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  • Gray 2026 GMC Sierra 2500 AT4XGray 2026 GMC Sierra 2500 AT4XGray 2026 GMC Sierra 2500 AT4XGray 2026 GMC Sierra 2500 AT4XGray 2026 GMC Sierra 2500 AT4XGray 2026 GMC Sierra 2500 AT4X

    $98,462

    MSRP $100,260

    Est. $1,697/mo

    Weld County Garage GMC Hummer

    4.5
    Check Availability
    Greeley, CO (22 mi)

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  • Onyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4X

    $94,620

    Est. $1,631/mo

    O'Meara GMC

    3.0
    Check Availability
    Thornton, CO (17 mi)

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  • Summit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4X

    $87,255

    MSRP $89,255

    Est. $1,504/mo

    Loveland Buick GMC

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    Loveland, CO (23 mi)
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  • Sterling Metallic 2026 GMC Sierra 2500 AT4XSterling Metallic 2026 GMC Sierra 2500 AT4XSterling Metallic 2026 GMC Sierra 2500 AT4XSterling Metallic 2026 GMC Sierra 2500 AT4XSterling Metallic 2026 GMC Sierra 2500 AT4XSterling Metallic 2026 GMC Sierra 2500 AT4X

    $87,750

    MSRP $89,750

    Est. $1,512/mo

    Loveland Buick GMC

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    Loveland, CO (23 mi)
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  • Summit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4X

    $89,255

    MSRP $89,255

    Est. $1,538/mo

    Loveland Buick GMC

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    Loveland, CO (23 mi)
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  • Summit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4X

    $94,555

    Est. $1,629/mo

    Transwest GMC Denver

    4.8
    Check Availability
    Henderson, CO (17 mi)
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  • Coastal Dune 2026 GMC Sierra 2500 AT4XCoastal Dune 2026 GMC Sierra 2500 AT4XCoastal Dune 2026 GMC Sierra 2500 AT4XCoastal Dune 2026 GMC Sierra 2500 AT4XCoastal Dune 2026 GMC Sierra 2500 AT4XCoastal Dune 2026 GMC Sierra 2500 AT4X

    $97,995

    Est. $1,689/mo

    Transwest GMC Denver

    4.8
    Check Availability
    Henderson, CO (17 mi)
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  • Black 2026 GMC Sierra 2500 AT4XBlack 2026 GMC Sierra 2500 AT4XBlack 2026 GMC Sierra 2500 AT4XBlack 2026 GMC Sierra 2500 AT4XBlack 2026 GMC Sierra 2500 AT4XBlack 2026 GMC Sierra 2500 AT4X

    $97,557

    MSRP $99,290

    Est. $1,681/mo

    Weld County Garage GMC Hummer

    4.5
    Check Availability
    Greeley, CO (22 mi)
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  • Tan 2026 GMC Sierra 2500 AT4XTan 2026 GMC Sierra 2500 AT4XTan 2026 GMC Sierra 2500 AT4XTan 2026 GMC Sierra 2500 AT4XTan 2026 GMC Sierra 2500 AT4XTan 2026 GMC Sierra 2500 AT4X

    $98,462

    MSRP $100,260

    Est. $1,697/mo

    Weld County Garage GMC Hummer

    4.5
    Check Availability
    Greeley, CO (22 mi)
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  • Black 2026 GMC Sierra 2500 AT4XBlack 2026 GMC Sierra 2500 AT4XBlack 2026 GMC Sierra 2500 AT4XBlack 2026 GMC Sierra 2500 AT4XBlack 2026 GMC Sierra 2500 AT4XBlack 2026 GMC Sierra 2500 AT4X

    $100,524

    MSRP $99,925

    Est. $1,732/mo

    Weld County Garage GMC Hummer

    4.5
    Check Availability
    Greeley, CO (22 mi)
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  • Gray 2026 GMC Sierra 2500 AT4XGray 2026 GMC Sierra 2500 AT4XGray 2026 GMC Sierra 2500 AT4XGray 2026 GMC Sierra 2500 AT4XGray 2026 GMC Sierra 2500 AT4XGray 2026 GMC Sierra 2500 AT4X

