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  • Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4

    $80,234

    MSRP $80,835

    Est. $1,373/mo

    Vendetti Buick GMC

    4.9
    Check Availability
    Franklin, MA (29 mi)
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  • White 2026 GMC Sierra 2500 AT4White 2026 GMC Sierra 2500 AT4White 2026 GMC Sierra 2500 AT4White 2026 GMC Sierra 2500 AT4White 2026 GMC Sierra 2500 AT4White 2026 GMC Sierra 2500 AT4

    $89,128

    MSRP $89,030

    Est. $1,525/mo

    Robertsons GMC

    4.7
    Check Availability
    Wareham, MA (22 mi)
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  • Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4

    $91,104

    MSRP $91,705

    Est. $1,559/mo

    Tasca Buick GMC Woonsocket

    4.8
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    Woonsocket, RI (27 mi)
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  • Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4

    $88,694

    $399
    Est. $1,518/mo

    PAUL MASSE BUICK GMC SOUTH

    4.7
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    South Kingstown, RI (24 mi)
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  • Volcanic Red 2026 GMC Sierra 2500 AT4Volcanic Red 2026 GMC Sierra 2500 AT4Volcanic Red 2026 GMC Sierra 2500 AT4Volcanic Red 2026 GMC Sierra 2500 AT4Volcanic Red 2026 GMC Sierra 2500 AT4Volcanic Red 2026 GMC Sierra 2500 AT4

    $90,064

    MSRP $90,665

    Est. $1,541/mo

    Vendetti Buick GMC

    4.9
    Check Availability
    Franklin, MA (29 mi)
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  • Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4

    $75,335

    MSRP $77,640

    Est. $1,289/mo

    Mastria GMC Cadillac

    4.5
    Check Availability
    Raynham, MA (14 mi)
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  • Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4

    $78,870

    $2K

    MSRP $80,175

    Est. $1,350/mo

    Mastria GMC Cadillac

    4.5
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    Raynham, MA (14 mi)
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  • Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4

    $91,154

    $399
    Est. $1,560/mo

    PAUL MASSE BUICK GMC SOUTH

    4.7
    Check Availability
    South Kingstown, RI (24 mi)
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  • Dune 2026 GMC Sierra 2500 AT4Dune 2026 GMC Sierra 2500 AT4Dune 2026 GMC Sierra 2500 AT4Dune 2026 GMC Sierra 2500 AT4Dune 2026 GMC Sierra 2500 AT4Dune 2026 GMC Sierra 2500 AT4

    $89,210

    Est. $1,527/mo

    Marty's GMC

    4.7
    Check Availability
    Kingston, MA (27 mi)
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  • Gray 2026 GMC Sierra 2500 AT4

    $89,773

    MSRP $89,675

    Est. $1,536/mo

    Robertsons GMC

    4.7
    Check Availability
    Wareham, MA (22 mi)
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  • Titanium Rush Metallic 2026 GMC Sierra 2500 AT4

    $88,790

    Est. $1,519/mo

    Battles Buick GMC

    4.9
    Check Availability
    Bourne, MA (28 mi)
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  • Volcanic Red Tintcoat 2026 GMC Sierra 2500 AT4

    $89,799

    Est. $1,537/mo

    PAUL MASSE BUICK GMC SOUTH

    4.7
    Check Availability
    South Kingstown, RI (24 mi)
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  • Red 2026 GMC Sierra 2500 AT4

    $89,478

    MSRP $89,380

    Est. $1,531/mo

    Robertsons GMC

    4.7
    Check Availability
    Wareham, MA (22 mi)
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  • Summit White 2026 GMC Sierra 2500 AT4

    $88,714

    Est. $1,518/mo

    Marty's GMC

    4.7
    Check Availability
    Kingston, MA (27 mi)
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  • Onyx Black 2026 GMC Sierra 2500 AT4

    $90,749

    Est. $1,553/mo

    Marty's GMC

    4.7
    Check Availability
    Kingston, MA (27 mi)
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  • White 2026 GMC Sierra 2500 AT4

