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  • Exterior design of the 2018 GMC Sierra 3500HD Denali.
    THE SIERRA FAMILY LINEUP
  • The 2018 GMC Sierra 3500HD Denali with Standard Trailer-Sway-Control technology.
    STANDARD TRAILER-SWAY-CONTROL TECHNOLOGY HELPS YOU TRAILER WITH CONFIDENCE
  • Available spray-in bed liner helps protect the Sierra 3500HD Denali cargo bed.
    A DURABLE SPRAY-ON BEDLINER PROTECTS YOUR TRUCK BED FROM SCRATCHES AND DENTS
  • The 2018 GMC Sierra 3500HD Denali helps you secure cargo with four upper tie-downs.
    FOUR UPPER TIE-DOWNS MAKE IT EASIER TO SECURE CARGO
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THE SIERRA FAMILY LINEUP