Horn

Pressa to sound the horn. on the steering wheel pad to sound the horn.

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    Overview
    The GMC Sierra All Terrain HD concept is an exploration of heavy-duty truck capability combined with greater off-road versatility. It is highlighted by a bold exterior design, enhanced all-terrain ...

    Cruise Control
    With cruise control, a speed of about 40 km/h (25 mph) or more can be maintained without keeping your foot on the accelerator. Cruise control does not work at speeds below about 40 km/h (25 mph). Whe ...

    Tailgate Removal
    The tailgate can be removed to allow for different loading situations. Assistance may be needed with the removal to avoid damage to the vehicle. On vehicles with a Rear Vision Camera, it must be dis ...