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Used GMC Sierra 2500 AT4 for Sale in Ontario, CA

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    Sponsored by Tustin Buick GMC
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    Newly Listed
    Used 2021 GMC Sierra 2500 AT4
    45,617
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    Great Price
    Dealer Fees Included
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    19 Matches

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    Used 2025 GMC Sierra 2500 AT4 w/ Technology Package
    Used

    2025 GMC Sierra 2500

    • AT4
    • 20K mi
    70,399
    Great Price
    Dealer Fees Included
    No Accidents
    Sponsored by Knight Claremont Chrysler Dodge Jeep Ram
    • 7.18 mi. away
    • Delivery
    Call
    Used 2022 GMC Sierra 2500 AT4 w/ AT4 Preferred Package

    2022 GMC Sierra 2500

    • AT4
    • 68K mi
    54,085
    Dealer Fees Included
    Sponsored by Sunrise Ford of Fontana
    • 9.65 mi. away
    Call
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    Used 2025 GMC Sierra 2500 AT4
    Used

    2025 GMC Sierra 2500

    • AT4
    • 15K mi
    70,599
    Great Price
    Dealer Fees Included
    No Accidents
    Sponsored by Knight Claremont Chrysler Dodge Jeep Ram
    • 7.18 mi. away
    • Delivery
    Call
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    $

    Based on 4.5% APR for mos.
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    Used 2025 GMC Sierra 2500 AT4
    Used

    2025 GMC Sierra 2500

    • AT4
    • 38K mi
    67,799
    Great Price
    Dealer Fees Included
    No Accidents
    Knight Claremont Chrysler Dodge Jeep Ram
    • 7.18 mi. away
    • Delivery
    Call
    360°
    Used 2025 GMC Sierra 2500 AT4 w/ Technology Package
    Used

    2025 GMC Sierra 2500

    • AT4
    • 20K mi
    70,399
    Great Price
    Dealer Fees Included
    No Accidents
    Knight Claremont Chrysler Dodge Jeep Ram
    • 7.18 mi. away
    • Delivery
    Call
    New 2026 GMC Sierra 2500 AT4 w/ AT4 Premium Plus Package
    Consider Buying New

    2026 GMC Sierra 2500

    • AT4
    • 0 mi
    89,090
    Reynolds GMC
    • 16 mi. away
    Call
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    Used 2025 GMC Sierra 2500 AT4
    Used

    2025 GMC Sierra 2500

    • AT4
    • 15K mi Mileage Value
    70,599
    Great Price
    Dealer Fees Included
    No Accidents
    Knight Claremont Chrysler Dodge Jeep Ram
    • 7.18 mi. away
    • Delivery
    Call
    Used 2023 GMC Sierra 2500 AT4 w/ AT4 Premium Plus Package
    Used

    2023 GMC Sierra 2500

    • AT4
    • 28K mi
    63,130
    Great Price
    Dealer Fees Included
    Kargenie
    • 11.45 mi. away
    Call
    Used 2023 GMC Sierra 2500 AT4 w/ AT4 Premium Plus Package
    Used

    2023 GMC Sierra 2500

    • AT4
    • 21K mi
    68,080
    Good Price
    Dealer Fees Included
    No Accidents
    Simpson Buick GMC Cadillac of Buena Park
    • 24.33 mi. away
    • Delivery
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    Used 2022 GMC Sierra 2500 AT4 w/ AT4 Premium Plus Package
    Used

    2022 GMC Sierra 2500

    • AT4
    • 38K mi
    59,995
    No Accidents
    Pacific Auto Center
    • 10.19 mi. away
    • Delivery
    Call
    Used 2023 GMC Sierra 2500 AT4
    Used

    2023 GMC Sierra 2500

    • AT4
    • 17K mi
    65,995
    No Accidents
    Pacific Auto Center
    • 10.19 mi. away
    • Delivery
    Call
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    Used 2025 GMC Sierra 2500 AT4
    Used

    2025 GMC Sierra 2500

    • AT4
    • 25K mi
    69,597
    Great Price
    Dealer Fees Included
    No Accidents
    Tustin Buick GMC
    • 23.36 mi. away
    Call
    Used 2025 GMC Sierra 2500 AT4
    Used

    2025 GMC Sierra 2500

    • AT4
    • 23K mi
    69,617
    Great Price
    Dealer Fees Included
    No Accidents
    Tustin Buick GMC
    • 23.36 mi. away
    Call
    Used 2022 GMC Sierra 2500 AT4 w/ AT4 Preferred Package

    2022 GMC Sierra 2500

    • AT4
    • 68K mi
    54,085
    Dealer Fees Included
    Sunrise Ford of Fontana
    • 9.65 mi. away
    Call
    Used 2024 GMC Sierra 2500 AT4 w/ AT4 Premium Plus Package
    Used

    2024 GMC Sierra 2500

    • AT4
    • 35K mi
    66,585
    No Accidents
    Fontana Motors Direct
    • 9.47 mi. away
    • Online Paperwork
    Call
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    Used 2024 GMC Sierra 2500 AT4 w/ AT4 Preferred Package
    Used

    2024 GMC Sierra 2500

    • AT4
    • 26K mi
    71,995
    No Accidents
    Pacific Auto Center
    • 10.19 mi. away
    • Delivery
    Call
    Used 2023 GMC Sierra 2500 AT4 w/ AT4 Preferred Package
    Used

    2023 GMC Sierra 2500

    • AT4
    • 83K mi
    54,995
    No Accidents
    Pacific Auto Center
    • 10.19 mi. away
    • Delivery
    Call
    No Image Available
    Used

    2024 GMC Sierra 2500

    • AT4
    • 35K mi
    65,066
    Great Price
    Dealer Fees Included
    No Accidents
    Porsche Riverside
    • 13.24 mi. away
    Call
    Used 2025 GMC Sierra 2500 AT4
    Used

    2025 GMC Sierra 2500

    • AT4
    • 51K mi
    67,547
    Good Price
    Dealer Fees Included
    Tustin Buick GMC
    • 23.36 mi. away
    Call
    Price Drop
    Used 2023 GMC Sierra 2500 AT4 w/ Gooseneck/5TH Wheel Package
    Used

    2023 GMC Sierra 2500

    • AT4
    • 96K mi
    50,988
    No Accidents
    CARFAM
    • 13.67 mi. away
    • Delivery
    Call
    Newly Listed
    Used 2021 GMC Sierra 2500 AT4
    Used

    2021 GMC Sierra 2500

    • AT4
    • 134K mi
    45,617
    Great Price
    Dealer Fees Included
    Dealer
    • 23.36 mi. away
    Call
    Newly Listed
    Used 2024 GMC Sierra 2500 AT4 w/ AT4 Premium Plus Package
    Used

    2024 GMC Sierra 2500

    • AT4
    • 31K mi
    Contact Dealer For Price
    No Accidents
    Dutton Buick GMC Cadillac in the Riverside Auto Center
    • 13.41 mi. away
    • Delivery
    Call
    Newly Listed
    No Image Available
    Used

    2024 GMC Sierra 2500

    • AT4
    • 91K mi
    Contact Dealer For Price
    No Accidents
    Simpson Buick GMC Cadillac of Buena Park
    • 24.33 mi. away
    • Delivery
    Call
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