The In-Vehicle Trailering App found on the GMC ProGrade Trailering System is designed to help improve your trailering experience.

Depending on your vehicle’s equipment, available features include an in-vehicle Trailering System, integration with the myGMC mobile app and more.

You’ll need a select OnStar® plan to access trailering features in the myGMC mobile app.

Your trailering system experience will vary, depending on your vehicle type.  


If equipped, you can open your In-Vehicle Trailering App by pressing the TRAILERING icon on your infotainment system.

Depending on your vehicle’s equipment, your In-Vehicle Trailering App may include the following features:

Customizable Trailer Profiles

  • To experience the full feature set of the system, log in to your Personal Profile through the infotainment system and create a custom trailer profile.
  • When your trailer is first connected while the vehicle is ON or in ACCESSORY mode, the system will automatically prompt you to create a profile or select an existing profile. The process for creating a profile can vary by vehicle, so check your Owner’s Manual for more information on creating new trailer profiles.
  • Once a profile is created, information specific to that trailer (trailer type, mileage, etc.) will be stored.
  • Features that require additional setup include:
    • Enabling Tow/Haul Reminder, setting up accessory trailer camera features (if equipped), creating maintenance reminders and more.
    • Camera Setup for Transparent Trailer and other trailering camera features (if equipped).
    • Trailer Tire Pressure and Temperature Monitoring System (if equipped).
    • Maintenance Reminders.
  • You can also import a profile that was created in the myGMC mobile app. To do so, select “Import.”
    • You must have an active select OnStar plan and be signed in to your infotainment system Personal Profile to import a trailer profile.
  • Up to five profiles can be stored in the vehicle.
  • You can create up to 25 trailer profiles in the myGMC mobile app. However, if you already have five profiles stored in your vehicle, you will need to remove one to import a profile from the mobile app (the profile you removed will still be stored in the mobile app).

Trailer Light Test

With this feature, you can simply tap a button on the screen to test lights on your vehicle and trailer. The Trailer Light Test will run through a lighting sequence (e.g., brake lights, turn signals, etc.) automatically once engaged.

The way you access the light test depends on your vehicle.

  • On some vehicles, the light test is accessible using the TRAILER LIGHTS icon on the Home screen (on these vehicles, the test does not include trailer light diagnostics).
  • On other vehicles, in the In-Vehicle Trailering System, select the Connections tile in the Status menu, then select “Start Light Test.” This step may vary, depending on your vehicle type and model year.
    • A diagnostic component will alert you of potential trailer light outages. If an issue is detected, the outage is called out along with a “diagnose” button.
  • This feature (excluding the diagnostic component) is also available through the myGMC mobile app.

Trailer Tire Pressure and Temperature Monitoring System

To use this feature, you must install wireless GM-specific sensors within each trailer tire at a third-party trailer or tire service center.

After installation, you must follow prompts within the in-vehicle system to complete a learning process that lets your vehicle sync with the tire sensors.

  • Once setup is complete, tire pressure and temperature information are relayed to the trailer profile Home screen, allowing you to monitor tire pressure and temperature while driving.
  • A green status indicates the tire pressure/temperature is within the recommended range.
  • An amber status indicates the tire pressure/temperature needs attention.

Pre-Departure Checklists

The in-vehicle system provides a step-by-step guide for connecting a trailer to the vehicle. These steps can be customized and expanded to show clear, illustrated examples of what connections need to be made. The pre-populated checklist will vary, depending on hitch type.

Here’s how it works:

  • You can check off items in the checklist as they are completed.
  • Select the “i” icon next to a checklist item for a detailed description and, if available, a diagram of the procedure.
  • Select “+Checklist Item” to add custom items to the checklist for specific needs (e.g., check the boat’s life preservers before heading out).
  • This feature is also available through the myGMC mobile app.

Trailer Theft Alert

If the trailer’s wiring harness is disconnected while the vehicle is parked and if the vehicle’s alarm is armed, the vehicle’s alarm will be triggered (flashing exterior lights and sounding the horn) to help discourage trailer theft.

To enable this feature:

  • You must turn the feature on in your trailer profile in the In-Vehicle Trailering System.
  • The trailer wiring harness must be connected.
  • The vehicle’s theft-deterrent system must be armed.

If you have an active subscription to the OnStar® Safety & Security Plan and Theft Alarm Notification is enabled, you can also be alerted by phone call, email or text when a theft is detected (based on the method designated in your OnStar Theft Alarm preferences).  

For your security, please don’t include personal info such as phone number, address or credit card details.



What are the benefits of creating an in-vehicle Trailer Profile?

Creating a Trailer Profile, as opposed to using the Guest Trailer profile, allows you to track and store important information about your trailer, including mileage, maintenance reminders, the last used brake gain associated with the custom trailer profile, custom checklists and more. Up to five profiles can be stored in the vehicle. When using the Guest Trailer Profile, any trailer information entered will not be saved after the vehicle is shut off.

How do I access my Trailer Profile in another vehicle?

You can access your Trailer Profile in another similarly equipped vehicle by logging in to your Personal Profile through the infotainment system and then importing the profile via the Trailering System. You must log in to the system using the same credentials you use in the myGMC mobile app in order to sync trailer information.

Why can’t I see my trailer’s tire pressure and temperature information?

This feature requires installation of available wireless GM-specific sensors within the tires by a third-party trailer or tire service center. After the sensors are installed, a learning process must be completed within the trailer profile in the in-vehicle system by following on-screen prompts. Refer to your Owner’s Manual for detailed instructions.

Why didn’t my trailer light sequence start?/Why did my trailer light sequence stop prematurely?

There are several factors that may prevent your trailer light sequence from starting or that would stop it prematurely. These include:

  • The vehicle is not in PARK.
  • The brake is applied.
  • The hazard lights are turned on.
  • The turn signal is activated.

Why aren’t all of the available features presented to me for setup in my Trailer Profile?

The options presented to you are dependent on your trailer type and vehicle equipment (e.g., camera package).

Do I need an active OnStar® plan to use trailering features?

Yes. A select OnStar® plan is required in order to share Trailer Profiles from person to person and to access trailering features through the myGMC mobile app.

The OnStar Safety & Security Plan is required in order to receive a mobile Trailer Theft Alert notification (working electrical system, cell reception, GPS signal and armed GM factory-installed theft deterrent system also required). 

Why isn’t my trailer’s information syncing between the In-Vehicle Trailering System and the myGMC mobile app?

Certain information may take up to 30 minutes to sync. To avoid the delay, you can complete an ignition cycle (i.e., turn the vehicle off, open the door and wait for the infotainment system to turn off) or log out of and then back in to your profile.

Additionally, you need an active OnStar plan in order to access trailering features through the myGMC mobile app, as well as a data connection.

If I share profile ownership with another user, what information can they edit?

If you share ownership of the profile, the other user will have the ability to edit the trailer’s profile. You will continue to receive updates and will also maintain the ability to edit the profile. This does not occur if you share a duplicate of the profile.



Communicate with one of our specialists.

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.