2020 GMC SIERRA Get To Know Guide

17F Optional equipment
DRIVER ASSISTANCE SYSTEMSF
FRONT PEDESTRIAN BRAKING (LD Model) – During daytime driving, the system can detect pedestrians directly ahead up to a distance of approximately 131 ft. and displays an amber indicator. When approaching a detected pedestrian too quickly, a red alert flashes on the windshield and the Safety Alert Seat pulses or rapid beeps sound (if selected). The
system may enhance driver braking or automatically brake the vehicle, if you have not already done so.
To set to Alert and Brake, Alert, or Off, go to Settings > Vehicle > Collision/Detection Systems > Front Pedestrian Detection.
LANE KEEP ASSIST WITH LANE DEPARTURE WARNING (LD Model) – The system may help you avoid collisions due to unintentional lane departures. The Lane Keep Assist indicator is green if the system is available to assist. If the vehicle approaches a detect-ed 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 direction as the lane marking is crossed. The Lane Keep Assist system does not continuously steer the vehicle; the driver needs to steer and be in complete control of the vehicle.
To turn on or off, press the Lane Keep Assist button on the center of the instrument panel.
LANE DEPARTURE WARNING (HD Model) – When crossing a detected lane marking without using a turn signal in that 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.
To turn on or off, press the Lane Departure Warning button on the center of the instrument panel.
FRONT AND REAR PARK ASSIST – During low-speed parking maneuvers, the system provides “distance to closest object” infor-mation on the Driver Information Center and the Safety Alert Seat pulses or a beep sounds (if selected). When an object is very close, the Safety Alert Seat pulses or 5 beeps sound (if selected).
REAR CROSS TRAFFIC ALERT – When the vehicle is in Reverse, the system warns of cross-traffic approaching in either direction by displaying a red triangle with directional arrow alert on the infotainment screen and pulsing the left or right side of the Safety Alert Seat or sounding beeps (if selected).
To turn only Rear Cross Traffic Alert on or off, go to Settings > Vehicle > Collision/Detection Systems > Rear Cross Traffic Alert.
To turn Front and Rear Park Assist and Rear Cross Traffic Alert on or off, press the Park Assist button on the center of the instrument panel.
See Driving and Operating in your Owner’s Manual.

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REAR VISION CAMERA/SURROUND VISIONF
REAR VISION CAMERA
When the vehicle is in Reverse below 8 mph, a view of the area behind the vehicle dis-plays on the infotainment screen. Camera view buttonsF are at the bottom of the screen.
Touch the Guidance Lines or Hitch Guid ance button to change the guidelines.
Touch the Hitch View button for a zoomed-in view of the hitch area.
SURROUND VISION
Rear, front or side high-definition
camera views along with a view of the area surround-ing the vehicle are displayed on the infotain-ment screen when the vehicle is in Reverse or Drive below 8 mph. Camera view
buttons are at the bottom of the screen.
Touch the Guidance Lines or Hitch Guidance button to change the guidelines.
Touch the Hitch View button for a zoomed-in view of the hitch area.
Touch the Bed View button to view the cargo bed and the area behind the vehicle.
To check the available camera views when in Drive above 8 mph, touch the Camera icon on the
infotainment screen and select the desired view. Touch X to exit the view.
TRAILER CAMERA PROVISIONSF
Multiple views to aid in trailering are shown on the infotainment screen using the vehicle cameras and up to two additional accessory cameras mounted on the rear or interior of the trailer.
Touch the Camera icon on the infotain-ment screen or shift to Reverse to select a camera view using the camera view buttons at the bottom of the screen.
See Driving and Operating in your Owner’s Manual.
Surround Vision Transparent Trailer View screen
Rear Vision Camera Hitch Guidance screen
Surround Vision Rear Camera View screen
F Optional equipment

