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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

    $80,000

    MSRP $89,385

    Est. $1,483/mo

    Woody Buick GMC Naperville

    4.9
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    Naperville, IL (15 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

    $100,194

    MSRP $101,194

    Est. $1,858/mo

    Arlington Heights Buick GMC

    4.9
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    Arlington heights, IL (16 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

    $90,254

    MSRP $99,819

    Est. $1,673/mo

    Castle Chevrolet GMC

    4.3
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    McHenry, IL (24 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

    $89,254

    MSRP $99,919

    Est. $1,655/mo

    Castle Buick GMC

    3.7
    Check Availability
    McHenry, IL (26 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

    $81,000

    MSRP $89,385

    Est. $1,502/mo

    Woody Buick GMC Naperville

    4.9
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    Naperville, IL (15 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

    $83,000

    MSRP $88,490

    Est. $1,539/mo

    Bill Kay Buick GMC

    4.4
    Check Availability
    Downers Grove, IL (15 mi)
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  • Onyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4X

    $81,000

    MSRP $89,385

    Est. $1,502/mo

    Woody Buick GMC Naperville

    4.9
    Check Availability
    Naperville, IL (15 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

    $79,500

    MSRP $89,385

    Est. $1,474/mo

    Woody Buick GMC Naperville

    4.9
    Check Availability
    Naperville, IL (15 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

    $80,000

    MSRP $89,385

    Est. $1,483/mo

    Woody Buick GMC Naperville

    4.9
    Check Availability
    Naperville, IL (15 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

    $80,000

    MSRP $89,385

    Est. $1,483/mo

    Woody Buick GMC Naperville

    4.9
    Check Availability
    Naperville, IL (15 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

    $79,500

    MSRP $89,385

    Est. $1,474/mo

    Woody Buick GMC Naperville

    4.9
    Check Availability
    Naperville, IL (15 mi)
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  • Sterling Metallic 2026 GMC Sierra 2500 AT4XSterling Metallic 2026 GMC Sierra 2500 AT4X

    $81,000

    MSRP $89,385

    Est. $1,502/mo

    Woody Buick GMC Naperville

    4.9
    Check Availability
    Naperville, IL (15 mi)
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  • Volcanic Red Tintcoat 2026 GMC Sierra 2500 AT4X

    $98,375

    MSRP $99,375

    Est. $1,824/mo

    Woody Buick GMC Naperville

    4.9
    Check Availability
    Naperville, IL (15 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

    $81,000

    MSRP $89,385

    Est. $1,502/mo

    Woody Buick GMC Naperville

    4.9
    Check Availability
    Naperville, IL (15 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

    $81,000

    MSRP $89,385

    Est. $1,502/mo

    Woody Buick GMC Naperville

    4.9
    Check Availability
    Naperville, IL (15 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

    $89,942

    MSRP $99,474

    Est. $1,668/mo

    Castle Chevrolet GMC

    4.3
    Check Availability
    McHenry, IL (24 mi)
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  • Onyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4X

    $90,000

    MSRP $99,225

    Est. $1,669/mo

    Woody Buick GMC Naperville

    4.9
    Check Availability
    Naperville, IL (15 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

    $79,500

    MSRP $89,385

    Est. $1,474/mo

    Woody Buick GMC Naperville

    4.9
    Check Availability
    Naperville, IL (15 mi)
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  • Sterling Metallic 2026 GMC Sierra 2500 AT4X

    $90,265

    Est. $1,674/mo

    Fox Valley Buick GMC

    4.4
    Check Availability
    St Charles, IL (7 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

    $80,000

    MSRP $89,385

    Est. $1,483/mo

    Woody Buick GMC Naperville

    4.9
    Check Availability
    Naperville, IL (15 mi)

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  • Onyx Black 2026 GMC Sierra 2500 AT4X

    Not Priced

    Est. $0/mo

    Napleton's Schaumburg Buick GMC

    4.1
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    Schaumburg, IL (9 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

    $81,000

    MSRP $89,385

    Est. $1,502/mo

    Woody Buick GMC of Gurnee

    5.0
    Check Availability
    $299 delivery from Gurnee, IL (31 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

    $81,000

    MSRP $89,385

    Est. $1,502/mo

    Woody Buick GMC of Gurnee

    5.0
    Check Availability
    $299 delivery from Gurnee, IL (31 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

    $86,998

    1,345 mi.
    Est. $1,613/mo

    Kenosha Toyota

    3.2
    Check Availability
    Kenosha, WI (43 mi)
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  • Volcanic Red Tintcoat 2026 GMC Sierra 2500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 2500 AT4X

    $90,000

    MSRP $99,375

    Est. $1,669/mo

    Woody Buick GMC of Gurnee

    5.0
    Check Availability
    Gurnee, IL (31 mi)
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  • Coastal Dune 2026 GMC Sierra 2500 AT4XCoastal Dune 2026 GMC Sierra 2500 AT4X

    $81,000

    MSRP $89,385

    Est. $1,502/mo

    Woody Buick GMC of Gurnee

    5.0
    Check Availability
    Gurnee, IL (31 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

    $90,000

    MSRP $99,225

    Est. $1,669/mo

    Woody Buick GMC of Gurnee

    5.0
    Check Availability
    Gurnee, IL (31 mi)
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  • Onyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4X

    $81,000

    MSRP $89,385

    Est. $1,502/mo

    Woody Buick GMC of Gurnee

    5.0
    Check Availability
    Gurnee, IL (31 mi)
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  • Volcanic Red Tintcoat 2026 GMC Sierra 2500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 2500 AT4X

    $81,000

    MSRP $89,535

    Est. $1,502/mo

    Woody Buick GMC of Gurnee

    5.0
    Check Availability
    Gurnee, IL (31 mi)
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  • Onyx Black 2026 GMC Sierra 2500 AT4XOnyx Black 2026 GMC Sierra 2500 AT4X

    $88,185

    Est. $1,635/mo

    Arnie Bauer Buick GMC of Matteson

    4.4
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    Matteson, IL (41 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

    $81,000

    MSRP $89,385

    Est. $1,502/mo

    Woody Buick GMC of Gurnee

    5.0
    Check Availability
    Gurnee, IL (31 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

    $90,000

    MSRP $99,225

    Est. $1,669/mo

    Woody Buick GMC of Gurnee

    5.0
    Check Availability
    Gurnee, IL (31 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

    $81,000

    MSRP $89,385

    Est. $1,502/mo

    Woody Buick GMC of Gurnee

    5.0
    Check Availability
    Gurnee, IL (31 mi)
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  • Sterling Metallic 2026 GMC Sierra 2500 AT4XSterling Metallic 2026 GMC Sierra 2500 AT4X

    $81,000

    MSRP $89,385

    Est. $1,502/mo

    Woody Buick GMC of Gurnee

    5.0
    Check Availability
    Gurnee, IL (31 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

    $89,000

    MSRP $98,730

    Est. $1,650/mo

    Woody Buick GMC of Gurnee

    5.0
    Check Availability
    Gurnee, IL (31 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