19
Sunroof Controls
The sunroof controls are located on the over-head console.
SLIDETILT Express Open/
SLIDE TILT
Close
Fully press the rear of the SLIDE switch to express open the sunroof. Gently press and hold the switch to partially open the sunroof.
Fully press the front of the SLIDE switch to express close the sunroof. Gently press and hold the switch to partially close the sunroof.
SLIDETILTVent/
SLIDE TILT
Close
Press the rear of the TILT switch to vent the sunroof from the closed position.
Press the front of the TILT switch to close the sunroof.
Sunshade
Open and close the sunshade manually by pulling it rearward or forward.
See Keys, Doors and Windows in your Owner’s Manual.
POWER REAR WINDOWF
SUNROOFF
The power rear window switch is located on the overhead console.
Press the switch to open the rear window.
Pull the switch to close the rear
window.
Note: The power rear window cannot be operated manually.
See Keys, Doors and Windows in your Owner’s Manual.F Optional equipment
TIRE PRESSURE MONITOR (SINGLE REAR WHEEL MODELS ONLY)
The Low Tire Pressure warning light on the instrument cluster illuminates wh\
en one or more of the vehicle’s tires is significantly underinflated. Fill the t\
ires 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 infl\
ating a tire to the recom-mended tire pressure.
Refer to your Owner’s Manual for information about normal monthly tir\
e maintenance.
See Vehicle Care in your Owner’s Manual.
20
The myGMC mobile app connects owners with a compatible mobile device to \
a variety of vehicle information and services, such as a searchable Owner’s Man\
ual, real-time fuel information, OnStar Vehicle Diagnostic information and Roadside Ass\
istance.
The myGMC mobile app also enables users to send remote commands — inc\
luding remotely starting the vehicle and locking/unlocking the doors — as we\
ll as to locate the vehicle on a map and send destinations to the navigation system (ve\
hicles must be properly equipped).
Download the mobile app from your compatible mobile device’s app stor\
e.
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 Roa\
dside 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 adv\
isors 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 you\
r vehicle to the nearest GMC dealer for any repairs.
Roadside Assistance and OnStar®
If you require roadside service and have a current OnStar service plan, \
press the OnStar button and the vehicle will send your current GPS location to an OnStar Advisor\
who will speak to you, assess your problem, contact Roadside Assistance and relay your exact lo\
cation so you will get the help you need.
To learn more about OnStar services, press 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 personalized
information, including an online Owner’s Manual and helpful how-to vi\
deos, track your service
history and warranty status, review your current OnStar Vehicle Diagnost\
ics report (active OnStar account required) and more. Create an account today at my.gmc.com.
MYGMC MOBILE APP
!84016528=A!84016528 A
Certain restrictions, precautions and safety procedures apply to your ve\
hicle. 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 2017 Gene\
ral Motors. All rights reserved.
We recommend always using ACDelco or genuine GM service parts.
![GMC SIERRA 2018 Get To Know Guide 20
The myGMC mobile app connects owners with a compatible mobile device to \
a variety of vehicle information and services, such as a searchable Owner’s Man\
ual, real-time fuel information, OnStar](/manual-img/44/35453/w960_35453-19.png "GMC SIERRA 2018 Get To Know Guide 20
The myGMC mobile app connects owners with a compatible mobile device to \
a variety of vehicle information and services, such as a searchable Owner’s Man\
ual, real-time fuel information, OnStar")