OnStar Program London

OnStar Program | MacMaster Chevrolet, London ON

OnStar Advisors are on stand-by to assist you and your loved ones 24/7 - in our out of any vehicle.


When the unexpected happens, the last thing you want is to be alone. OnStar has over 20 years of experience delivering in-vehicle services with a human touch. With the OnStar Guardian app, you have safety services that go anywhere.

Get more connectivity and confidence from your Chevrolet®, Buick®, GMC® or Cadillac®. Activate your 1‑month trial* today, and get an elevated vehicle experience at no additional charge. Connectivity is limited to some 2015 model year and newer vehicles that came with 4G LTE hardware or other older vehicles that received a hardware upgrade.

Automatic Crash Response

Using built-in vehicle sensors, Automatic Crash Response can detect when you've been involved in a crash. Specially trained OnStar Advisors will immediately offer you help - even if you don't ask for help, you'll get it anyway.

Emergency Services

The unexpected is never too far away. Whether you're in a crash, having a medical emergency, or need critical assistance, OnStar Advisors are ready to help. Even OnStar's specially trained Emergency Medical Dispatch Advisors* can give certain medical instructions in the event of an emeygency.

Automatic Crash Response

Using built-in vehicle sensors, Automatic Crash Response can detect when you've been involved in a crash. Specially trained OnStar Advisors will immediately offer you help - even if you don't ask for help, you'll get it anyway.

Crisis Assist

When severe weather, a natural disaster or other crisis strikes, OnStar Advisors are right there working with you. Working with first responder partners, OnStar will assist you with information, special routing and a reassuring, human voice.

Stolen Vehicle Assistance

A Theft Alarm Notification* can inform you if your vehicle alarm goes off. Once your vehicle is reported stolen, OnStar Advisors can utilize GPS technology designed to locate your vehicle and alert authorities. OnStar can also remotely prevent a thief from restarting your vehicle.

Turn-by-turn Navigation

You can easily access directions you need simply by pushing your blue OnStar button an asking for an Advisor for directions - it's that easy. OnStar Advisors can download directions straight to your vehicle and call out every turn.

The OnStar Guardian App


With the OnStar Guardian™ app, you and your family can take that trust and experience on your phones anywhere you go. Need a download link? Text "OnStar" to 56000 or click the corresponding button for your device below.