Skip to main content
Best match Lowest price Highest price Lowest mileage Highest mileage Nearest location Best deal Newest year Oldest year Newest listed Oldest listed
Skip to Filters
  • Gray 2021 GMC Sierra 1500 AT4Gray 2021 GMC Sierra 1500 AT4Gray 2021 GMC Sierra 1500 AT4Gray 2021 GMC Sierra 1500 AT4Gray 2021 GMC Sierra 1500 AT4Gray 2021 GMC Sierra 1500 AT4

    $38,000

    $390
    97,151 mi.
    Est. $663/mo

    Weld County Garage GMC Hummer

    4.5
    Check Availability
    Greeley, CO (3 mi)

    Quick view
  • Summit White 2024 GMC Sierra 1500 AT4Summit White 2024 GMC Sierra 1500 AT4Summit White 2024 GMC Sierra 1500 AT4Summit White 2024 GMC Sierra 1500 AT4Summit White 2024 GMC Sierra 1500 AT4Summit White 2024 GMC Sierra 1500 AT4

    $55,997

    29,205 mi.
    Est. $978/mo

    ClearShift - Loveland

    4.7
    Check Availability
    Loveland, CO (19 mi)

    Quick view
  • Onyx Black 2023 GMC Sierra 1500 AT4Onyx Black 2023 GMC Sierra 1500 AT4Onyx Black 2023 GMC Sierra 1500 AT4Onyx Black 2023 GMC Sierra 1500 AT4Onyx Black 2023 GMC Sierra 1500 AT4Onyx Black 2023 GMC Sierra 1500 AT4

    $57,470

    40,830 mi.
    Est. $1,003/mo

    Loveland Ford Lincoln

    4.3
    Check Availability
    Loveland, CO (17 mi)
    Quick view
  • Sterling Metallic 2025 GMC Sierra 1500 AT4Sterling Metallic 2025 GMC Sierra 1500 AT4Sterling Metallic 2025 GMC Sierra 1500 AT4Sterling Metallic 2025 GMC Sierra 1500 AT4Sterling Metallic 2025 GMC Sierra 1500 AT4Sterling Metallic 2025 GMC Sierra 1500 AT4

    $59,210

    $601
    11,240 mi.
    Est. $1,034/mo

    BMW of Loveland

    4.9
    Check Availability
    Loveland, CO (16 mi)
    Quick view
  • Onyx Black 2025 GMC Sierra 1500 AT4Onyx Black 2025 GMC Sierra 1500 AT4Onyx Black 2025 GMC Sierra 1500 AT4Onyx Black 2025 GMC Sierra 1500 AT4Onyx Black 2025 GMC Sierra 1500 AT4Onyx Black 2025 GMC Sierra 1500 AT4

    $56,792

    41,499 mi.
    Est. $991/mo

    Davidson/Gebhardt Chevrolet

    Check Availability
    Loveland, CO (16 mi)
    Quick view
  • Summit White 2023 GMC Sierra 1500 AT4Summit White 2023 GMC Sierra 1500 AT4Summit White 2023 GMC Sierra 1500 AT4Summit White 2023 GMC Sierra 1500 AT4Summit White 2023 GMC Sierra 1500 AT4Summit White 2023 GMC Sierra 1500 AT4

    $49,548

    $1.1K
    60,636 mi.
    Est. $865/mo

    Ken Garff Ford Greeley

    3.8
    Check Availability
    Ft. Collins, CO (3 mi)
    Quick view
  • Dynamic Blue Metallic 2023 GMC Sierra 1500 AT4Dynamic Blue Metallic 2023 GMC Sierra 1500 AT4Dynamic Blue Metallic 2023 GMC Sierra 1500 AT4Dynamic Blue Metallic 2023 GMC Sierra 1500 AT4Dynamic Blue Metallic 2023 GMC Sierra 1500 AT4Dynamic Blue Metallic 2023 GMC Sierra 1500 AT4

    $45,471

    80,609 mi.
    Est. $794/mo

    Loveland Ford Lincoln

    4.3
    Check Availability
    Loveland, CO (17 mi)
    Quick view
  • Black 2021 GMC Sierra 1500 AT4Black 2021 GMC Sierra 1500 AT4Black 2021 GMC Sierra 1500 AT4Black 2021 GMC Sierra 1500 AT4Black 2021 GMC Sierra 1500 AT4Black 2021 GMC Sierra 1500 AT4

