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Used 2021 GMC Sierra 3500 for Sale in Denver, CO

80203
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    Used 2021 GMC Sierra 3500 AT4 w/ AT4 Premium Plus Package
    55,281
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    296View Vehicles

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    Used 2021 GMC Sierra 3500 AT4 w/ AT4 Premium Plus Package
    55,281
    Used 2021 GMC Sierra 3500 Denali w/ Denali Black Diamond Edition
    Used
    • Denali
    • 89K mi
    52,997
    Used 2021 GMC Sierra 3500 Denali w/ Denali Ultimate Package
    Used
    • Denali
    • 178K mi
    32,600
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    Based on 4.5% APR for mos.
    Used 2021 GMC Sierra 3500 AT4 w/ AT4 Premium Plus Package
    55,281
    Used 2021 GMC Sierra 3500 Denali w/ Denali Black Diamond Edition
    Used
    • Denali
    • 125K mi
    54,685
    New 2026 GMC Sierra 3500 AT4 w/ AT4 Premium Plus Package
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    Used 2021 GMC Sierra 3500 4x4 Crew Cab w/ Gooseneck/5TH Wheel Package
    Used
    • 4x4 Crew Cab
    • 75K mi
    43,500
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