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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 ...

Roof Rack System
WARNING If something is carried on top of the vehicle that is longer or wider than the roof rack—like paneling, plywood, or a mattress—the wind can catch it while the vehicle is being driven. ...

Armrest Retaining Strap
WARNING A rear center armrest that is not properly stowed and secured could fall forward during a sudden stop or collision. The armrest could contact an infant secured in a rear&-facing child ...