Skip to main content
Best match Lowest price Highest price Lowest mileage Highest mileage Nearest location Best deal Newest year Oldest year Newest listed Oldest listed
Skip to Filters
  • 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

    $90,677

    $1K
    Est. $1,681/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (30 mi)

    Quick view
  • 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

    $93,453

    MSRP $99,400

    Est. $1,733/mo

    Sapaugh GM Country

    4.8
    Check Availability
    Herculaneum, MO (26 mi)
    Quick view
  • 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

    $83,428

    $1.3K
    2,469 mi.
    Est. $1,547/mo

    Bommarito Toyota

    4.4
    Check Availability
    Hazelwood, MO (17 mi)
    Quick view
  • 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

    $93,453

    MSRP $99,400

    Est. $1,733/mo

    Sapaugh GM Country

    4.8
    Check Availability
    Herculaneum, MO (26 mi)
    Quick view
  • 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

    $89,602

    MSRP $98,480

    Est. $1,661/mo

    Dave Sinclair Buick GMC

    4.9
    Check Availability
    Saint Louis, MO (12 mi)
    Quick view
  • 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

    $85,677

    2,190 mi.
    Est. $1,588/mo

    Dave Sinclair Buick GMC

    4.9
    Check Availability
    Saint Louis, MO (12 mi)
    Quick view
  • 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

    $90,103

    MSRP $99,025

    Est. $1,670/mo

    Dave Sinclair Buick GMC

    4.9
    Check Availability
    Saint Louis, MO (12 mi)
    Quick view
  • 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

    $89,648

    MSRP $98,530

    Est. $1,662/mo

    Dave Sinclair Buick GMC

    4.9
    Check Availability
    Saint Louis, MO (12 mi)
    Quick view
  • 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

    $90,532

    MSRP $96,285

    Est. $1,678/mo

    Sapaugh GM Country

    4.8
    Check Availability
    Herculaneum, MO (26 mi)
    Quick view
  • 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

    $93,462

    MSRP $98,905

    Est. $1,733/mo

    Sapaugh GM Country

    4.8
    Check Availability
    Herculaneum, MO (26 mi)
    Quick view
  • 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

    $81,586

    $1K
    Est. $1,513/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (30 mi)
    Quick view
  • 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

    $90,532

    MSRP $96,285

    Est. $1,678/mo

    Sapaugh GM Country

    4.8
    Check Availability
    Herculaneum, MO (26 mi)
    Quick view
  • 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

    $91,294

    $1K
    Est. $1,692/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (30 mi)
    Quick view
  • 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

    $90,677

    $1K
    Est. $1,681/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (30 mi)
    Quick view
  • 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

    $90,677

    $1K
    Est. $1,681/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (30 mi)
    Quick view
  • 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

    $90,677

    $1K
    Est. $1,681/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (30 mi)
    Quick view
  • 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

    $99,269

    $1K
    Est. $1,840/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (30 mi)
    Quick view
  • 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

    $90,988

    MSRP $96,780

    Est. $1,687/mo

    Sapaugh GM Country

    4.8
    Check Availability
    Herculaneum, MO (26 mi)
    Quick view
  • 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

    $99,269

    $2K
    Est. $1,840/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (30 mi)
    Quick view
  • 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

    $93,677

    $1K
    Est. $1,737/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (30 mi)
    Quick view
  • 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

    $90,677

    $1K
    Est. $1,681/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (30 mi)
    Quick view
  • 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

    $90,677

    $1K
    Est. $1,681/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (30 mi)
    Quick view
  • 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
    $299 delivery from Naperville, IL (252 mi)
    Quick view
  • 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
    $299 delivery from Naperville, IL (252 mi)
    Quick view

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)
Skip to Listings
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 AT4X by city

GMC Sierra 2500 trims