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:

    Tire Size
    The following is an example of a typical passenger vehicle tire size. (A) Passenger (P&-Metric) Tire: The United States version of a metric tire sizing system. The letter P as the first chara ...

    Steering Wheel Adjustment
    Steering Wheel Adjustment The tilt lever is located on the lower left side of the steering column. To adjust the steering wheel: 1. Hold the steering wheel and pull the lever. 2. Move the stee ...

    Vehicle Messages
    Messages displayed on the DIC indicate the status of the vehicle or some action may be needed to correct a condition. Multiple messages may appear one after another. The messages that do not require ...