OnStar Services
See also:
Customer Assistance Offices
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 Assis ...
Gasoline Octane
Use regular unleaded gasoline with a posted
octane rating of 87 or higher. If the octane rating
is less than 87, you may notice an audible
knocking noise when you drive, commonly referred
to as sp ...
Time and Date Settings
From the Time & Date Settings
screen button, press to display the
Time & Date Settings menu.
Set Time: Press the up or down
arrows to increase or decrease the
Hours and Minutes displa ...