    $97,557

    MSRP $99,290

    Est. $1,681/mo

    Weld County Garage GMC Hummer

    4.5
    Check Availability
    Greeley, CO (22 mi)
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  • Dune 2026 GMC Sierra 2500 AT4XDune 2026 GMC Sierra 2500 AT4XDune 2026 GMC Sierra 2500 AT4XDune 2026 GMC Sierra 2500 AT4XDune 2026 GMC Sierra 2500 AT4XDune 2026 GMC Sierra 2500 AT4X

    $104,898

    MSRP $108,965

    Est. $1,808/mo

    Johnson Auto Plaza

    3.4
    Check Availability
    Brighton, CO (13 mi)
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  • Onyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4X

    $104,574

    MSRP $108,615

    Est. $1,802/mo

    Johnson Auto Plaza

    3.4
    Check Availability
    Brighton, CO (13 mi)
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  • Onyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4X

    $99,225

    MSRP $99,225

    Est. $1,710/mo

    Loveland Buick GMC

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    Loveland, CO (23 mi)
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  • Volcanic Red Tintcoat 2026 GMC Sierra 2500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 2500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 2500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 2500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 2500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 2500 AT4X

    $97,605

    MSRP $99,605

    Est. $1,682/mo

    Loveland Buick GMC

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    Loveland, CO (23 mi)
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  • Volcanic Red Tintcoat 2026 GMC Sierra 2500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 2500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 2500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 2500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 2500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 2500 AT4X

    $99,375

    MSRP $99,375

    Est. $1,712/mo

    Loveland Buick GMC

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    Loveland, CO (23 mi)
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  • Summit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4X

    $99,662

    MSRP $106,420

    Est. $1,717/mo

    Johnson Auto Plaza

    3.4
    Check Availability
    Brighton, CO (13 mi)
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  • Onyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4X

    $97,645

    Est. $1,683/mo

    Transwest GMC Denver

    4.8
    Check Availability
    Henderson, CO (17 mi)
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  • Titanium Rush Metallic 2026 GMC Sierra 2500 AT4XTitanium Rush Metallic 2026 GMC Sierra 2500 AT4XTitanium Rush Metallic 2026 GMC Sierra 2500 AT4XTitanium Rush Metallic 2026 GMC Sierra 2500 AT4XTitanium Rush Metallic 2026 GMC Sierra 2500 AT4XTitanium Rush Metallic 2026 GMC Sierra 2500 AT4X

    $97,400

    $3K
    Est. $1,678/mo

    Transwest GMC Denver

    4.8
    Check Availability
    Henderson, CO (17 mi)
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  • Sterling Metallic 2026 GMC Sierra 2500 AT4XSterling Metallic 2026 GMC Sierra 2500 AT4XSterling Metallic 2026 GMC Sierra 2500 AT4XSterling Metallic 2026 GMC Sierra 2500 AT4XSterling Metallic 2026 GMC Sierra 2500 AT4XSterling Metallic 2026 GMC Sierra 2500 AT4X

    $97,645

    $3K
    Est. $1,683/mo

    Transwest GMC Denver

    4.8
    Check Availability
    Henderson, CO (17 mi)
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  • Coastal Dune 2026 GMC Sierra 2500 AT4X

    $97,645

    $3K
    Est. $1,683/mo

    Transwest GMC Denver

    4.8
    Check Availability
    Henderson, CO (17 mi)
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  • Onyx Black 2026 GMC Sierra 2500 AT4X

    $89,750

    MSRP $89,750

    Est. $1,547/mo

    Loveland Buick GMC

    Check Availability
    Loveland, CO (23 mi)
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  • $99,255