19
CRUISE CONTROLF
SETTING CRUISE CONTROL
Press the On/Off button. The Cruise Control symbol will illuminate in white on the instrument cluster.
When traveling at the desired speed, rotate the thumbwheel down to set the speed. The symbol will illuminate in green on the instrument cluster.
ADJUSTING CRUISE CONTROL
+RES Resume/Accelerate
Rotate the thumbwheel up to resume a set speed. When active, rotate the thumbwheel up to increase speed 1 mph; rotate and hold to continue increasing speed.
–SET Set/Coast
When active, rotate the thumbwheel down to decrease speed 1 mph; rotate and hold to continue decreasing speed.
Cancel
Press the button, or press the brake pedal, to cancel Cruise Control without erasing the set speed from memory.
The set speed is erased when Cruise Control or the vehicle ignition is turned off.
ADAPTIVE CRUISE CONTROL–ADVANCEDF (LD MODEL)
The system enhances regular Cruise Control to maintain a following gap — the time between your vehicle and a vehicle detected directly ahead — by accelerating or brak-ing automatically while you continue to steer.
Press the Following Gap button to select a following gap setting of Far, Medium, or Near. This is also the Forward Collision AlertF setting.
Press and hold the Cancel button to switch between regular Cruise Control and Adaptive Cruise Control-Advanced.
See Driving and Operating in your Owner’s Manual.
REAR CAMERA MIRRORF
The rear camera mirror provides a wider, less obstructed field of view to assist when driving, changing lanes and checking traffic conditions.
A. On/Off
Pull or push the lever at the bottom of the mirror to turn the video display on or off.
B. Selection Control
Press and release the button to select the brightness, zoom, or tilt feature.
C. + / –
Press and release either button to adjust the selected view.
See Keys, Doors and Windows in your Owner’s Manual.
ABC
F Optional equipment

20F Optional equipment
HILL DESCENT CONTROLF
PARK GRADE HOLD ASSIST
Hill Descent Control sets and maintains vehicle speed from 1–14 mph while 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 Control 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.
Park Grade Hold Assist enhances hill hold by using braking effort at all four wheels to help keep the truck in place for an extended length of time.
See Driving and Operating in your Owner’s Manual.
Use the four-wheel drive buttons on the left side of the instrument panel to shift into and out of four-wheel drive. The Driver Information Center displays the current status of the transfer case.
AUTO Auto Four-Wheel Drive High – Use when traction conditions vary. Shift into this mode at any speed except when shifting from
4
4
2
.
44
2
Two-Wheel Drive High – Use for most streets and highways. Shift into this mode at any speed except when shifting from
44
2
.
4
4
2
Four-Wheel Drive High – Use when extra traction is needed or in most off-road driving. Shift into this mode at any speed except when shifting from
44
2
.
44
2
Four-Wheel Drive LowF – Use when driving off-road in deep sand, mud or snow, or on steep hills. Shift into or out of this mode when the vehicle is stopped or moving less than 3 mph with the transmission in Neutral. Shift the transmission into gear when the indicator light stops flashing.
N NeutralF – Use to dolly or dinghy tow the vehicle behind an RV. Neutral is not avail-able with the single speed transfer case. Refer to your Owner’s Manual for the shift procedure.
See Driving and Operating in your Owner’s Manual.
FOUR-WHEEL DRIVEF

21F Optional equipment
The Drive Modes automatically adjust various vehicle control systems based on driving preferences, weather and road conditions. The modes are displayed on the Driver Information Center.
Rotate the Drive Mode knob to the right to select a mode. Modes may include:
Normal – Use for normal driving.
Sport – Use for enhanced respon-siveness on paved roads.
Snow (2WD only) – Use for enhanced traction during slippery conditions.
Off-Road (4WD only) – Use for enhanced control on unpaved roads or trails at moderate speeds.
Tow/Haul – Rotate the knob to the left; use to reduce shift cycling when towing or hauling heavy loads in stop-and-go traffic, rolling hills, or busy parking lots.
Terrain (4WD only) – Press the button for enhanced control in low-speed off-road conditions. The system automatically brakes the vehicle when travers-ing various terrain or obstacles. Only available with single-speed transfer cases (LD Model) when in4
4
2
. Refer to Driver Mode Control in your Owner’s Manual.
See Driving and Operating in your Owner’s Manual.
DRIVE MODESF
LD Model shown
TIRE PRESSURE MONITOR
The Low Tire Pressure warning light on the instrument cluster illuminates when one or more of the vehicle’s tires is significantly underinflated. Fill the tires to the proper tire pressures listed on the Tire and Loading Information label, located below the driver’s door latch. Current tire pressures can be viewed on the Driver Information Center.
With the ignition On or in Accessory mode, the Tire Fill Alert will provide visual and
audible alerts when the Low Tire Pressure warning light is on to help with inflating a tire to the recommended tire pressure (does not apply to spare tire). When the recom-mended pressure is reached, the horn sounds and the turn signals change from flashing to solid.
See Vehicle Care in your Owner’s Manual.