    $79,138

    MSRP $79,040

    Est. $1,354/mo

    Robertsons GMC

    4.7
    Check Availability
    Wareham, MA (22 mi)
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  • Black 2026 GMC Sierra 2500 AT4

    $89,328

    MSRP $89,230

    Est. $1,529/mo

    Robertsons GMC

    4.7
    Check Availability
    Wareham, MA (22 mi)
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  • Summit White 2026 GMC Sierra 2500 AT4

    $78,724

    Est. $1,347/mo

    Marty's GMC

    4.7
    Check Availability
    Kingston, MA (27 mi)
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  • Not Priced

    Marty's GMC

    4.7
    Check Availability
    Kingston, MA (27 mi)
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  • $79,615

    Est. $1,362/mo

    Marty's GMC

    4.7
    Check Availability
    Kingston, MA (27 mi)
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  • Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4

    $89,076

    Est. $1,524/mo

    Ewald Buick GMC of Menomonee Falls

    4.7
    Check Availability
    $652 delivery from Menomonee Falls, WI (870 mi)
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  • Onyx Black 2026 GMC Sierra 2500 AT4

    $85,154

    MSRP $86,855

    Est. $1,457/mo

    Ecodrive Chevrolet GMC of Gorham

    4.7
    Check Availability
    $368 delivery from Gorham, NH (186 mi)
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  • Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4

    $88,527

    MSRP $88,830

    Est. $1,515/mo

    Central GMC of Norwood

    4.9
    Check Availability
    Norwood, MA (34 mi)
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  • Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4

    $77,040

    MSRP $77,040

    Est. $1,318/mo

    Central GMC of Norwood

    4.9
    Check Availability
    Norwood, MA (34 mi)
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  • Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4

    $88,527

    $303

    MSRP $88,830

    Est. $1,515/mo

    Central GMC of Norwood

    4.9
    Check Availability
    Norwood, MA (34 mi)
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  • Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4

    $88,830

    MSRP $88,830

    Est. $1,520/mo

    Central GMC of Norwood

    4.9
    Check Availability
    Norwood, MA (34 mi)
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  • Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4

    $77,885

    MSRP $77,885

    Est. $1,333/mo

    Central GMC of Norwood

    4.9
    Check Availability
    Norwood, MA (34 mi)
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  • Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4

    $88,830

    MSRP $88,830

    Est. $1,520/mo

    Central GMC of Norwood

    4.9
    Check Availability
    Norwood, MA (34 mi)
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  • Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4

    $77,885

    MSRP $77,885

    Est. $1,333/mo

    Central GMC of Norwood

    4.9
    Check Availability
    Norwood, MA (34 mi)
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  • Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4

    $77,582

    MSRP $77,885

    Est. $1,328/mo

    Central GMC of Norwood

    4.9
    Check Availability
    Norwood, MA (34 mi)
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About the 2026 GMC Sierra 2500 AT4

Basics

AT4 shown.

Seating
5
Door count
4
Drivetrain
Four Wheel Drive
Combined MPG
0
Transmission
10-Speed A/T
Engine
470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)
Side view of the 2026 GMC Sierra 2500 AT4
FAQs

How much does the 2026 GMC Sierra 2500 AT4 cost?

The 2026 GMC Sierra 2500 AT4 price depends on optional features. Prices typically start at $72,200.

What are some similar vehicles and competitors of the 2026 GMC Sierra 2500 AT4?

The 2026 GMC Sierra 2500 AT4 compares to and/or competes against the following vehicles:


Trims

AT4 (2 styles)

Style
4WD Crew Cab 159" AT4 4WD Crew Cab 172" AT4
Inventory price
Starting at $72,200 Starting at $72,400
Combined MPG
0 0
Engine
470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)
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Best match Lowest price Highest price Lowest mileage Highest mileage Nearest location Best deal Newest year Oldest year Newest listed Oldest listed

2026 GMC Sierra 2500 AT4 by city

GMC Sierra 2500 trims