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Used GMC Sierra 3500 for Sale in Boulder, CO

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    Sponsored by O'Meara GMC
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    Used 2026 GMC Sierra 3500 Denali w/ Denali Reserve Package
    84,352
    Dealer Fees Included
    O'Meara GMC
    (720) 702-3361
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    Certified 2024 GMC Sierra 3500 Denali Ultimate

    2024 GMC Sierra 3500

    • Denali Ultimate
    • 19K mi
    79,187
    Great Price
    Dealer Fees Included
    No Accidents
    Sponsored by JOHNSON AUTO PLAZA
    • 24.27 mi. away
    • Delivery
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    Used 2025 GMC Sierra 3500 Denali Ultimate
    Used

    2025 GMC Sierra 3500

    • Denali Ultimate
    • 23K mi
    83,290
    Dealer Fees Included
    No Accidents
    Sponsored by Weld County Garage
    • 38.17 mi. away
    • Online Paperwork
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    Used 2024 GMC Sierra 3500 Denali w/ Denali Reserve Package
    Used

    2024 GMC Sierra 3500

    • Denali
    • 51K mi
    66,500
    Good Price
    Dealer Fees Included
    No Accidents
    Sponsored by Berkenkotter Motors
    • 49.86 mi. away
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    Based on 4.5% APR for mos.
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    Used 2022 GMC Sierra 3500 Denali w/ Denali Ultimate Package
    Used

    2022 GMC Sierra 3500

    • Denali
    • 33K mi
    63,828
    Great Price
    Dealer Fees Included
    No Accidents
    O'Meara GMC
    • 17.45 mi. away
    • Online Paperwork
    • Delivery
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    Used 2026 GMC Sierra 3500 Denali w/ Denali Reserve Package
    Used

    2026 GMC Sierra 3500

    • Denali
    • 4K mi
    84,352
    Dealer Fees Included
    No Accidents
    O'Meara GMC
    • 17.45 mi. away
    • Online Paperwork
    • Delivery
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    New 2026 GMC Sierra 3500 Denali Ultimate w/ LPO, Black Badging Package
    Consider Buying New

    2026 GMC Sierra 3500

    • Denali Ultimate
    • 4 mi
    100,904
    Castle Rock Chevrolet GMC
    • 51.03 mi. away
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    Certified 2024 GMC Sierra 3500 Denali Ultimate

    2024 GMC Sierra 3500

    • Denali Ultimate
    • 19K mi
    79,187
    Great Price
    Dealer Fees Included
    No Accidents
    JOHNSON AUTO PLAZA
    • 24.27 mi. away
    • Delivery
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    Newly Listed
    Used 2025 GMC Sierra 3500 SLE w/ SLE Convenience Package
    Used

    2025 GMC Sierra 3500

    • SLE
    • 11K mi
    49,591
    Great Price
    Dealer Fees Included
    No Accidents
    ClearShift
    • 35.61 mi. away
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    Used 2013 GMC Sierra 3500 Denali
    Used

    2013 GMC Sierra 3500

    • Denali
    • 62K mi
    41,273
    Dealer Fees Included
    No Accidents
    Emich Chevrolet
    • 25.91 mi. away
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    Used 2022 GMC Sierra 3500 Denali w/ Denali Ultimate Package
    Used

    2022 GMC Sierra 3500

    • Denali
    • 38K mi
    62,590
    Great Price
    Dealer Fees Included
    No Accidents
    ClearShift
    • 35.61 mi. away
    Call
    Used 2023 GMC Sierra 3500 Denali w/ Denali Black Diamond Edition
    Used

    2023 GMC Sierra 3500

    • Denali
    • 26K mi
    65,590
    Great Price
    Dealer Fees Included
    No Accidents
    ClearShift
    • 35.61 mi. away
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    Used 2024 GMC Sierra 3500 Denali
    Used

    2024 GMC Sierra 3500

    • Denali
    • 77K mi
    61,549
    Good Price
    Dealer Fees Included
    No Accidents
    AutoNation Buick GMC West
    • 20.98 mi. away
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    Used 2013 GMC Sierra 3500 SLE w/ SLE Preferred Package
    Used

    2013 GMC Sierra 3500

    • SLE
    • 134K mi
    20,979
    Skyline Mitsubishi
    • 17.38 mi. away
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    Used 2015 GMC Sierra 3500 Denali w/ Duramax Plus Package
    Used

