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  • 2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X

    $83,907

    MSRP $83,785

    Est. $1,483/mo

    Tustin Buick GMC

    3.1
    Tustin, CA (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

    $76,796

    MSRP $84,290

    Est. $1,357/mo

    Hardin Buick GMC

    4.6
    Anaheim, CA (20 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

    $80,976

    MSRP $90,790

    Est. $1,431/mo

    Hardin Buick GMC

    4.6
    Anaheim, CA (20 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

    $77,192

    $4.4K

    MSRP $84,785

    Est. $1,364/mo

    Simpson Buick GMC of Buena Park

    4.8
    Buena Park, CA (13 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

    $75,297

    MSRP $84,290

    Est. $1,331/mo

    Hardin Buick GMC

    4.6
    Anaheim, CA (20 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

    $80,976

    MSRP $90,790

    Est. $1,431/mo

    Hardin Buick GMC

    4.6
    Anaheim, CA (20 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

    $78,591

    $6.3K

    MSRP $90,195

    Est. $1,389/mo

    Tustin Buick GMC

    3.1
    Tustin, CA (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

    $76,774

    MSRP $85,980

    Est. $1,357/mo

    Hardin Buick GMC

    4.6
    Anaheim, CA (20 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

    $78,591

    $9.9K

    MSRP $90,195

    Est. $1,389/mo

    Tustin Buick GMC

    3.1
    Tustin, CA (28 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

    $74,837

    $9.4K

    MSRP $85,880

    Est. $1,323/mo

    Tustin Buick GMC

    3.1
    Tustin, CA (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

    $78,591

    $2.7K

    MSRP $90,195

    Est. $1,389/mo

    Tustin Buick GMC

    3.1
    Tustin, CA (28 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

    $78,591

    $6.3K

    MSRP $90,195

    Est. $1,389/mo

    Tustin Buick GMC

    3.1
    Tustin, CA (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

    $78,248

    $2.6K

    MSRP $89,800

    Est. $1,383/mo

    Tustin Buick GMC

    3.1
    Tustin, CA (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

    $80,976

    MSRP $90,790

    Est. $1,431/mo

    Hardin Buick GMC

    4.6
    Anaheim, CA (20 mi)
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  • 2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X

    $83,907

    MSRP $83,785

    Est. $1,483/mo

    Tustin Buick GMC

    3.1
    Tustin, CA (28 mi)
    Check Availability
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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

    $75,730

    MSRP $84,785

    Est. $1,339/mo

    Hardin Buick GMC

    4.6
    Anaheim, CA (20 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

    $78,048

    MSRP $90,195

    Est. $1,380/mo

    Costa Mesa GMC

    1.4
    Costa Mesa, CA (27 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

    $73,179

    MSRP $84,785

    Est. $1,293/mo

    Costa Mesa GMC

    1.4
    Costa Mesa, CA (27 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

    $73,179

    MSRP $84,785

    Est. $1,293/mo

    Costa Mesa GMC

    1.4
    Costa Mesa, CA (27 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

    $75,730

    $5.8K

    MSRP $84,785

    Est. $1,339/mo

    Hardin Buick GMC

    4.6
    Anaheim, CA (20 mi)
    Check Availability

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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

    $78,591

    $6.3K

    MSRP $90,195

    Est. $1,389/mo

    Tustin Buick GMC

    3.1
    Tustin, CA (28 mi)
    Check Availability
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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

    $78,161

    $6.2K

    MSRP $89,700

    Est. $1,382/mo

    Tustin Buick GMC

    3.1
    Tustin, CA (28 mi)
    Check Availability
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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

    $78,248

    $2.6K

    MSRP $89,800

    Est. $1,383/mo

    Tustin Buick GMC

    3.1
    Tustin, CA (28 mi)
    Check Availability
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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

    $77,817

    $2.6K

    MSRP $89,305

    Est. $1,375/mo

    Tustin Buick GMC

    3.1
    Tustin, CA (28 mi)
    Check Availability
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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

    $80,183

    $8.2K

    MSRP $92,025

    Est. $1,417/mo

    Tustin Buick GMC

    3.1
    Tustin, CA (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

    $75,730

    $5.8K

    MSRP $84,785

    Est. $1,339/mo

    Hardin Buick GMC

    4.6
    Anaheim, CA (20 mi)
    Check Availability

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  • 2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X

    $83,907

    MSRP $83,785

    Est. $1,483/mo

    Tustin Buick GMC

    3.1
    Tustin, CA (28 mi)
    Check Availability
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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

    $73,227

    $1.7K
    314 mi.
    Est. $1,294/mo

    AutoCenters Nissan

    4.6
    $3,140 delivery from Herculaneum, MO (1570 mi)
    Check Availability
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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 (6 reviews)

83% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.3
Interior
4.3
Performance
4.5
Value
3.7
Exterior
4.5
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