Safety
GM is aggressive in promoting the benefits of OnStar 8.0. New-truck buyers get a one-year subscription to the Safe and Sound Plan, after which owners can subscribe annually. If an airbag deploys, OnStar contacts an adviser and can report crash data to emergency services. The Sierra offers roof-mounted side curtain airbags as standard equipment on all trim levels. Seat-mounted side-impact airbags are also standard. An electronic stability system is now standard on all Sierra models.
Available ultrasonic rear parking assist
Traction control
Four-wheel antilock brakes
Seat belt pretensioners activate in rear-end impacts
See also:
What to Add
Use only new DOT 3 brake fluid from a sealed container. See Recommended Fluids
and Lubricants on page 11‑12.
Always clean the brake fluid reservoir cap and the area around the cap before
re ...
Finding a Station
BAND: Press to switch between AM, FM, or XM™, if equipped.
(Tune): Turn to manually select radio stations.
SEEK: Press to seek the previous radio station. Press and hold for a few seconds until ...
Power Mirrors
To adjust the mirrors:
1. Move the selector switch to L (left) or R (right) to choose the driver or
passenger mirror.
2. Press the arrows on the control pad to move each mirror in the desired di ...