Buick LaCrosse: OnStar® - Performance and Maintenance - In Brief - Buick LaCrosse Owners ManualBuick LaCrosse: OnStar®

If equipped, this vehicle has a comprehensive, in-vehicle system that can connect to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic Services. See OnStar Overview for more information.

    Roadside Assistance Program
    U.S.: 1-800-252-1112 TTY Users (U.S.): 1-888-889-2438 Canada: 1-800-268-6800 Mexico: 01-800-466-0818 As the owner of a new Buick, you are automatically enrolled in the Roadside Assistance prog ...

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    Trailer Tongue Weight (TW)
    The tongue weight is the downward force exerted on the hitch ball by the trailer. In most cases it should not be less than or more than 10% of the trailer load. You must consider this as part of ...

    Switching the rear automatic climate control on/off
    1. "Settings" 2. "Climate" 3. "Rear climate control" The rear automatic climate control is not operational if the automatic climate control is switched off or if t ...

    Shift ranges and their functions
    ● You can choose from 6 levels of engine braking force. ● A lower shift range will provide greater engine braking force than a higher shift range, and the engine speed will also increas ...