Retained Accessory; Power (Rap); Engine Coolant Heater - Chevrolet Express 2020 Owner's Manual

168 Driving and Operating
To control the fast idle:
To enable the Fast Idle System,
press and release the cruise
control on/off button and ensure
that the switch indicator light
is lit.
Press and release the cruise
control SET- button. Engine
speed will be held at
approximately 1200 rpm.
When the fast idle is active, the
Driver Information Center (DIC) will
display FAST IDLE ON.
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)

These vehicle accessories can be
used for up to 10 minutes after the
engine is turned off:
Audio System
Power Windows (if equipped)
These features will work when the
ignition is on or in ACC/
ACCESSORY. Once the ignition is
turned from on to off, power to the
radio and power windows will
continue to work for 10 minutes or
until the driver door is opened.

Engine Coolant Heater

If the vehicle has a diesel engine,
see the Duramax diesel
supplement.
Warning
Do not plug in the engine block
heater while the vehicle is parked
in a garage or under a carport.
Property damage or personal
injury may result. Always park the
vehicle in a clear open area away
from buildings or structures.
The engine coolant 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 coolant 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).