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  • Exterior image of the 2018 GMC Sierra 3500 Denali HD premium heavy-duty truck.
    The Sierra HD family lineup
  • Exterior image of the 2018 GMC Sierra 3500 Denali HD premium heavy-duty truck.
    Standard trailer-sway-control technology helps you trailer with confidence
  • Exterior image of the 2018 GMC Sierra 3500 Denali HD premium heavy-duty truck.
    Standard spray-on bedliner to protect your truck and your cargo
  • Exterior image of the 2018 GMC Sierra 3500 Denali HD premium heavy-duty truck.
    Four upper tie-downs make it easier to secure cargo
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The Sierra HD family lineup