OnStar

See also:

Customer Assistance Offices (U.S. and Canada)
Buick encourages customers to call the toll-free number for assistance. However, if a customer wishes to write or e-mail Buick, the letter should be addressed to: United States Buick Customer ...

On the Road
The LaCrosse moves out when pushed, but its capabilities stop short of an all-out sport sedan's — fine by me, seeing as no one ever wanted Buick to build the next BMW. The LaCrosse CXS, which pa ...

Sunroof
The vehicle may be equipped with a power sliding sunroof. To open or close the sunroof, the ignition must be turned to ON, ACCESSORY, or Retained Accessory Power (RAP) must be active. Press and ...