22F Optional equipment
TRAILERINGF
TRAILERING APP
The in-vehicle Trailering app on the info-tainment screen includes:
• Hitching and setup with pre-departure checklists
• Maintenance reminders
• Trailer tire pressure monitoringF
• Trailer light testing
• Customizing and saving trailer profiles
• Trailer Gain settings saved for each trailer profile
• Trailer theft detection (requires an active OnStar service plan)
Trailering App information also is available with the myGMC mobile app.
HITCH AREA LIGHTING
Press the Cargo Lamp button on the left side of the instrument panel to turn the hitch lamp on/off.
TRAILERING INFORMATION LABEL
The Trailering information label, located by the driver’s door latch, provides vehicle-specific weight information to help when loading the vehicle.
See Driving and Operating in your Owner’s Manual.
INTEGRATED TRAILER BRAKE CONTROL (ITBC)F
The ITBC system can be used to adjust the amount of power output, or Trailer Gain, available to the trailer brakes. The control panel is located on the center of the instru-ment panel. ITBC information is displayed on the Driver Information Center.
Squeeze the control together (right side does not move) to manually apply the trailer brakes.
Adjust the Trailer Gain by pressing the +/– adjustment buttons on the control panel.
The trailer app will remember your Trailer Gain adjustments for each trailer profile.
See Driving and Operating in your Owner’s Manual.

23
The tailgate has 6 functional positions to improve loading, unloading and access to the cargo box.
1. Primary Gate
Open the primary gate for access to the cargo box.
2. Primary Gate Load Stop
With the primary gate open, the load stop helps keep longer items secure in the cargo box.
3. Easy Access
The inner gate folds down for easier reach into the cargo box to access items near the cab.
4. Full-width Step
With the primary gate open, the inner gate folds into a sturdy step (up to 375 lbs.) with a conve-nient handle for easy cargo box entry and exit.
5. Inner Gate Load Stop
With the primary gate closed, fold the inner gate for two-tier storage and open the load stop to help keep longer items secure.
6. Inner Gate Work Surface
With the primary gate closed, fold the inner gate for two-tier storage or for use as a standing-height work surface.
Note: Do not lower the inner gate with the primary gate open if a hitch ball or trailer is attached.
OPEN THE INNER GATE
Press the upper button (A) on the tailgate.
OPEN THE PRIMARY GATE
Press the lower button (B) on the tailgate.
Press the Power Tailgate button twice on the Remote Keyless Entry transmitter.
Press the Power Tailgate button on the
center of the instrument panel.
OPEN THE PRIMARY GATE AND INNER GATE
Press the lower button and then upper button (B then A) on the tail-gate consecutively.
OPEN THE LOAD STOP OR STEP
Press the release bar (C).
GMC MULTIPRO TAILGATE OPERATIONF
F Optional equipmentSee Keys, Doors and Windows in your Owner’s Manual.
A
B
C
1
2
3
4
5
6

24
Download the myGMC app to your compatible smartphone (or device) and, if your
vehicle is properly equipped, you can start or turn off your engine, lock or unlock your doors, view key diagnostic information, set parking information and more.
The app is available on select Apple and Android devices. Service availability,
features and functionality vary by vehicle, device and data plan. Device data connection required. Visit onstar.com for more details. Download the mobile app from your
compatible mobile device’s app store.
ROADSIDE ASSISTANCE
1-888-881-3302 TTY Users: 1-888-889-2438
As the owner of a new GMC, you are automatically enrolled in the GMC Roadside Assistance program for up to 5 years/60,000 miles, whichever occurs first, at no expense to you. GMC’s Roadside Assistance toll-free number is staffed by a team of trained advisors who are available 24 hours a day, 365 days a year, to contact a service provider for light services (fuel delivery, jump-starts, flat tire and lock-outs) or make arrangements to tow your vehicle to the nearest GMC dealer for any repairs.
OnStar® Roadside Assistance
If you have a current OnStar Safety & Security plan, push the blue OnStar button or red Emergency button to get the help you need. An OnStar advisor will use GPS technology to pinpoint your vehicle location and contact the nearest service provider.
To learn more about OnStar services, push the blue OnStar button, visit onstar.com, call 1-888-4-ONSTAR (1-888-466-7827), or refer to your Owner’s Manual.
GMC OWNER CENTER
Get to know your vehicle inside and out with the GMC Owner Center. Check out person-alized information, including an online Owner’s Manual and helpful how-to videos, track your service history and warranty status, manage your OnStar and Connected Services vehicle plans, review your current Vehicle Diagnostics report (active service required) and more. Create an account today at my.gmc.com.
MYGMC MOBILE APP
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We recommend always using ACDelco or genuine GM service parts.
Certain restrictions, precautions and safety procedures apply to your vehicle. Please read your Owner’s Manual for complete instructions. All information contained in this guide is based on the latest information available at the time of printing and is subject to change without notice. Copyright 2019 General Motors. All rights reserved.