    $34,890

    122,890 mi.
    Est. $609/mo

    Berkenkotter Motors Brighton

    4.1
    Check Availability
    Brighton, CO (26 mi)
    Quick view
  • Thunderstorm Gray 2024 GMC Sierra 1500 AT4Thunderstorm Gray 2024 GMC Sierra 1500 AT4Thunderstorm Gray 2024 GMC Sierra 1500 AT4Thunderstorm Gray 2024 GMC Sierra 1500 AT4Thunderstorm Gray 2024 GMC Sierra 1500 AT4Thunderstorm Gray 2024 GMC Sierra 1500 AT4

    $57,639

    $999
    24,625 mi.
    Est. $1,006/mo

    Loveland Buick GMC

    Check Availability
    Loveland, CO (16 mi)
    Quick view
  • Gray 2024 GMC Sierra 1500 AT4Gray 2024 GMC Sierra 1500 AT4Gray 2024 GMC Sierra 1500 AT4Gray 2024 GMC Sierra 1500 AT4Gray 2024 GMC Sierra 1500 AT4Gray 2024 GMC Sierra 1500 AT4

    $51,590

    52,940 mi.
    Est. $901/mo

    Weld County Garage GMC Hummer

    4.5
    Check Availability
    Greeley, CO (3 mi)
    Quick view
  • Black 2025 GMC Sierra 1500 AT4Black 2025 GMC Sierra 1500 AT4Black 2025 GMC Sierra 1500 AT4Black 2025 GMC Sierra 1500 AT4Black 2025 GMC Sierra 1500 AT4Black 2025 GMC Sierra 1500 AT4

    $52,794

    $498
    61,430 mi.
    Est. $922/mo

    Weld County Garage GMC Hummer

    4.5
    Check Availability
    Greeley, CO (3 mi)
    Quick view
  • Satin Steel Metallic 2022 GMC Sierra 1500 AT4Satin Steel Metallic 2022 GMC Sierra 1500 AT4Satin Steel Metallic 2022 GMC Sierra 1500 AT4Satin Steel Metallic 2022 GMC Sierra 1500 AT4Satin Steel Metallic 2022 GMC Sierra 1500 AT4Satin Steel Metallic 2022 GMC Sierra 1500 AT4

    $46,678

    $3.7K
    27,999 mi.
    Est. $815/mo

    Loveland Buick GMC

    Check Availability
    Loveland, CO (16 mi)
    Quick view
  • Titanium Rush Metallic 2023 GMC Sierra 1500 AT4Titanium Rush Metallic 2023 GMC Sierra 1500 AT4Titanium Rush Metallic 2023 GMC Sierra 1500 AT4Titanium Rush Metallic 2023 GMC Sierra 1500 AT4Titanium Rush Metallic 2023 GMC Sierra 1500 AT4Titanium Rush Metallic 2023 GMC Sierra 1500 AT4

    $50,109

    $917
    59,992 mi.
    Est. $875/mo

    Loveland Buick GMC

    Check Availability
    Loveland, CO (16 mi)
    Quick view
  • 2021 GMC Sierra 1500 AT42021 GMC Sierra 1500 AT42021 GMC Sierra 1500 AT42021 GMC Sierra 1500 AT42021 GMC Sierra 1500 AT42021 GMC Sierra 1500 AT4

    $43,950

    $285
    47,146 mi.
    Est. $767/mo

    Sterling Auto Sales - Frederick

    Check Availability
    Longmont, CO (23 mi)
    Quick view
  • Cayenne Red Tintcoat 2021 GMC Sierra 1500 AT4Cayenne Red Tintcoat 2021 GMC Sierra 1500 AT4Cayenne Red Tintcoat 2021 GMC Sierra 1500 AT4Cayenne Red Tintcoat 2021 GMC Sierra 1500 AT4

    $44,691

    75,869 mi.
    Est. $780/mo

    Loveland Ford Lincoln

    4.3
    Check Availability
    Loveland, CO (17 mi)
    Quick view
  • Onyx Black 2019 GMC Sierra 1500 AT4Onyx Black 2019 GMC Sierra 1500 AT4Onyx Black 2019 GMC Sierra 1500 AT4Onyx Black 2019 GMC Sierra 1500 AT4Onyx Black 2019 GMC Sierra 1500 AT4Onyx Black 2019 GMC Sierra 1500 AT4

