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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

    $86,718

    $2K
    Est. $1,572/mo

    Gates GMC Nissan

    5.0
    North Windham, CT (20 mi)
    Check Availability
  • 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

    $77,199

    2,052 mi.
    Est. $1,400/mo

    Tasca Buick GMC Woonsocket

    4.8
    Woonsocket, RI (21 mi)
    Check Availability
  • Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4

    $75,532

    MSRP $80,679

    Est. $1,370/mo

    Hurd Auto Mall

    4.6
    Johnston, RI (18 mi)
    Check Availability
  • 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

    $77,387

    MSRP $82,674

    Est. $1,403/mo

    Hurd Auto Mall

    4.6
    Johnston, RI (18 mi)
    Check Availability
  • 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

    $76,602

    MSRP $81,829

    Est. $1,389/mo

    Hurd Auto Mall

    4.6
    Johnston, RI (18 mi)
    Check Availability
  • 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

    $86,718

    $2K
    Est. $1,572/mo

    Gates GMC Nissan

    5.0
    North Windham, CT (20 mi)
    Check Availability
  • 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

    $75,532

    MSRP $80,679

    Est. $1,370/mo

    Hurd Auto Mall

    4.6
    Johnston, RI (18 mi)
    Check Availability
  • 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

    $75,672

    MSRP $80,829

    Est. $1,372/mo

    Hurd Auto Mall

    4.6
    Johnston, RI (18 mi)
    Check Availability
  • 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

    $86,223

    $2K
    Est. $1,563/mo

    Gates GMC Nissan

    5.0
    North Windham, CT (20 mi)
    Check Availability
  • 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

    $75,072

    MSRP $80,184

    Est. $1,361/mo

    Hurd Auto Mall

    4.6
    Johnston, RI (18 mi)
    Check Availability
  • 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

    $81,248

    MSRP $91,664

    Est. $1,473/mo

    Hurd Auto Mall

    4.6
    Johnston, RI (18 mi)
    Check Availability
  • Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4

    $81,248

    MSRP $91,664

    Est. $1,473/mo

    Hurd Auto Mall

    4.6
    Johnston, RI (18 mi)
    Check Availability
  • 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

    $77,918

    Est. $1,413/mo

    Gates GMC Nissan

    5.0
    North Windham, CT (20 mi)
    Check Availability
  • 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

    $88,528

    Est. $1,605/mo

    Gates GMC Nissan

    5.0
    North Windham, CT (20 mi)
    Check Availability
  • 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

    $70,467

    20,710 mi.
    Est. $1,278/mo

    Imperial Chevrolet

    4.4
    Mendon, MA (23 mi)
    Check Availability
  • Sterling Metallic 2026 GMC Sierra 2500 AT4

    $80,334

    MSRP $79,835

    Est. $1,457/mo

    Butler GMC

    4.9
    Charlton, MA (22 mi)
    Check Availability
  • Titanium Rush Metallic 2026 GMC Sierra 2500 AT4

    $78,538

    Est. $1,424/mo

    Gates GMC Nissan

    5.0
    North Windham, CT (20 mi)
    Check Availability
  • Titanium Rush Metallic 2026 GMC Sierra 2500 AT4

    $80,683

    Est. $1,463/mo

    Gates GMC Nissan

    5.0
    North Windham, CT (20 mi)
    Check Availability
  • Onyx Black 2026 GMC Sierra 2500 AT4

    $88,873

    Est. $1,611/mo

    Gates GMC Nissan

    5.0
    North Windham, CT (20 mi)
    Check Availability
  • Sterling Metallic 2026 GMC Sierra 2500 AT4

    $90,023

    Est. $1,632/mo

    Gates GMC Nissan

    5.0
    North Windham, CT (20 mi)
    Check Availability
  • 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

    $74,754

    Est. $1,355/mo

    Leesburg Buick GMC

    4.5
    $532 delivery from Leesburg, VA (355 mi)
    Check Availability
  • 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

    $78,530

    MSRP $78,035

    Est. $1,424/mo

    Coleman Buick GMC

    4.5
    $599 delivery from Lawrenceville, NJ (184 mi)
    Check Availability
  • Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4

    $73,361

    $1.7K
    2,261 mi.
    Est. $1,330/mo

    Colonial Honda of Dartmouth

    4.9
    North Dartmouth, MA (48 mi)
    Check Availability
  • 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

    $87,488

    MSRP $91,060

    Est. $1,586/mo

    Scranton GMC of Vernon

    4.5
    Vernon, CT (33 mi)
    Check Availability
  • 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

    $75,035

    MSRP $77,340

    Est. $1,361/mo

    Mastria GMC Cadillac

    4.5
    Raynham, MA (44 mi)
    Check Availability
  • 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

    $75,035

    MSRP $77,340

    Est. $1,361/mo

    Mastria GMC Cadillac

    4.5
    Raynham, MA (44 mi)
    Check Availability
  • 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

    $74,540

    MSRP $76,845

    Est. $1,352/mo

    Mastria GMC Cadillac

    4.5
    Raynham, MA (44 mi)
    Check Availability
  • 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

    $80,948

    MSRP $80,020

    Est. $1,468/mo

    Scranton GMC of Vernon

    4.5
    Vernon, CT (33 mi)
    Check Availability
  • 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

    $75,035

    MSRP $77,340

    Est. $1,361/mo

    Mastria GMC Cadillac

    4.5
    Raynham, MA (44 mi)
    Check Availability
  • 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

    $78,464

    Est. $1,423/mo

    PAUL MASSE BUICK GMC SOUTH

    4.6
    South Kingstown, RI (32 mi)
    Check Availability
  • 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

    $80,608

    MSRP $79,680

    Est. $1,462/mo

    Scranton GMC of Vernon

    4.5
    Vernon, CT (33 mi)
    Check Availability
  • 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

    $86,638

    MSRP $90,210

    Est. $1,571/mo

    Scranton GMC of Vernon

    4.5
    Vernon, CT (33 mi)
    Check Availability
  • 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

    $82,180

    MSRP $90,085

    Est. $1,490/mo

    McGovern GMC of Westborough

    4.7
    Westborough, MA (32 mi)
    Check Availability
  • 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

    $80,948

    MSRP $80,020

    Est. $1,468/mo

    Scranton GMC of Vernon

    4.5
    Vernon, CT (33 mi)
    Check Availability

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 $72,500.

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 $72,500 Starting at $72,700
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)

2026 GMC Sierra 2500 AT4 by city