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  • Sterling 2026 GMC Sierra 1500 AT4XSterling 2026 GMC Sierra 1500 AT4XSterling 2026 GMC Sierra 1500 AT4XSterling 2026 GMC Sierra 1500 AT4XSterling 2026 GMC Sierra 1500 AT4XSterling 2026 GMC Sierra 1500 AT4X

    $76,529

    Est. $1,412/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (28 mi)

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  • Dune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4X

    $79,156

    Est. $1,461/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (28 mi)
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  • Sterling 2026 GMC Sierra 1500 AT4XSterling 2026 GMC Sierra 1500 AT4XSterling 2026 GMC Sierra 1500 AT4XSterling 2026 GMC Sierra 1500 AT4XSterling 2026 GMC Sierra 1500 AT4XSterling 2026 GMC Sierra 1500 AT4X

    $72,413

    Est. $1,336/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (28 mi)
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  • Dune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4X

    $73,530

    Est. $1,357/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (28 mi)
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  • Dune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4X

    $70,995

    Est. $1,310/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (28 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4X

    $73,913

    Est. $1,364/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (28 mi)
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  • Summit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4X

    $73,268

    MSRP $85,485

    Est. $1,352/mo

    Sapaugh GM Country

    4.8
    Check Availability
    Herculaneum, MO (18 mi)
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  • Dune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4X

    $78,862

    Est. $1,455/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (28 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4X

    $73,706

    MSRP $85,980

    Est. $1,360/mo

    Sapaugh GM Country

    4.8
    Check Availability
    Herculaneum, MO (18 mi)
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  • Summit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4X

    $72,995

    Est. $1,347/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (28 mi)
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  • Dune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4X

    $79,995

    Est. $1,476/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (28 mi)
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  • Dune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4X

    $70,413

    Est. $1,299/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (28 mi)
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  • Dune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4X

    $77,995

    Est. $1,439/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (28 mi)
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  • Dune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4X

    $70,413

    Est. $1,299/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (28 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4X

    $68,851

    MSRP $82,890

    Est. $1,271/mo

    Dave Sinclair Buick GMC

    4.9
    Check Availability
    Saint Louis, MO (6 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4X

    $69,557

    MSRP $84,785

    Est. $1,284/mo

    Dave Sinclair Buick GMC

    4.9
    Check Availability
    Saint Louis, MO (6 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4X

    $71,646

    MSRP $83,685

    Est. $1,322/mo

    Sapaugh GM Country

    4.8
    Check Availability
    Herculaneum, MO (18 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4X

    $73,301

    MSRP $84,785

    Est. $1,353/mo

    Dave Sinclair Buick GMC

    4.9
    Check Availability
    Saint Louis, MO (6 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4X

    $76,529

    Est. $1,412/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (28 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4X

    $70,451

    MSRP $85,779

    Est. $1,300/mo

    Dave Sinclair Buick GMC

    4.9
    Check Availability
    Saint Louis, MO (6 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4X

    $75,591

    MSRP $86,690

    Est. $1,395/mo

    Suntrup Buick GMC

    3.9
    Check Availability
    Saint Peters, MO (22 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4X

    $70,413

    Est. $1,299/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (28 mi)
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  • Summit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4X

    $72,250

    MSRP $82,395

    Est. $1,333/mo

    Woody Buick GMC Naperville

    4.9
    Check Availability
    $299 delivery from Naperville, IL (256 mi)
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  • Summit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4XSummit White 2026 GMC Sierra 1500 AT4X

    $74,250

    MSRP $84,290

    Est. $1,370/mo

    Woody Buick GMC of Gurnee

    5.0
    Check Availability
    $448 delivery from Gurnee, IL (299 mi)
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About the 2026 GMC Sierra 1500 AT4X

Basics

AT4X shown.

Seating
5
Door count
4
Drivetrain
Four Wheel Drive
Combined MPG
19
Transmission
10-Speed A/T
Engine
420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel)
Side view of the 2026 GMC Sierra 1500 AT4X
FAQs

How much does the 2026 GMC Sierra 1500 AT4X cost?

The 2026 GMC Sierra 1500 AT4X price depends on optional features. Prices typically start at $79,600.

What is the MPG of the 2026 GMC Sierra 1500 AT4X?

The 2026 GMC Sierra 1500 AT4X offers up to 19 MPG in city driving and 20 MPG on the highway for a combined rating of 19 MPG.

These figures are based on EPA mileage ratings and are for comparison purposes only. The actual mileage will vary depending on the selected vehicle options, driving conditions, driving habits, vehicle maintenance, and other factors.

What are some similar vehicles and competitors of the 2026 GMC Sierra 1500 AT4X?

The 2026 GMC Sierra 1500 AT4X compares to and/or competes against the following vehicles:


Is the 2026 GMC Sierra 1500 AT4X reliable?

The 2026 GMC Sierra 1500 has an average reliability rating of 4.5 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2026 Sierra 1500 owners.

Ratings (4 reviews)

75% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.0
Interior
4.0
Performance
4.2
Value
3.5
Exterior
4.2
Reliability
4.5
Trims

AT4X (1 style)

Style
4WD Crew Cab 147" AT4X
Inventory price
Starting at $79,600
Combined MPG
19
Engine
420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel)
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2026 GMC Sierra 1500 AT4X by city

GMC Sierra 1500 trims