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  • Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4

    $84,575

    MSRP $93,575

    Est. $1,543/mo

    Pine Belt Chevrolet of Collins

    4.9
    Check Availability
    Collins, MS (26 mi)
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  • TAN 2026 GMC Sierra 2500 AT4TAN 2026 GMC Sierra 2500 AT4TAN 2026 GMC Sierra 2500 AT4TAN 2026 GMC Sierra 2500 AT4TAN 2026 GMC Sierra 2500 AT4TAN 2026 GMC Sierra 2500 AT4

    $82,910

    MSRP $93,575

    Est. $1,512/mo

    Legacy GMC of Laurel

    4.7
    Check Availability
    Laurel, MS (3 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

    $84,775

    $6.9K

    MSRP $93,575

    Est. $1,546/mo

    Pine Belt Chevrolet of Collins

    4.9
    Check Availability
    Collins, MS (26 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

    $84,080

    MSRP $93,080

    Est. $1,534/mo

    Pine Belt Chevrolet of Collins

    4.9
    Check Availability
    Collins, MS (26 mi)
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  • SILVER 2026 GMC Sierra 2500 AT4SILVER 2026 GMC Sierra 2500 AT4SILVER 2026 GMC Sierra 2500 AT4SILVER 2026 GMC Sierra 2500 AT4SILVER 2026 GMC Sierra 2500 AT4SILVER 2026 GMC Sierra 2500 AT4

    $82,910

    MSRP $93,575

    Est. $1,512/mo

    Legacy GMC of Laurel

    4.7
    Check Availability
    Laurel, MS (3 mi)
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  • BLACK 2026 GMC Sierra 2500 AT4BLACK 2026 GMC Sierra 2500 AT4BLACK 2026 GMC Sierra 2500 AT4BLACK 2026 GMC Sierra 2500 AT4BLACK 2026 GMC Sierra 2500 AT4BLACK 2026 GMC Sierra 2500 AT4

    $82,910

    MSRP $93,575

    Est. $1,512/mo

    Legacy GMC of Laurel

    4.7
    Check Availability
    Laurel, MS (3 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

    $82,415

    MSRP $93,080

    Est. $1,503/mo

    Legacy GMC of Laurel

    4.7
    Check Availability
    Laurel, MS (3 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

    $82,415

    MSRP $93,080

    Est. $1,503/mo

    Legacy GMC of Laurel

    4.7
    Check Availability
    Laurel, MS (3 mi)
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  • TAN 2026 GMC Sierra 2500 AT4TAN 2026 GMC Sierra 2500 AT4TAN 2026 GMC Sierra 2500 AT4TAN 2026 GMC Sierra 2500 AT4TAN 2026 GMC Sierra 2500 AT4TAN 2026 GMC Sierra 2500 AT4

    $82,910

    MSRP $93,575

    Est. $1,512/mo

    Legacy GMC of Laurel

    4.7
    Check Availability
    Laurel, MS (3 mi)
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  • BLACK 2026 GMC Sierra 2500 AT4BLACK 2026 GMC Sierra 2500 AT4BLACK 2026 GMC Sierra 2500 AT4

    $81,415

    MSRP $92,080

    Est. $1,485/mo

    Legacy GMC of Laurel

    4.7
    Check Availability
    Laurel, MS (3 mi)
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  • GAZ 2026 GMC Sierra 2500 AT4GAZ 2026 GMC Sierra 2500 AT4GAZ 2026 GMC Sierra 2500 AT4GAZ 2026 GMC Sierra 2500 AT4GAZ 2026 GMC Sierra 2500 AT4GAZ 2026 GMC Sierra 2500 AT4

    $93,585

    MSRP $91,585

    Est. $1,707/mo

    Pine Belt Chevrolet of Collins

    4.9
    Check Availability
    Collins, MS (26 mi)
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  • Sterling Metallic 2026 GMC Sierra 2500 AT4

    $93,080

    MSRP $92,080

    Est. $1,698/mo

    Pine Belt GMC of Collins

    Check Availability
    Collins, MS (26 mi)
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  • $91,545

    MSRP $91,545

    Est. $1,670/mo

    Pine Belt GMC of Collins

    Check Availability
    Collins, MS (26 mi)
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  • $83,080

    MSRP $92,080

    Est. $1,516/mo

    Pine Belt GMC of Collins

    Check Availability
    Collins, MS (26 mi)
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  • $83,080

    MSRP $92,080

    Est. $1,516/mo

    Pine Belt GMC of Collins

    Check Availability
    Collins, MS (26 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

    $69,316

    Est. $1,264/mo

    Laura Buick GMC

    4.5
    Check Availability
    $972 delivery from Collinsville, IL (486 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

    $73,416

    Est. $1,339/mo

    Laura Buick GMC

    4.5
    Check Availability
    $972 delivery from Collinsville, IL (486 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

    $84,642

    MSRP $91,715

    Est. $1,544/mo

    Walt Massey Chevrolet GMC Columbia

    4.7
    Check Availability
    Columbia, MS (49 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

    $84,196

    MSRP $91,220

    Est. $1,536/mo

    Walt Massey Chevrolet GMC Columbia

    4.7
    Check Availability
    Columbia, MS (49 mi)
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  • Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4

    $84,583

    MSRP $91,650

    Est. $1,543/mo

    Walt Massey Chevrolet GMC Columbia

    4.7
    Check Availability
    Columbia, MS (49 mi)
    Quick view
  • Sterling Metallic 2026 GMC Sierra 2500 AT4

    $84,583

    MSRP $91,650

    Est. $1,543/mo

    Walt Massey Chevrolet GMC Columbia

    4.7
    Check Availability
    Columbia, MS (49 mi)
    Quick view

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