 minutes or until
the driver door is opened.
Accessory Power Outlets (APOs)
The vehicle may have Accessory
Power Outlets (APOs) in several
locations. See Power Outlets 0 130.
The APOs in the console or center
seat position are powered by
Retained Accessory Power (RAP).
They will continue to work for up to
10 minutes after the key is turned
from ON/RUN to LOCK/OFF, or until
the driver door is opened.
Driving and Operating
The APOs on the center stack come
from the factory powered directly
from the vehicle battery, and supply
accessory power at all times,
regardless of ignition key position.
If electronic items are left plugged
into these APOs for long periods of
time with the vehicle off, the vehicle
battery could be drained. The
vehicle may not start if the battery is
allowed to drain for an extended
period of time.

Engine Coolant Heater

The engine heater can provide
easier starting and better fuel
economy during engine warm-up in
cold weather conditions at or below
18 °C (0 °F). Vehicles with an
engine heater should be plugged in
at least four hours before starting.
An internal thermostat in the
plug-end of the cord may exist,
which will prevent engine coolant
heater operation at temperatures
above 18 °C (0 °F).
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