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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

    $72,727

    $1K
    Est. $1,342/mo

    Ewing Buick GMC

    4.6
    Check Availability
    Plano, TX (13 mi)

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  • Volcanic Red 2026 GMC Sierra 1500 AT4XVolcanic Red 2026 GMC Sierra 1500 AT4XVolcanic Red 2026 GMC Sierra 1500 AT4XVolcanic Red 2026 GMC Sierra 1500 AT4XVolcanic Red 2026 GMC Sierra 1500 AT4XVolcanic Red 2026 GMC Sierra 1500 AT4X

    $71,982

    $2.4K
    Est. $1,328/mo

    Ewing Buick GMC

    4.6
    Check Availability
    Plano, TX (13 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

    $74,998

    $1K

    MSRP $84,385

    Est. $1,384/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (18 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

    $77,041

    $1K

    MSRP $90,195

    Est. $1,422/mo

    McKinney Buick GMC

    4.1
    Check Availability
    McKinney, TX (10 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

    $72,331

    $1K

    MSRP $85,485

    Est. $1,335/mo

    McKinney Buick GMC

    4.1
    Check Availability
    McKinney, TX (10 mi)
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  • Coastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4X

    $72,826

    $3.2K

    MSRP $85,980

    Est. $1,344/mo

    McKinney Buick GMC

    4.1
    Check Availability
    McKinney, TX (10 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

    $75,774

    1,110 mi.
    Est. $1,398/mo

    Classic Chevrolet

    3.8
    Check Availability
    Grapevine, TX (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

    $71,832

    $153
    Est. $1,326/mo

    Ewing Buick GMC

    4.6
    Check Availability
    Plano, TX (13 mi)

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  • Coastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4X

    $73,549

    539 mi.
    Est. $1,357/mo

    Group 1 Ford of Rockwall

    4.8
    Check Availability
    Rockwall, TX (13 mi)
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  • Volcanic Red Tintcoat 2026 GMC Sierra 1500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 1500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 1500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 1500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 1500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 1500 AT4X

    $77,191

    $1K

    MSRP $90,345

    Est. $1,425/mo

    McKinney Buick GMC

    4.1
    Check Availability
    McKinney, TX (10 mi)
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  • Volcanic Red 2026 GMC Sierra 1500 AT4XVolcanic Red 2026 GMC Sierra 1500 AT4XVolcanic Red 2026 GMC Sierra 1500 AT4XVolcanic Red 2026 GMC Sierra 1500 AT4XVolcanic Red 2026 GMC Sierra 1500 AT4XVolcanic Red 2026 GMC Sierra 1500 AT4X

    $72,977

    $1K
    Est. $1,347/mo

    Ewing Buick GMC

    4.6
    Check Availability
    Plano, TX (13 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

    $71,832

    $2.4K
    Est. $1,326/mo

    Ewing Buick GMC

    4.6
    Check Availability
    Plano, TX (13 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

    $77,041

    $1K

    MSRP $90,195

    Est. $1,422/mo

    McKinney Buick GMC

    4.1
    Check Availability
    McKinney, TX (10 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

    $71,832

    $153
    Est. $1,326/mo

    Ewing Buick GMC

    4.6
    Check Availability
    Plano, TX (13 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

    $77,041

    $1K

    MSRP $90,195

    Est. $1,422/mo

    McKinney Buick GMC

    4.1
    Check Availability
    McKinney, TX (10 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

    $77,041

    $1K

    MSRP $90,195

    Est. $1,422/mo

    McKinney Buick GMC

    4.1
    Check Availability
    McKinney, TX (10 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

    $77,041

    $1K

    MSRP $90,195

    Est. $1,422/mo

    McKinney Buick GMC

    4.1
    Check Availability
    McKinney, TX (10 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

    $70,242

    $2.4K
    Est. $1,296/mo

    Ewing Buick GMC

    4.6
    Check Availability
    Plano, TX (13 mi)
    Quick view
  • 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

    $77,041

    $1K

    MSRP $90,195

    Est. $1,422/mo

    McKinney Buick GMC

    4.1
    Check Availability
    McKinney, TX (10 mi)
    Quick view
  • 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

    $71,337

    $2.4K
    Est. $1,317/mo

    Ewing Buick GMC

    4.6
    Check Availability
    Plano, TX (13 mi)

    Quick view
  • 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

    $72,826

    $1K

    MSRP $85,980

    Est. $1,344/mo

    McKinney Buick GMC

    4.1
    Check Availability
    McKinney, TX (10 mi)
    Quick view
  • 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

    $71,631

    $1K

    MSRP $84,785

    Est. $1,322/mo

    McKinney Buick GMC

    4.1
    Check Availability
    McKinney, TX (10 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

    $77,041

    $1K

    MSRP $90,195

    Est. $1,422/mo

    McKinney Buick GMC

    4.1
    Check Availability
    McKinney, TX (10 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4X

    $72,625

    MSRP $86,875

    Est. $1,340/mo

    Freeman Buick GMC

    3.2
    Check Availability
    Grapevine, TX (28 mi)
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  • Dune 2026 GMC Sierra 1500 AT4X

    $72,625

    $1K

    MSRP $86,875

    Est. $1,340/mo

    Freeman Buick GMC

    3.2
    Check Availability
    Grapevine, TX (28 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4X

    $70,090

    $1K
    Est. $1,294/mo

    Laura Buick GMC

    4.6
    Check Availability
    $1,077 delivery from Collinsville, IL (539 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
    $1,077 delivery from Collinsville, IL (539 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