See also:

Additives
To provide cleaner air, all gasolines in the United States are now required to contain additives that help prevent engine and fuel system deposits from forming, allowing the emission control sys ...

Cellular and GPS Antennas
Avoid placing items over or near the antenna to prevent blocking cellular and GPS signal reception. Cellular reception is required for OnStar to send remote signals to the vehicle. ...

Reducing Speed While Using Cruise Control
To reduce your speed while using cruise control: • Press and hold the SET– button on the steering wheel until the desired lower speed is reached, then release it. • To slow down in very sm ...