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HOW TO USE TTY FOR ONSTAR

Difficulty Level: Novice  |  Time Required: 10 Minutes |  Tools Required: None  |  Related Parts, Products, Services or Technology: None

A TTY (Text Telephone) is a special device that lets drivers with hearing or speech impairments communicate using text instead of talking and listening. OnStar®† provides access to certain services via TTY, allowing you to communicate with Advisors or access emergency services through text. Depending on your service plan and how your vehicle is equipped, you can use TTY for OnStar Advisor calls and when utilizing emergency services. You’ll have 24/7 connectivity to a dedicated TTY Advisor


HOW TO USE TTY FOR ONSTAR

OnStar offers several ways to get OnStar TTY service via text, depending on the infotainment system in your vehicle:

  • TTY is embedded in select GM infotainment systems and can be turned on in the system’s SETTINGS app
  • For other infotainment systems, OnStar will provide a special TTY device to deliver services (See “Getting Started: TTY Device” below)
  • Regardless of your infotainment system, you can use the OnStar Guardian™ app on your mobile phone to access certain emergency services via TTY (requires eligible service plan)

GETTING STARTED: EMBEDDED TTY

If TTY is embedded in your infotainment system, it has to be enabled in order for you to begin using it. From that point on, the TTY text will be shown on your infotainment system during Advisor calls. On most vehicles, here’s how you can enable TTY (see below for special instructions for vehicles equipped with Google built-in compatibility):

  1. Turn your vehicle ON and keep it in PARK.
  2. On the infotainment system Home screen, tap the SETTINGS icon.
  3. Select “Apps.”
  4. Scroll down and select “Phone.”
  5. Scroll down and select “TTY.”
  6. Finally, select “Enable OnStar TTY mode.”

If your vehicle is equipped with Google built-in compatibility, follow these steps to enable TTY services:

  1. Turn your vehicle ON and keep it in PARK.
  2. On the infotainment system Home screen, tap the SETTINGS icon.
  3. Select “System.”
  4. Select “TTY Mode.”

GETTING STARTED: TTY DEVICE

For infotainment systems that do not support embedded TTY, eligible Members can request TTY equipment through their GM dealer by calling 1.877.248.2080 or by visiting gmfleet.com. With a doctor’s note saying the equipment is medically necessary, there is no charge for the TTY device. This device is manufactured by an independent manufacturer. It will be shipped directly to your home by OnStar.

To begin using it:

  1. Turn your vehicle ON. With your provided TTY device in the vehicle with you, power the device ON.
  2. The device is designed to automatically pair with the vehicle via Bluetooth®†. If it doesn’t, refer to the instructions provided from the manufacturer.
  3. Keep the device in the vehicle, on its charger, at all times, so it is always ready for use.

The device will be set up for your specific vehicle only and will not work in any other.

MAKING CALLS WITH TTY

Once you’ve enabled TTY on your infotainment system or paired your dedicated TTY device, you can begin communicating with OnStar Advisors.

Here's how it works:
 
  1. Your vehicle should be in PARK to place a TTY call.
  2. To contact an OnStar Advisor, press the blue OnStar button in your vehicle. Your call will be transmitted to a specially trained TTY Advisor.
  3. Use the keypad on either your infotainment screen or on your TTY device to type in your message, then tap “end.” Lines of text on the screen allow you to read the conversation.
  4. You can tap "Hearing Mode" to change to a voice conversation.
  5. When your call is complete, tap “End Call.”

For safety reasons, some services are not available when the vehicle is moving.

USING TTY IN AN EMERGENCY

If you have an eligible service plan, you can utilize TTY services in an emergency situation.

In the event of an emergency, press the red OnStar button to reach a dedicated TTY Advisor. The Advisor will be able to locate your vehicle and find out what type of assistance you need (either by voice or by TTY text). Or, if you're in a crash, your vehicle's built-in sensors can automatically alert an Advisor. Even if you can't answer, the Advisor can contact nearby emergency service providers who can dispatch appropriate medical responders.



Q&As

How can I contact OnStar TTY?

