Onstar.com

The website provides access to account information, manages the OnStar subscription, and allows viewing of videos of each service.

Get subscription plan pricing and sign up for OnStar Vehicle Diagnostics. Click on the “My Account” tab on the home page.

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    Under the Hood
    Like the regular all-wheel-drive Escalade and the Escalade ESV, the Escalade EXT uses a 6.0-liter V-8 that produces 345 horsepower and 380 pounds-feet of torque. The engine teams with a four-speed ...

    Wagon Model
    Pull the lever toward you to spray washer fluid on the windshield. The spray continues until the lever is released. The wipers will run a few times. WASHER FLUID LOW ADD FLUID displays on th ...

    Engine Overheating
    The vehicle has several indicators to warn of engine overheating. There is a coolant temperature gauge on your vehicle's instrument panel. See Engine Coolant Temperature Gauge  . In addit ...