    MSRP $99,255

    Est. $1,710/mo

    Loveland Buick GMC

    Check Availability
    Loveland, CO (23 mi)
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  • Dune 2026 GMC Sierra 2500 AT4XDune 2026 GMC Sierra 2500 AT4XDune 2026 GMC Sierra 2500 AT4XDune 2026 GMC Sierra 2500 AT4XDune 2026 GMC Sierra 2500 AT4XDune 2026 GMC Sierra 2500 AT4X

    $82,963

    Est. $1,430/mo

    Laura Buick GMC

    4.5
    Check Availability
    $1,604 delivery from Collinsville, IL (802 mi)
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  • Dune 2026 GMC Sierra 2500 AT4XDune 2026 GMC Sierra 2500 AT4XDune 2026 GMC Sierra 2500 AT4XDune 2026 GMC Sierra 2500 AT4XDune 2026 GMC Sierra 2500 AT4XDune 2026 GMC Sierra 2500 AT4X

    $92,054

    Est. $1,586/mo

    Laura Buick GMC

    4.5
    Check Availability
    $1,604 delivery from Collinsville, IL (802 mi)
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  • Summit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4XSummit White 2026 GMC Sierra 2500 AT4X

    $93,909

    $6.1K
    Est. $1,618/mo

    Alpine Buick GMC

    4.4
    Check Availability
    Littleton, CO (35 mi)
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  • Sterling Metallic 2026 GMC Sierra 2500 AT4XSterling Metallic 2026 GMC Sierra 2500 AT4XSterling Metallic 2026 GMC Sierra 2500 AT4XSterling Metallic 2026 GMC Sierra 2500 AT4XSterling Metallic 2026 GMC Sierra 2500 AT4XSterling Metallic 2026 GMC Sierra 2500 AT4X

    $99,928

    MSRP $99,129

    Est. $1,722/mo

    AutoNation Buick GMC Park Meadows

    4.5
    Check Availability
    Lone Tree, CO (38 mi)
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  • Coastal Dune 2026 GMC Sierra 2500 AT4XCoastal Dune 2026 GMC Sierra 2500 AT4XCoastal Dune 2026 GMC Sierra 2500 AT4XCoastal Dune 2026 GMC Sierra 2500 AT4XCoastal Dune 2026 GMC Sierra 2500 AT4XCoastal Dune 2026 GMC Sierra 2500 AT4X

    $104,795

    MSRP $107,870

    Est. $1,806/mo

    AutoNation Buick GMC Park Meadows

    4.5
    Check Availability
    Lone Tree, CO (38 mi)
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  • Volcanic Red Tintcoat 2026 GMC Sierra 2500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 2500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 2500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 2500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 2500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 2500 AT4X

    $94,856

    $6.2K
    Est. $1,635/mo

    Alpine Buick GMC

    4.4
    Check Availability
    Littleton, CO (35 mi)
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  • Onyx Black 2026 GMC Sierra 2500 AT4X

    $85,994

    15,649 mi.
    Est. $1,482/mo

    Springs Automotive Group

    4.7
    Check Availability
    Inglewood, CO (34 mi)
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  • Sterling 2026 GMC Sierra 2500 AT4X

    $90,991

    3,049 mi.
    Est. $1,568/mo

    Bozarth Chevrolet #1 Park Meadows

    4.9
    Check Availability
    Lone Tree, CO (39 mi)
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About the 2026 GMC Sierra 2500 AT4X

Basics

AT4X 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 AT4X
FAQs

How much does the 2026 GMC Sierra 2500 AT4X cost?

The 2026 GMC Sierra 2500 AT4X price depends on optional features. Prices typically start at $85,200.

What are some similar vehicles and competitors of the 2026 GMC Sierra 2500 AT4X?

The 2026 GMC Sierra 2500 AT4X compares to and/or competes against the following vehicles:


Trims

AT4X (1 style)

Style
4WD Crew Cab 159" AT4X
Inventory price
Starting at $85,200
Combined MPG
0
Engine
470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)
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2026 GMC Sierra 2500 AT4X by city

GMC Sierra 2500 trims