Be prepared for what’s ahead.

Protect your vehicle with a suite of diagnostic services—ready to help you diagnose and manage vehicle health and maintenance.

How to Access Diagnostics Services

Press Your Vehicle's Blue Button

  • Request an on-demand Diagnostics check

Use the updated OnStar RemoteLink®3 app for these features and more:

  • View vehicle diagnostics
  • Check battery life on electric vehicles
  • Start your vehicle9
  • Send directions to your vehicle13
  • Locate your vehicle17

Vehicle Diagnostics5

Every month, your vehicle can run
 a thorough check of its engine, transmission, antilock brakes and more, and email you the results. If you want to run a diagnostic check when you’re behind the wheel, just ask an Advisor to run one for you.

Dealer Maintenance Notification

Is it time for an oil change? A 60,000-mile checkup? You’ll always know because your car will email your vehicle diagnostics report to the dealer when it’s time, and the dealer will contact you to set up a service appointment.