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Used 2021 GMC Sierra 1500 for Sale in Castle Rock, CO

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Items 1 to 2 of 11.
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    Used 2021 GMC Sierra 1500 AT4 w/ AT4 Preferred Package
    38,574
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    Used 2021 GMC Sierra 1500 Denali w/ Denali Ultimate Package
    Used
    • Denali
    • 105K mi
    36,899
    Used 2021 GMC Sierra 1500 AT4 w/ AT4 Preferred Package
    Used
    • AT4
    • 111K mi
    35,810
    Used 2021 GMC Sierra 1500 Elevation w/ Preferred Package
    Used
    • Elevation
    • 32K mi
    38,097
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    Based on 4.5% APR for mos.
    Used 2021 GMC Sierra 1500 Elevation w/ X31 Off-Road Package
    Used
    • Elevation
    • 59K mi
    36,516
    Great Price
    Used 2021 GMC Sierra 1500 SLT w/ SLT Convenience Package
    41,849
    Great Price
    New 2025 GMC Sierra 1500 Pro w/ Pro Value Package
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    Used 2021 GMC Sierra 1500 AT4 w/ AT4 Value Package
    36,644
    Great Price
    Item 1 of 4.
    47,093
    Used 2021 GMC Sierra 1500 Denali w/ Denali Ultimate Package
    Used
    • Denali
    • 84K mi
    38,516
    Good Price
    Used 2021 GMC Sierra 1500 AT4 w/ AT4 Preferred Package
    43,988
    Used 2021 GMC Sierra 1500 AT4
    47,093
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    Used 2021 GMC Sierra 1500 AT4
    46,740
    Used 2021 GMC Sierra 1500 Elevation
    Used
    • Elevation
    • 97K mi
    29,500
    Used 2021 GMC Sierra 1500 Elevation w/ Preferred Package
    Used
    • Elevation
    • 32K mi
    38,097
    Used 2021 GMC Sierra 1500 SLT
    33,998
    Great Price
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    Used 2021 GMC Sierra 1500 Elevation w/ Preferred Package
    Used
    • Elevation
    • 85K mi
    33,451
    Used 2021 GMC Sierra 1500 4x4 Double Cab w/ Fleet Convenience Package
    Used
    • 4x4 Double Cab
    • 91K mi
    25,000
    Used 2021 GMC Sierra 1500 Elevation w/ X31 Off-Road Package
    Used
    • Elevation
    • 69K mi
    36,593
    Good Price
    Used 2021 GMC Sierra 1500 AT4 w/ AT4 Preferred Package
    Used
    • AT4
    • 111K mi
    35,810
    Used 2021 GMC Sierra 1500 SLT
    33,934
    Used 2021 GMC Sierra 1500 AT4
    37,736
    Used 2021 GMC Sierra 1500 Denali w/ Denali Ultimate Package
    Used
    • Denali
    • 66K mi
    45,990
    Used 2021 GMC Sierra 1500 Elevation w/ X31 Off-Road Package
    Used
    • Elevation
    • 135K mi
    26,997
    Used 2021 GMC Sierra 1500 AT4
    38,697
    Used 2021 GMC Sierra 1500 SLT w/ SLT Premium Package
    35,568
    Used 2021 GMC Sierra 1500 Elevation w/ X31 Off-Road Package
    Used
    • Elevation
    • 83K mi
    34,799
    Used 2021 GMC Sierra 1500 Denali w/ Denali Ultimate Package
    Used
    • Denali
    • 46K mi
    46,584
    Good Price
    Used 2021 GMC Sierra 1500 Denali w/ Denali Ultimate Package
    Used
    • Denali
    • 105K mi
    36,899
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