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 Advanced Diagnostics
  • Check battery life on electric vehicles
  • Start your vehicle9
  • Send directions to your vehicle13
  • Locate your vehicle17
DOWNLOAD THE APP

Diagnostics Reports5

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 diagnostics report to the dealer when it’s time, and the dealer will contact you to set up a service appointment.

Proactive and Diagnostic Alerts

Take the guesswork out of day-to-day vehicle maintenance with Proactive and Diagnostic Alerts. Proactive Alerts advise of any upcoming service needs, while Diagnostic Alerts inform you of any immediate vehicle issues. You can also enroll to receive notifications any time an alert occurs.

Proactive & Diagnostic Alert notifications are available for most vehicles 2015 and newer. Check your vehicle capability here »