maintenance GMC SIERRA 2014 Get To Know Guide

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Range Selection Mode
Range Selection Mode allows the driver to select the range of gears desired for the current driving conditions.
1. Move the shift lever to the Manual (M) position.
2. Press the + (plus) or – (minus) button on the shift lever to select a lower or higher gear. An M and the current gear will be displayed on the Driver Information Center.
The transmission will be limited to the gear selected and lower gears. If vehicle speed is too high or too low for the requested gear, the shift will not occur.
Tow/Haul Mode
The Tow/Haul Mode adjusts the transmission shifts to reduce shift cycling, such as when towing or hauling heavy loads or driving on steep grades. When towing, u\
se the Tow/Haul Mode to prevent damage to the engine or transmission.
Press the Tow/Haul Mode button on the end of the shift lever to turn the system on or off.
GMC Trailering Guide App
The free trailering guide app includes maximum trailer weight ratings by model along with trailering information on hitches and equipment, GMC trailering technologies, safe trailering techniques and more. Currently available for the iPad®, download the mobile app from the iPad’s app store.
See Driving and Operating in your Owner Manual.
Automatic Transmission
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. The proper tire pressures for the vehicle are listed on the T\
ire and Loading Information label, located below the driver’s door latch. Current tir\
e pressures can be viewed in the Driver Information Center.
Tire pressure is affected by cold weather and distance driven. If the low tire pressure
warning light illuminates when the vehicle is first started in cooler temperatures and then turns off as the vehicle is driven, check for the proper tire pressures.\
Refer to your Owner Manual for additional information about normal monthly tire maintenance.
See Vehicle Care in your Owner Manual.
Tire Pressure Monitor

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Roadside Assistance
1-800-GMC-8782 TTY Users: 1-888-889-2438(1-800-462-8782)
As the owner of a new GMC, you are automatically enrolled in the GMC Roa\
dside Assistance program for up to 5 years/100,000 miles, whichever comes first, at no expense to you. This value-added service is intended to provide you with peace o\
f mind as you drive across town or travel the open road.
GMC’s Roadside Assistance toll-free number is staffed by a team of tr\
ained advisors who are available 24 hours a day, 365 days a year, to contact a service prov\
ider 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.
Roadside Assistance and OnStar®
If you require roadside service and have a current OnStar subscription, \
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
location so you will get the help you need.
GMC Owner Center
The GMC Owner Center, a complimentary service for GMC owners, is a one-s\
top resource designed to enhance your GMC ownership experience. Exclusive member benefits include online service reminders, vehicle maintenance tips, online Owner Manual,\
special privileges and more. Sign up today at my.gmc.com.
Certain restrictions, precautions and safety procedures apply to your ve\
hicle. Please read your Owner Manual for complete instructions. All information contained herein is based on the latest information available at the time of printing and is subject to change without notice. Copyright 2013 by Gene\
ral Motors. All rights reserved.
We recommend always using ACDelco or genuine GM service parts.
myGMC and OnStar® Mobile Apps
The myGMC and OnStar RemoteLink mobile apps connect owners to a variety of vehicle information and services, such as a searchable Owner \
Manual, real-time fuel information and Roadside Assistance, as well as enabling users to perform Remote Keyless Entry transmitter commands, including locking and unlocking the doors and starting the vehicle.
An active OnStar account is required to use the OnStar mobile app. Downl\
oad the mobile apps from your iPhone® or Android™ device’s app store. To learn more about OnStar
services, press the OnStar button, refer to your Owner Manual, call 1-88\
8-466-7827 or visit OnStar.com.