You may call the OnStar toll-free TTY number at 1.877.248.2080 or email .


What do I do if I’m having problems with my OnStar TTY?

If TTY is embedded in your infotainment system, you should contact your GM dealer.

If you have a TTY device, it is manufactured by an independent manufacturer and is covered by the manufacturer’s warranty, not the GM New Vehicle Limited Warranty. Follow the instructions included in the TTY device manufacturer’s manual for reporting difficulties.

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To find out if your vehicle has this feature, contact your dealer or refer to your vehicle’s equipment list. Please check your Owner’s Manual for more information about features. 

  • Visit onstar.com for service limitations and details. Services vary by model. Service plan required.

  • Functionality varies by model. Full functionality requires compatible Bluetooth® and smartphone, and USB connectivity for some devices.

  • U.S. and Canada only. Available on select Apple and Android devices. Mobile Crash Response services are intended for use in select vehicles only and can connect automatically on Android devices only. Service coverage varies with conditions and location. Service availability, features and functionality vary by device and software version. OnStar Guardian service plan (stand-alone plan, add-on plan or plan that includes the service), cell reception, GPS signal and device data connection required. Terms apply. Device permissions are required for app to operate properly. OnStar links to emergency services. Device and app may not transmit all crash data. Check here for details and limitations. Pricing and availability subject to change. You may cancel at any time by calling 1.888.4ONSTAR (1.888.466.7827).

     

  • Google built-in services are subject to limitations and availability may vary by vehicle, infotainment system and location. Select service plan required. Certain Google actions and functionality may require account linking. User terms and privacy statements apply. Google, Google Play, and Google Maps are trademarks of Google LLC.

  • Go to https://www.gmc.com/support/vehicle/smartphone-connections/bluetooth-wifi to find out which phones are compatible with the vehicle. Full Bluetooth feature functionality varies by device, model, and software version.

  • 7,700-lb rating requires a properly equipped 2WD Canyon Elevation Crew Cab short bed model with available Duramax 2.8L I4 Diesel engine and Trailering Package. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. See your GMC dealer for details. Click here to see all GMC destination freight charges.

  • Requires 4WD Crew Cab Short Bed with available 6.2L V8 engine and Max Trailering Package. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Requires Sierra 3500 HD Regular Cab Long Bed 2WD DRW with available Duramax 6.6L Turbo-Diesel V8, Max Trailering Package and gooseneck hitch. Before you buy a vehicle or use it for trailering, carefully review the Trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Requires 4WD Double Cab with available 6.2L V8 and Max Trailering Package. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • SLE models only.

  • Requires properly equipped 3500 Regular Cab DRW Long Box 2WD model with available 6.6L Duramax Turbo Diesel engine and gooseneck hitch. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • 7,550-lb rating requires a properly equipped 4WD Canyon Denali model with available Duramax 2.8L I4 Diesel engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options oraccessories may reduce the amount you can tow.

  • Requires 2WD Denali Short Box model with 5.3L V-8 engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • The 30,990 lbs. rating requires properly equipped Sierra 3500HD Crew Cab Long Box 4WD DRW with available Duramax 6.6L Turbo-Diesel V8 engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • 7,550-lb rating requires a properly equipped Canyon AT4 Crew Cab short bed model with cloth seating, available Duramax 2.8L I4 Diesel engine and Trailering Package. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Sierra’s 9,200-lb rating requires a properly equipped AT4 Crew Cab Short Bed 4WD model with 5.3L V8 engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Requires properly equipped 3500 Crew Cab SRW Standard Box 4WD model with 6.6L gas V8 engine. These maximum payload ratings are intended for comparison purposes only. Before you buy a vehicle or use it to haul people or cargo, carefully review the vehicle loading section of the Owner’s Manual and check the carrying capacity of your specific vehicle on the label on the inside of the driver’s door jamb.

