2018 GMC SIERRA park assist

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Refer to your Owner’s Manual to learn about the information being relayed by the lights, gauges and indicators on the instrument cluster.
See In Brief in your Owner’s Manual.
Driver’s Heated/Vented Seat Buttons
GMC Infotainment System Touch ScreenPassenger’s Heated/Vented Seat ButtonsClimate Controls
Accessory Power Outlets
Adjustable Pedals Switch/Traction Control and StabiliTrak Button/Cargo Box Lamp Button
110V OutletUSB PortsWireless Charging PadF
Antilock Brake System
Diesel Exhaust Brake (diesel models only)
Low Tire Pressure (single rear wheel models only)
Door Ajar
Oil Pressure
Charging System
Safety Belt Reminder
Lane Keep Assist
F Optional equipment
Front and Rear Parking AssistF/ Lane Keep AssistF(LD models)/ Lane Departure WarningF(HD models)/Hill Descent ControlF/Diesel Exhaust Brake (if equipped) Buttons
Note: Diesel model shown.

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Safety Alert SeatF
The driver’s seat pulses — left side, right side, or simultaneousl\
y — to alert the driver of potential hazards.
Audible notification may be selected instead of Safety Alert Seat puls\
ing notification. To change the alert setting, go to Settings > Vehicle > Collision/Detection\
Systems > Alert Type.
Forward Collision AlertF
The Vehicle Ahead indicator is green when a vehicle is detected and is amber when following a vehicle ahead much too closely. When approach-ing a vehicle directly ahead too rapidly, a red alert flashes on the windshield and the Safety Alert Seat pulses or beeps sound (if selected).
Press the Collision Alert button on the left side of the steering wheel to set the alert timing to Far, Medium, Near, or Off.
Low-Speed Forward Automatic BrakingF (LD Models Only)
The brakes may be applied automatically in potential collision situation\
s to help reduce damage or help avoid collisions with vehicles directly ahead.
To turn the system on or off, go to Settings > Vehicle > Collision/Detec\
tion Systems > Auto Collision Preparation.
Lane Keep Assist with Lane Departure WarningF (LD Models Only)
The system may help avoid collisions due to unintentional lane departure\
s. The Lane Keep Assist indicator is green if the system is available to assist. If the v\
ehicle approaches a detected lane marking without using a turn signal in that direction, the system may assist by gently turning the steering wheel and displaying an amber .
If active driver steering is not detected, the amber may flash and the Safety Alert Seat may pulse or beeps may sound (if selected) on the side of the departure di\
rection as the lane marking is crossed. In order to use this system safely, the driver needs to stee\
r and be in complete control of the vehicle.
Press the Lane Keep Assist button on the center of the instrument panel to turn the
system on or off.
Lane Departure WarningF (HD Models Only)
When crossing a detected lane marking without using a turn signal in tha\
t direction, the system flashes an amber  indicator on the instrument cluster and the Safety Alert Seat pulses or\
beeps sound (if selected) on the side of the lane departure direction.
Press the Lane Departure Warning button on the center of the instrument panel to turn the system on or off.
Rear Vision Camera
When the vehicle is in Reverse, a view of the area behind the vehicle di\
splays on the infotainment system. Vehicle speed must be below 5 mph.
To turn the Guidelines or Rear Park Assist Symbols on or off, go to Settings > Rear Camera.
DRIVER ASSISTANCE SYSTEMS
F Optional equipment

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DRIVER ASSISTANCE SYSTEMS
F Optional equipment
Hill Descent Control sets and maintains vehicle speed from 2–14 mph w\
hile descending a steep incline in a forward or reverse gear.
1. Press the Hill Descent Control button on the center of the instrument panel. Vehicle speed must be below 31 mph to enable the system. The Hill Descent Contro\
l symbol will
illuminate on the instrument cluster.
2. Increase or decrease speed by applying the accelerator or brake pedal or\
use the Cruise Control +/– buttons on the steering wheel. The adjusted speed becomes\
the new set speed. The symbol flashes when the system is actively applying the brakes to maintain vehicle speed.
See Driving and Operating in your Owner’s Manual.
HILL DESCENT CONTROL
The traction control system limits wheelspin and the StabiliTrak® stability control system assists with directional control of the vehicle in difficult driving conditions. Both systems turn on auto-matically every time the vehicle is started.
Turn off traction control if the vehicle is stuck and rocking the vehicl\
e is required.
Press the Traction Control/StabiliTrak Off button on the center of the instrument panel to turn traction control off or back on. The Traction Control Off light will illuminate on the instrument cluster when the system is off.
See Driving and Operating in your Owner’s Manual.
TRACTION CONTROL AND STABILITRAK SYSTEMS
DIESEL EXHAUST BRAKE (DIESEL MODELS ONLY)
The engine exhaust brake enhances the vehicle brake system by automatica\
lly downshifting the transmission, depending on the length of time the brakes are applied.
Press the Diesel Exhaust Brake button on the center of the instrument panel to turn the system on or off.
See your Duramax Diesel Owner’s Manual.
Front and/or Rear Parking Assist
During low-speed parking maneuvers, the system provides “distance to \
closest object”
information on the Driver Information Center and the Safety Alert Seat p\
ulses or a beep sounds (if selected). When an object is very close, the Safety Alert Seat pul\
ses 5 times or beeps sound (if selected).
To turn the system on or off, press the Parking Assist button on the center of the instrument panel.See Driving and Operating in your Owner’s Manual.