OnStar Services

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Canadian Vehicle Owners
Propriétaires Canadiens A French language copy of this manual can be obtained from your dealer or from: On peut obtenir un exemplaire de ce guide en français auprès du concessio ...

Muting a Call
During a call, all sounds from inside the vehicle can be muted so that the person on the other end of the call cannot hear them. To mute a call, press , and then say “Mute Call.”. To can ...

Responsive performance
Buick LaCrosse's stiff body structure serves as the foundation for precise suspension tuning, safety and a quiet ride. Buyers can choose from a family of efficient, direct-injection six-cylinder e ...