2019 GMC SIERRA Get To Know Guide

17F Optional equipment
HILL DESCENT CONTROLF (X31)
INTEGRATED TRAILER BRAKE CONTROL (ITBC)F
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.
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 left side of the instrument panel. ITBC information is dis-played on the Driver Information Center.
Squeeze the levers together on the
control panel (left lever 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.
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.
The Tire Fill Alert provides visual and audible alerts to help when inflating a tire to the recommended tire pressure (does not apply to spare tire). When the recommended pressure is reached, the horn sounds and the turn signals change from flashing to solid.
Refer to your Owner’s Manual for information about normal monthly tire maintenance.
See Driving and Operating in your Owner’s Manual.

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To apply the parking brake, press the Parking Brake button on the left side of the instrument panel.
To release the parking brake, turn on the ignition, press the brake pedal, and then press the button. See Driving and Operating in your Owner’s Manual.
ELECTRIC PARKING BRAKE
F Optional equipment
TRAILERINGF
TRAILERING APP
The in-vehicle Trailering app on the Home page of the infotainment screen helps with a number of trailering features, including:
• 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.

19
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 OPERATION
F Optional equipmentSee Keys, Doors and Windows in your Owner’s Manual.
A
B
C
1
2
3
4
5
6

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Download the myGMC app to your compatible smartphone (or device) and, if your vehi-cle 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, fea-tures 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 com-patible 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/100,000 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 2018 General Motors. All rights reserved.