See also:

California Fuel
If the vehicle is certified to meet California Emissions Standards, it is designed to operate on fuels that meet California specifications. See the underhood emission control label. If this fuel ...

Online Owner Center
Online Owner Center (United States only) The Owner Center is a resource for your GM ownership needs. Specific vehicle information can be found in one place. The Online Owner Center allows you to: ...

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 ...