OnStar Services
See also:
Sunroof
If your vehicle has a power
sunroof, the switches are
located on the headliner.
To express-open the sunroof press the rear of the driver’s
side switch to the second detent position, and rel ...
QuietTuned for silent ride, comfort
Like all other Buick models, Terraza benefits from QuietTuning, a
comprehensive engineering program throughout the entire vehicle to ensure a
silent ride. This includes new engine isolation measur ...
Add-On Electrical Equipment
Notice:
Do not add anything
electrical to the vehicle unless
you check with your dealer first.
Some electrical equipment can
damage the vehicle and the
damage would not be covered by
the v ...