    $31,092

    $805
    93,245 mi.
    Est. $543/mo

    Sterling Auto Sales - Frederick

    Check Availability
    Longmont, CO (23 mi)
    Quick view
  • Onyx Black 2025 GMC Sierra 1500 AT4Onyx Black 2025 GMC Sierra 1500 AT4Onyx Black 2025 GMC Sierra 1500 AT4Onyx Black 2025 GMC Sierra 1500 AT4Onyx Black 2025 GMC Sierra 1500 AT4Onyx Black 2025 GMC Sierra 1500 AT4

    $48,500

    $600
    26,711 mi.
    Est. $847/mo

    AutoSavvy Windsor

    4.4
    Check Availability
    Windsor, CO (11 mi)
    Quick view
  • Satin Steel Metallic 2021 GMC Sierra 1500 AT4Satin Steel Metallic 2021 GMC Sierra 1500 AT4

    $31,403

    142,945 mi.
    Est. $548/mo

    Mike Maroone Chevrolet GMC

    4.0
    Longmont, CO (23 mi)
    Quick view
  • Summit White 2024 GMC Sierra 1500 AT4Summit White 2024 GMC Sierra 1500 AT4

    $52,503

    58,199 mi.
    Est. $917/mo

    Mike Maroone Chevrolet GMC

    4.0
    Longmont, CO (23 mi)
    Quick view
  • Onyx Black 2022 GMC Sierra 1500 AT4

    Not Priced

    14,160 mi.

    Subaru of Loveland

    5.0
    Check Availability
    Loveland, CO (16 mi)
    Quick view
  • $36,300

    92,696 mi.
    Est. $634/mo

    Pedersen Toyota

    4.2
    Check Availability
    Fort Collins, CO (22 mi)
    Quick view
  • Thunderstorm Gray 2024 GMC Sierra 1500 AT4Thunderstorm Gray 2024 GMC Sierra 1500 AT4Thunderstorm Gray 2024 GMC Sierra 1500 AT4Thunderstorm Gray 2024 GMC Sierra 1500 AT4Thunderstorm Gray 2024 GMC Sierra 1500 AT4Thunderstorm Gray 2024 GMC Sierra 1500 AT4

    $52,900

    37,180 mi.
    Est. $924/mo

    Harvest Auto Family

    Check Availability
    $643 delivery from Wahoo, NE (429 mi)
    Quick view
  • Titanium Rush Metallic 2023 GMC Sierra 1500 AT4Titanium Rush Metallic 2023 GMC Sierra 1500 AT4Titanium Rush Metallic 2023 GMC Sierra 1500 AT4Titanium Rush Metallic 2023 GMC Sierra 1500 AT4Titanium Rush Metallic 2023 GMC Sierra 1500 AT4Titanium Rush Metallic 2023 GMC Sierra 1500 AT4

    $52,991

    38,102 mi.
    Est. $925/mo

    Mark Kia

    4.1
    Check Availability
    $1,237 delivery from Scottsdale, AZ (619 mi)
    Quick view
  • Sterling Metallic 2023 GMC Sierra 1500 AT4Sterling Metallic 2023 GMC Sierra 1500 AT4Sterling Metallic 2023 GMC Sierra 1500 AT4Sterling Metallic 2023 GMC Sierra 1500 AT4Sterling Metallic 2023 GMC Sierra 1500 AT4Sterling Metallic 2023 GMC Sierra 1500 AT4

    $49,093

    58,192 mi.
    Est. $857/mo

    Transwest GMC Denver

    4.8
    Check Availability
    Henderson, CO (37 mi)
    Quick view
  • Summit White 2024 GMC Sierra 1500 AT4Summit White 2024 GMC Sierra 1500 AT4Summit White 2024 GMC Sierra 1500 AT4Summit White 2024 GMC Sierra 1500 AT4Summit White 2024 GMC Sierra 1500 AT4Summit White 2024 GMC Sierra 1500 AT4

    $47,987

    97,322 mi.
    Est. $838/mo

    Celebration Chevrolet

    4.0
    Check Availability
    Aurora, CO (49 mi)
    Quick view
  • Titanium Rush Metallic 2022 GMC Sierra 1500 AT4Titanium Rush Metallic 2022 GMC Sierra 1500 AT4Titanium Rush Metallic 2022 GMC Sierra 1500 AT4Titanium Rush Metallic 2022 GMC Sierra 1500 AT4Titanium Rush Metallic 2022 GMC Sierra 1500 AT4Titanium Rush Metallic 2022 GMC Sierra 1500 AT4

