When you’re signed in to a trailer profile, the myGMC mobile app can help you keep tabs on the health of your trailer tires by viewing the current pressure and temperature status (up to six trailer tires, excluding spare tires; vehicle must be ON or in ACCESSORY mode).
To monitor trailer tire health, you must install wireless GM-specific sensors within each trailer tire at a third-party trailer or tire service centre.
After installation, you must complete a learning process within the in-vehicle Trailering System while the trailer is connected by following the on-screen prompts.