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:

    Eight-Way Power Driver Seat
    To adjust a power seat, if equipped: ○ Move the seat forward or rearward by sliding the control forward or rearward. ○ Raise or lower the front or rear part of the seat cushion by movi ...

    Lumbar Adjustment
    Manual Lumbar If equipped, increase or decrease manual lumbar support by turning the knob forward or rearward. See Lumbar Adjustment on page 3‑4 for more information. Power Lumbar To ...

    CD-R or CD-RW Supported File and Folder Structure
    The radio supports: • Up to 50 folders. • Up to eight folders in depth. • Up to 15 playlists. • Up to 512 files and folders. • Playlists with an .m3u or .wpl extension. • Files with ...