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Used GMC Sierra 2500 for Sale in Fort Collins, CO

80521
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Items 1 to 2 of 11.
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    Used 2023 GMC Sierra 2500 AT4 w/ AT4 Premium Plus Package
    57,655
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    66 Matches

    Certified 2023 GMC Sierra 2500 Denali w/ Denali Ultimate Package
    Certified
    • Denali
    • 31K mi
    62,692
    Certified 2024 GMC Sierra 2500 AT4 w/ AT4 Premium Plus Package
    • AT4
    • 44K mi
    67,698
    Used 2020 GMC Sierra 2500 4x4 Crew Cab w/ Convenience Package
    Used
    • 4x4 Crew Cab
    • 94K mi
    29,697
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    Based on 4.5% APR for mos.
    Used 2026 GMC Sierra 2500 Denali Ultimate
    Used
    • Denali Ultimate
    • 5K mi
    87,999
    Used 2026 GMC Sierra 2500 Denali Ultimate
    • Denali Ultimate
    • 4K mi
    89,463
    New 2026 GMC Sierra 2500 Pro w/ Snow Plow Prep/Camper Package
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    Certified 2023 GMC Sierra 2500 Denali w/ Denali Ultimate Package
    Certified
    • Denali
    • 31K mi
    62,692
    Item 1 of 4.
    41,569
    Used 2015 GMC Sierra 2500 Denali w/ Duramax Plus Package
    Used
    • Denali
    • 89K mi
    39,000
    Used 2026 GMC Sierra 2500 Denali Ultimate w/ Max Trailering Package
    Used
    • Denali Ultimate
    • 8K mi
    86,865
    Used 2024 GMC Sierra 2500 Denali w/ Technology Package
    Used
    • Denali
    • 24K mi
    71,405
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    Used 2018 GMC Sierra 2500 Denali w/ Duramax Plus Package
    • Denali
    • 95K mi
    49,220
    Used 2018 GMC Sierra 2500 SLT w/ Duramax Plus Package
    42,988
    Used 2019 GMC Sierra 2500 Denali w/ Duramax Plus Package
    Used
    • Denali
    • 84K mi
    48,290
    Used 2021 GMC Sierra 2500 SLT w/ SLT Premium Package
    50,593
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    Certified 2022 GMC Sierra 2500 Denali
    Certified
    • Denali
    • 833 mi
    69,389
    Used 2026 GMC Sierra 2500 Denali Ultimate w/ Max Trailering Package
    Used
    • Denali Ultimate
    • 925 mi
    89,302
    Used 2025 GMC Sierra 2500 SLE w/ SLE Value Package;
    62,530
    Used 2024 GMC Sierra 2500 AT4X
    Used
    • AT4X
    • 23K mi
    79,591
    Used 2023 GMC Sierra 2500 AT4 w/ AT4 Premium Plus Package
    57,655
    Used 2023 GMC Sierra 2500 AT4 w/ Gooseneck/5TH Wheel Package
    61,897
    Used 2019 GMC Sierra 2500 4x4 Crew Cab
    Used
    • 4x4 Crew Cab
    • 82K mi
    26,400
    Used 2025 GMC Sierra 2500 AT4X
    Used
    • AT4X
    • 14K mi
    85,000
    Used 2023 GMC Sierra 2500 Denali w/ Denali Black Diamond Edition
    Used
    • Denali
    • 54K mi
    62,649
    Used 2024 GMC Sierra 2500 Pro w/ Convenience Package
    48,495
    Used 2013 GMC Sierra 2500 SLT
    Used
    • SLT
    • 146K mi
    28,257
    Used 2024 GMC Sierra 2500 AT4 w/ AT4 Premium Plus Package
    67,970
    Used 2022 GMC Sierra 2500 SLT w/ SLT Convenience Package
    41,569

    GMC Sierra 2500 for Sale by Year

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