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GMC YUKON/XL 2021 - Keyless Ignition and Engine Stop;Start; Keyless Pushbutton Engine Start; Auto Engine Stop;Start System

GMC YUKON/XL 2021
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5
The fuel-saving Engine Stop/Start system automatically turns o the engine, referred
to as an Auto Stop, when the brake pedal is pressed and the vehicle is at a complete
stop, if certain operating conditions are met. In Auto Stop mode, the tachometer
will read AUTO STOP. When the brake pedal is released or the accelerator pedal is
pressed, the engine will restart. After parking the vehicle and turning o the engine,
the tachometer will read OFF.
The engine may remain running or restart when the vehicle is stopped if:
A minimum vehicle speed was not reached prior to stopping.
The engine or transmission is not at the required operating temperature.
The outside temperature is not in the required operating range.
The shift lever is in any gear other than Drive (D).
The battery charge is low.
The climate control system requires the engine to run based on the current settings.
The Auto Stop has reached the maximum allowed time.
AUTO ENGINE STOP/START DISABLE
Press the
$
button on the left side of the instrument panel to turn o the system.
The button indicator turns o when the system is disabled.
The Auto Engine Stop/Start system is enabled each time the vehicle is started.
See Driving and Operating in your Owner’s Manual.
AUTO ENGINE STOP/START OPERATION
KEYLESS (PUSHBUTTON) START
The Remote Keyless Entry transmitter (key fob)
must be in the vehicle to turn on the ignition.
STARTING THE ENGINE
With the vehicle in Park or Neutral, press the
brake pedal and then press and hold the
ENGINE START/STOP button to start the
engine. The green indicator on the button will
illuminate.
Note: If the key fob battery is weak, place the key fob in the center console left cupholder to
enable the engine to start. Replace the key fob battery as soon as possible.
STOPPING THE ENGINE/OFF
Shift to Park and press the ENGINE START/STOP button to turn o the engine.
ACCESSORY MODE
With the engine o and the brake pedal not depressed, press the ENGINE START/
STOP button to place the ignition in accessory mode to operate the radio, win-
dows and other accessories with the engine o. The amber button indicator will
illuminate. Press and hold the ENGINE START/STOP button for several seconds to
place the ignition in Service Mode to operate additional systems.
See Driving and Operating in your Owner’s Manual.
F
Optional equipment
F
Optional equipment

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