    2015 GMC Sierra 3500

    • Denali
    • 116K mi
    37,211
    Dealer Fees Included
    No Accidents
    Alpine Nissan
    • 17.23 mi. away
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    Used 2025 GMC Sierra 3500 Denali Ultimate

    2025 GMC Sierra 3500

    • Denali Ultimate
    • 52K mi
    75,998
    Dealer Fees Included
    No Accidents
    Phil Long Ford Denver
    • 28.74 mi. away
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    Used 1999 GMC Sierra 3500 4x4 Crew Cab w/ Marketing Option Pkg 3
    Used

    1999 GMC Sierra 3500

    • 4x4 Crew Cab
    • 27K mi
    34,999
    No Accidents
    Victory Motors of Colorado
    • 14.93 mi. away
    Call
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    Used 2003 GMC Sierra 3500 SLE
    Used

    2003 GMC Sierra 3500

    • SLE
    • 46K mi
    41,999
    No Accidents
    Victory Motors of Colorado
    • 14.93 mi. away
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    Used 2023 GMC Sierra 3500 Pro w/ Convenience Package
    Used

    2023 GMC Sierra 3500

    • Pro
    • 34K mi
    40,722
    Good Price
    Dealer Fees Included
    No Accidents
    McDonald Toyota
    • 38.24 mi. away
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    Used 2022 GMC Sierra 3500 Denali
    Used

    2022 GMC Sierra 3500

    • Denali
    • 83K mi
    53,990
    Great Price
    Dealer Fees Included
    No Accidents
    AutoNation Chrysler Dodge Jeep Ram Arapahoe
    • 36.93 mi. away
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    Used 2024 GMC Sierra 3500 AT4 w/ AT4 Premium Plus Package
    Used

    2024 GMC Sierra 3500

    • AT4
    • 44K mi
    66,586
    Great Price
    Dealer Fees Included
    No Accidents
    ClearShift
    • 35.61 mi. away
    Call
    Used 2007 GMC Sierra 3500 SLT w/ Convenience Package
    Used

    2007 GMC Sierra 3500

    • SLT
    • 227K mi
    16,500
    No Accidents
    Private Seller Exchange
    • 24.44 mi. away
    • Buy Online. Clean title. No Hassle
    Used 2026 GMC Sierra 3500 SLT w/ SLT Premium Package
    Used

    2026 GMC Sierra 3500

    • SLT
    • 400 mi
    72,625
    No Accidents
    Transwest GMC
    • 23.12 mi. away
    Call
    Used 2024 GMC Sierra 3500 Denali w/ Technology Package
    Used

    2024 GMC Sierra 3500

    • Denali
    • 57K mi
    69,330
    Good Price
    Dealer Fees Included
    No Accidents
    ClearShift
    • 35.61 mi. away
    Call
    Used 2024 GMC Sierra 3500 AT4 w/ AT4 Premium Plus Package

    2024 GMC Sierra 3500

    • AT4
    • 65K mi
    63,382
    Good Price
    Dealer Fees Included
    No Accidents
    Ken Garff Ford Fort Collins
    • 36.38 mi. away
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    Used 2022 GMC Sierra 3500 SLT w/ SLT Premium Package
    Used

    2022 GMC Sierra 3500

    • SLT
    • 127K mi
    43,500
    Dealer Fees Included
    No Accidents
    Berkenkotter Motors
    • 24.96 mi. away
    Call
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    Used 2024 GMC Sierra 3500 Denali Ultimate
    Used

    2024 GMC Sierra 3500

    • Denali Ultimate
    • 76K mi
    68,200
    No Accidents
    O'Meara Ford
    • 18.28 mi. away
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    Certified 2021 GMC Sierra 3500 Denali w/ Denali Ultimate Package

    2021 GMC Sierra 3500

    • Denali
    • 12K mi
    67,438
    Good Price
    Dealer Fees Included
    No Accidents
    Can be shipped to
    Alpine Buick GMC
    • 28.82 mi. away
    • Delivery
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    Used 2024 GMC Sierra 3500 Denali w/ Denali Reserve Package
    Used

    2024 GMC Sierra 3500

    • Denali
    • 78K mi
    63,590
    Dealer Fees Included
    No Accidents
    ClearShift
    • 35.61 mi. away
    Call
    Used 2026 GMC Sierra 3500 Denali Ultimate
    Used

    2026 GMC Sierra 3500

    • Denali Ultimate
    • 16K mi
    84,592
    Dealer Fees Included
    No Accidents
    ClearShift
    • 35.61 mi. away
    Call
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    GMC Sierra 3500 for Sale by Year

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