  • Savana Passenger's 9,600-lb rating requires 2500 or 3500 Regular Wheelbase model, trailering equipment package and 6.6L V8 engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Savana Cargo’s 10,000-lb rating requires 2500 or 3500 Regular Wheelbase, trailering equipment package and 6.6L V8 engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Savana Cutaway’s 8,920-lb rating requires a 4500 Series 159" Wheelbase model with available 6.6L V8 engine. These maximum payload ratings are intended for comparison purposes only. Before you buy a vehicle or use it to haul people or cargo, carefully review the vehicle loading section of the Owner’s Manual and check the carrying capacity of your specific vehicle on the label on the inside of the driver’s door jamb.

  • Gross Combination Weight Rating (GCWR). When properly equipped; includes weight of vehicle and trailer combination, including the weight of driver, passengers, fuel, optional equipment and cargo in the vehicle and trailer.

  • Maximum Gross Vehicle Weight Rating (GVWR). When properly equipped; includes weight of vehicle, passengers, cargo and equipment.

  • Canyon’s 7000-lb rating requires available trailering package and 3.6L V-6 engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Sierra's 12,500-lb rating requires Sierra Double Cab or Crew Cab Short box 2wd with 6.2L EcoTec3 V8 engine and NHT Max Trailering Package. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Trailer weight ratings are calculated assuming properly equipped vehicle, plus driver and one passenger. The weight of other optional equipment, passengers and cargo will reduce the trailer weight your vehicle can tow. See dealer for details.

  • Trailer weight ratings are calculated assuming properly equipped vehicle, plus driver and one passenger. The weight of other optional equipment, passengers and cargo will reduce the trailer weight your vehicle can tow. See dealer for details.

  • Savana Passenger's 10,000-lb rating requires 2500 Wheel Base with 6.0L V8 engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Savana Cargo's 10,000-lb rating requires 6.0L V8 engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • These maximum payload ratings are intended for comparison purposes only. Before you buy a vehicle or use it to haul people or cargo, carefully review the vehicle loading section of the Owner’s Manual and check the carrying capacity of your specific vehicle on the label on the inside of the driver’s door jamb.

  • Gross Combination Weight Rating (GCWR). When properly equipped, includes weight of vehicle, passengers, cargo and equipment.

  • Canyon’s 7700-lb rating requires 2WD Crew Cab model with available Duramax 2.8L I-4 Diesel engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Starting at price for base Sierra HD. The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. See your GMC dealer for details. Click here to see all GMC destination freight charges.

  • Requires properly equipped 3500 Regular Cab DRW Long Box 2WD model with available 6.6L Duramax Turbo Diesel engine and gooseneck hitch. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. See your GMC dealer for details. Click here to see all GMC destination freight charges. Bed/Roof-Mounted Bicycle Carriers shown. Requires crossbars or Thule Rack Solution. Non-GM warranty. Warranty by Thule®. See dealer for more information.

  • Requires available 3.6L V6 engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • These maximum payload ratings are intended for comparison purposes only. Before you buy a vehicle or use it to haul people or cargo, carefully review the vehicle loading section of the Owner’s Manual and check the carrying capacity of your specific vehicle on the label on the inside of the driver’s door jamb.

  • Requires 2WD Denali Short Box model with 5.3L V-8 engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Requires properly equipped 3500 Crew Cab DRW Long Box 4WD model with available 6.6L Duramax Turbo Diesel engine and fifth wheel or gooseneck hitch. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Requires properly equipped 3500 Crew Cab DRW Long Box 4WD model with available 6.6L Duramax Turbo Diesel engine and fifth wheel or gooseneck hitch. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Savana Cutaway’s 9,006-lb rating requires a 4500 Series 159" Wheelbase model with available 6.0L V8 engine. These maximum payload ratings are intended for comparison purposes only. Before you buy a vehicle or use it to haul people or cargo, carefully review the vehicle loading section of the Owner’s Manual and check the carrying capacity of your specific vehicle on the label on the inside of the driver’s door jamb.

  • Savana Cargo’s 10,000-lb rating requires  the available 6.0L V8 engine and trailering equipment package.  Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual.  The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Savana Passenger's 9,600-lb rating requires a 2500 or 3500 Regular wheelbase model with available 6.0L V8 engine and trailering equipment package. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

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