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Used GMC Sierra 3500 for Sale in Castle Rock, CO

80104
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Items 1 to 2 of 9.
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    Used 2023 GMC Sierra 3500 Denali w/ Denali Ultimate Package
    66,991
    Great Price
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    Used 2021 GMC Sierra 3500 Denali w/ Technology Package
    Used
    • Denali
    • 91K mi
    49,850
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    Great Price
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    Used 2024 GMC Sierra 3500 Denali
    Used
    • Denali
    • 46K mi
    66,993
    See payment
    Great Price
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    Used 2012 GMC Sierra 3500 SLE w/ Suspension Package, Off-Road
    Used
    • SLE
    • 174K mi
    19,417
    See payment
    Good Price
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    Certified 2024 GMC Sierra 3500 Denali w/ Denali Reserve Package
    Certified
    • Denali
    • 13K mi
    73,297
    See payment
    Great Price
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    Used 2020 GMC Sierra 3500 Denali w/ Denali Ultimate Package
    Ford Blue Certified
    • Denali
    • 52K mi
    54,699
    See payment
    Great Price
    New 2026 GMC Sierra 3500 Denali w/ Denali Reserve Package
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    Used 2024 GMC Sierra 3500 SLT w/ SLT Convenience Package
    67,988
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    Great Price
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    Used
    • Denali Ultimate
    • 32K mi
    80,991
    See payment
    Used 2021 GMC Sierra 3500 SLT w/ SLT Premium Package
    59,845
    See payment
    Used 2022 GMC Sierra 3500 Denali w/ Denali Ultimate Package
    Used
    • Denali
    • 21K mi
    67,986
    See payment
    Good Price
    Price Drop
    Used 2025 GMC Sierra 3500 Denali w/ Denali Reserve Package
    Used
    • Denali
    • 14K mi
    75,991
    See payment
    Good Price
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    Used 2013 GMC Sierra 3500 W/T
    Used
    • W/T
    • 195K mi
    16,500
    See payment
    Good Price
    Certified 2026 GMC Sierra 3500 SLT w/ SLT Premium Package
    Certified
    • SLT
    • 355 mi
    79,599
    See payment
    360°
    Used 2024 GMC Sierra 3500 SLT
    62,997
    See payment
    Great Price
    Used 2022 GMC Sierra 3500 Denali
    Used
    • Denali
    • 83K mi
    49,991
    See payment
    Great Price
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    Used 2017 GMC Sierra 3500 Denali w/ Duramax Plus Package
    Used
    • Denali
    • 160K mi
    39,098
    See payment
    Used 2023 GMC Sierra 3500 Denali w/ Denali Ultimate Package
    Used
    • Denali
    • 34K mi
    63,749
    See payment
    Great Price
    Used 2024 GMC Sierra 3500 SLE
    48,995
    See payment
    Great Price
    Used 2021 GMC Sierra 3500 Denali w/ Denali Black Diamond Edition
    Used
    • Denali
    • 89K mi
    53,995
    See payment
    Great Price
    Used 2025 GMC Sierra 3500 SLT
    65,989
    See payment
    Great Price
    Used 2024 GMC Sierra 3500 Denali
    Used
    • Denali
    • 46K mi
    66,993
    See payment
    Great Price
    Used 2025 GMC Sierra 3500 AT4 w/ AT4 Premium Plus Package
    72,977
    See payment
    Used 2025 GMC Sierra 3500 Denali Ultimate
    Used
    • Denali Ultimate
    • 23K mi
    79,991
    See payment
    Great Price
    Used 2012 GMC Sierra 3500 SLE w/ Suspension Package, Off-Road
    Used
    • SLE
    • 174K mi
    19,417
    See payment
    Good Price
    Newly Listed360°
    Used 2024 GMC Sierra 3500 Denali Ultimate
    Used
    • Denali Ultimate
    • 32K mi
    80,991
    See payment
    Used 2024 GMC Sierra 3500 Denali Ultimate
    Used
    • Denali Ultimate
    • 32K mi
    86,000
    See payment
    Price Drop
    Used 2021 GMC Sierra 3500 Denali w/ Technology Package
    Used
    • Denali
    • 91K mi
    49,850
    See payment
    Great Price
    Newly Listed
    Used 2024 GMC Sierra 3500 SLT
    62,099
    See payment
    Great Price
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