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Used GMC Sierra 3500 AT4 for Sale in Fort Collins, CO

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    New 2026 GMC Sierra 3500 Denali w/ Denali Reserve Package
    75,602
    MSRP$85,285
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    Certified 2025 GMC Sierra 3500 AT4 w/ AT4 Premium Plus Package
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    • AT4
    • 9K mi
    80,995
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    Newly Listed
    Used 2024 GMC Sierra 3500 AT4 w/ AT4 Premium Plus Package
    75,979
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    Certified 2025 GMC Sierra 3500 AT4 w/ AT4 Premium Plus Package
    Certified
    • AT4
    • 9K mi
    80,995
    See payment
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    Used 2025 GMC Sierra 3500 AT4 w/ AT4 Premium Plus Package
    68,529
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    Newly Listed
    Used 2021 GMC Sierra 3500 AT4 w/ AT4 Premium Plus Package
    51,998
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    New 2026 GMC Sierra 3500 AT4
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    Used 2021 GMC Sierra 3500 AT4 w/ AT4 Premium Plus Package
    Used
    • AT4
    • 117K mi
    46,999
    See payment
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