Your GM Account is different from your Google Account. Each account enables different functionalities within the vehicle.
Your GM Account is the same account you use to access your other vehicle services, such as myChevrolet or myGMC mobile app and owner resources. For this account, you will use the same email address you provided to your dealer when you purchased your vehicle. Signing in with this account ensures your personalized settings, such as your favorite radio stations and your paired phone, are remembered in the vehicle. This way, you won’t have to set the infotainment system up each time you drive.
Your Google Account allows you to bring additional personalization into the vehicle that is tied to some of the other Google apps and services you may use. For example, your saved home and work addresses will appear in Google Maps in the vehicle. You can also access your Google Calendar in the vehicle using Google Assistant. You must be signed into your Google Account to download apps on Google Play in the vehicle. After you sign in, the profile name in the vehicle will match your Google Account
Note: Using a Google Account is optional and at the discretion of the user. When signing in with your Google Account, you will be asked to review the Google Terms and Privacy Statement and accept them to continue.