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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

    $96,899

    MSRP $100,090

    Est. $1,750/mo

    Weld County Garage GMC Hummer

    4.6
    Greeley, CO (25 mi)
    Check Availability

  • Red 2026 GMC Sierra 2500 AT4XRed 2026 GMC Sierra 2500 AT4XRed 2026 GMC Sierra 2500 AT4XRed 2026 GMC Sierra 2500 AT4XRed 2026 GMC Sierra 2500 AT4XRed 2026 GMC Sierra 2500 AT4X

    $93,423

    MSRP $100,410

    Est. $1,687/mo

    Weld County Garage GMC Hummer

    4.6
    Greeley, CO (25 mi)
    Check Availability

  • 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

    $92,986

    MSRP $99,925

    Est. $1,679/mo

    Weld County Garage GMC Hummer

    4.6
    Greeley, CO (25 mi)
    Check Availability

  • 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

    $93,350

    $7K
    Est. $1,685/mo

    Transwest GMC Denver

    4.8
    Henderson, CO (14 mi)
    Check Availability
  • 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

    $97,284

    $2.2K

    MSRP $98,675

    Est. $1,756/mo

    Shortline Buick GMC

    Aurora, CO (27 mi)
    Check Availability
  • 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

    $95,455

    $2K

    MSRP $99,455

    Est. $1,723/mo

    Loveland Buick GMC

    Loveland, CO (26 mi)
    Check Availability
  • 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

    $101,184

    MSRP $99,990

    Est. $1,827/mo

    Weld County Garage GMC Hummer

    4.6
    Greeley, CO (25 mi)
    Check Availability
  • 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

    $98,999

    Est. $1,787/mo

    AutoNation Buick GMC West

    4.1
    Golden, CO (27 mi)
    Check Availability
  • 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

    $96,899

    MSRP $100,090

    Est. $1,750/mo

    Weld County Garage GMC Hummer

    4.6
    Greeley, CO (25 mi)
    Check Availability

  • 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

    $92,645

    $5K
    Est. $1,673/mo

    Transwest GMC Denver

    4.8
    Henderson, CO (14 mi)
    Check Availability
  • 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

    $87,375

    $2K

    MSRP $99,375

    Est. $1,578/mo

    Loveland Buick GMC

    Loveland, CO (26 mi)
    Check Availability
  • 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

    $92,645

    $5K
    Est. $1,673/mo

    Transwest GMC Denver

    4.8
    Henderson, CO (14 mi)
    Check Availability
  • 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

    $91,295

    $3.5K
    Est. $1,648/mo

    Transwest GMC Denver

    4.8
    Henderson, CO (14 mi)
    Check Availability
  • 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

    $97,795

    Est. $1,766/mo

    Transwest GMC Denver

    4.8
    Henderson, CO (14 mi)
    Check Availability
  • 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

    $96,599

    MSRP $99,290

    Est. $1,744/mo

    Weld County Garage GMC Hummer

    4.6
    Greeley, CO (25 mi)
    Check Availability

  • 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

    $97,645

    Est. $1,763/mo

    Transwest GMC Denver

    4.8
    Henderson, CO (14 mi)
    Check Availability
  • 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

    $92,905

    $4K
    Est. $1,677/mo

    Transwest GMC Denver

    4.8
    Henderson, CO (14 mi)
    Check Availability
  • 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

    $95,455

    $2K

    MSRP $99,455

    Est. $1,723/mo

    Loveland Buick GMC

    Loveland, CO (26 mi)
    Check Availability
  • 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

    $97,855

    $2K
    Est. $1,767/mo

    Transwest GMC Denver

    4.8
    Henderson, CO (14 mi)
    Check Availability
  • Sterling 2026 GMC Sierra 2500 AT4XSterling 2026 GMC Sierra 2500 AT4XSterling 2026 GMC Sierra 2500 AT4XSterling 2026 GMC Sierra 2500 AT4XSterling 2026 GMC Sierra 2500 AT4XSterling 2026 GMC Sierra 2500 AT4X

    $101,236

    $2K

    MSRP $109,145

    Est. $1,828/mo

    Johnson Auto Plaza

    3.5
    Brighton, CO (11 mi)
    Check Availability
  • 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

    $101,184

    MSRP $99,990

    Est. $1,827/mo

    Weld County Garage GMC Hummer

    4.6
    Greeley, CO (25 mi)
    Check Availability

  • Volcanic Red 2026 GMC Sierra 2500 AT4XVolcanic Red 2026 GMC Sierra 2500 AT4XVolcanic Red 2026 GMC Sierra 2500 AT4XVolcanic Red 2026 GMC Sierra 2500 AT4XVolcanic Red 2026 GMC Sierra 2500 AT4XVolcanic Red 2026 GMC Sierra 2500 AT4X

    $88,769

    $2.4K

    MSRP $99,175

    Est. $1,603/mo

    Johnson Auto Plaza

    3.5
    Brighton, CO (11 mi)
    Check Availability
  • Sterling 2026 GMC Sierra 2500 AT4XSterling 2026 GMC Sierra 2500 AT4XSterling 2026 GMC Sierra 2500 AT4XSterling 2026 GMC Sierra 2500 AT4XSterling 2026 GMC Sierra 2500 AT4XSterling 2026 GMC Sierra 2500 AT4X

    $81,488

    19,187 mi.
    Est. $1,471/mo

    Johnson Auto Plaza

    3.5
    Brighton, CO (11 mi)
    Check Availability
  • Sterling Metallic 2026 GMC Sierra 2500 AT4X

    $100,350

    Est. $1,812/mo

    Transwest GMC Denver

    4.8
    Henderson, CO (14 mi)
    Check Availability
  • Sterling Metallic 2026 GMC Sierra 2500 AT4X

    $100,350

    Est. $1,812/mo

    Transwest GMC Denver

    4.8
    Henderson, CO (14 mi)
    Check Availability
  • Coastal Dune 2026 GMC Sierra 2500 AT4X

    $100,350

    Est. $1,812/mo

    Transwest GMC Denver

    4.8
    Henderson, CO (14 mi)
    Check Availability
  • 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

    $83,184

    MSRP $98,905

    Est. $1,502/mo

    VanGuard GMC

    4.7
    $958 delivery from Sherman, TX (639 mi)
    Check Availability
  • 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

    $83,610

    MSRP $99,400

    Est. $1,510/mo

    VanGuard GMC

    4.7
    $958 delivery from Sherman, TX (639 mi)
    Check Availability

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 $85,500.

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 $85,500
Combined MPG
0
Engine
470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)

2026 GMC Sierra 2500 AT4X by city

2026 GMC Sierra 2500 trims