    $45,999

    59,493 mi.
    Est. $803/mo

    Freeway Ford

    3.4
    Check Availability
    Denver, CO (50 mi)
    Quick view
  • Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4

    $45,189

    $2.6K
    39,104 mi.
    Est. $789/mo

    Alpine Chevrolet

    4.5
    Check Availability
    Aurora, CO (45 mi)
    Quick view
  • Volcanic Red 2024 GMC Sierra 1500 AT4Volcanic Red 2024 GMC Sierra 1500 AT4Volcanic Red 2024 GMC Sierra 1500 AT4Volcanic Red 2024 GMC Sierra 1500 AT4Volcanic Red 2024 GMC Sierra 1500 AT4Volcanic Red 2024 GMC Sierra 1500 AT4

    $51,689

    62,697 mi.
    Est. $902/mo

    Alpine Chevrolet

    4.5
    Check Availability
    Aurora, CO (45 mi)
    Quick view
  • Onyx Black 2024 GMC Sierra 1500 AT4Onyx Black 2024 GMC Sierra 1500 AT4Onyx Black 2024 GMC Sierra 1500 AT4Onyx Black 2024 GMC Sierra 1500 AT4Onyx Black 2024 GMC Sierra 1500 AT4Onyx Black 2024 GMC Sierra 1500 AT4

    $53,049

    46,466 mi.
    Est. $926/mo

    Shortline Buick GMC

    Check Availability
    Aurora, CO (48 mi)
    Quick view
  • Satin Steel Metallic 2021 GMC Sierra 1500 AT4Satin Steel Metallic 2021 GMC Sierra 1500 AT4Satin Steel Metallic 2021 GMC Sierra 1500 AT4Satin Steel Metallic 2021 GMC Sierra 1500 AT4Satin Steel Metallic 2021 GMC Sierra 1500 AT4Satin Steel Metallic 2021 GMC Sierra 1500 AT4

    $43,689

    $1.8K
    51,956 mi.
    Est. $763/mo

    Alpine Chevrolet

    4.5
    Check Availability
    Aurora, CO (45 mi)
    Quick view
  • Summit White 2022 GMC Sierra 1500 AT4Summit White 2022 GMC Sierra 1500 AT4Summit White 2022 GMC Sierra 1500 AT4Summit White 2022 GMC Sierra 1500 AT4Summit White 2022 GMC Sierra 1500 AT4Summit White 2022 GMC Sierra 1500 AT4

    $45,290

    $388
    59,090 mi.
    Est. $791/mo

    Alpine Chevrolet

    4.5
    Check Availability
    Aurora, CO (45 mi)
    Quick view
  • Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4

    $37,598

    $991
    98,506 mi.
    Est. $656/mo

    Alpine Chevrolet

    4.5
    Check Availability
    Aurora, CO (45 mi)
    Quick view
  • Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4

    $38,689

    $1.7K
    96,043 mi.
    Est. $675/mo

    Alpine Chevrolet

    4.5
    Check Availability
    Aurora, CO (45 mi)
    Quick view
  • Summit White 2025 GMC Sierra 1500 AT4Summit White 2025 GMC Sierra 1500 AT4Summit White 2025 GMC Sierra 1500 AT4Summit White 2025 GMC Sierra 1500 AT4Summit White 2025 GMC Sierra 1500 AT4Summit White 2025 GMC Sierra 1500 AT4

    $54,988

    46,316 mi.
    Est. $960/mo

    Johnson Auto Plaza

    3.4
    Check Availability
    Brighton, CO (31 mi)
    Quick view
  • Sterling Metallic 2024 GMC Sierra 1500 AT4Sterling Metallic 2024 GMC Sierra 1500 AT4Sterling Metallic 2024 GMC Sierra 1500 AT4Sterling Metallic 2024 GMC Sierra 1500 AT4Sterling Metallic 2024 GMC Sierra 1500 AT4Sterling Metallic 2024 GMC Sierra 1500 AT4

    $52,899

    $699
    48,369 mi.
    Est. $924/mo

    O'Meara GMC

    3.0
    Check Availability
    Thornton, CO (38 mi)
    Quick view
Skip to Listings
Best match Lowest price Highest price Lowest mileage Highest mileage Nearest location Best deal Newest year Oldest year Newest listed Oldest listed

GMC Sierra 1500 AT4 by city