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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

    $80,071

    $555

    MSRP $90,790

    Est. $1,425/mo

    Hardin Buick GMC

    4.6
    Check Availability
    Anaheim, CA (28 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

    $85,335

    MSRP $87,250

    Est. $1,519/mo

    Santa Monica GMC

    4.4
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    Santa Monica, CA (22 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

    $74,171

    $542

    MSRP $84,785

    Est. $1,320/mo

    Hardin Buick GMC

    4.6
    Check Availability
    Anaheim, CA (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

    $75,366

    $7.4K

    MSRP $85,980

    Est. $1,341/mo

    Hardin Buick GMC

    4.6
    Check Availability
    Anaheim, 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

    $73,676

    $637

    MSRP $84,290

    Est. $1,311/mo

    Hardin Buick GMC

    4.6
    Check Availability
    Anaheim, 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

    $80,071

    $3.5K

    MSRP $90,790

    Est. $1,425/mo

    Hardin Buick GMC

    4.6
    Check Availability
    Anaheim, 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

    $80,071

    $555

    MSRP $90,790

    Est. $1,425/mo

    Hardin Buick GMC

    4.6
    Check Availability
    Anaheim, CA (28 mi)
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  • Dune 2026 GMC Sierra 1500 AT4X

    $74,171

    $7.4K

    MSRP $84,785

    Est. $1,320/mo

    Hardin Buick GMC

    4.6
    Check Availability
    Anaheim, CA (28 mi)
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  • $75,366

    $7.4K

    MSRP $85,980

    Est. $1,341/mo

    Hardin Buick GMC

    4.6
    Check Availability
    Anaheim, CA (28 mi)
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  • $75,366

    $447

    MSRP $85,980

    Est. $1,341/mo

    Hardin Buick GMC

    4.6
    Check Availability
    Anaheim, 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

    $76,841

    12,188 mi.
    Est. $1,367/mo

    Mark Christopher Chevrolet Buick GMC Cadillac

    4.6
    Check Availability
    Ontario, CA (32 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

    $78,540

    MSRP $84,290

    Est. $1,398/mo

    Mark Christopher Chevrolet Buick GMC Cadillac

    4.6
    Check Availability
    Ontario, CA (32 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

    $78,145

    MSRP $82,395

    Est. $1,391/mo

    Laguna Niguel GMC

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    Laguna Niguel, CA (50 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

    $79,372

    $5.4K

    MSRP $90,195

    Est. $1,412/mo

    Tustin Buick GMC

    3.1
    Check Availability
    Tustin, CA (36 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

    $86,587

    $1.8K

    MSRP $90,195

    Est. $1,541/mo

    Tustin Buick GMC

    3.1
    Check Availability
    Tustin, CA (36 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

    $86,112

    $1.7K

    MSRP $89,700

    Est. $1,532/mo

    Tustin Buick GMC

    3.1
    Check Availability
    Tustin, CA (36 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

    $90,185

    MSRP $92,025

    Est. $1,605/mo

    Tustin Buick GMC

    3.1
    Check Availability
    Tustin, CA (36 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

    $73,057

    MSRP $84,785

    Est. $1,300/mo

    Costa Mesa GMC

    1.4
    Check Availability
    Costa Mesa, CA (36 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

    $79,372

    $357

    MSRP $90,195

    Est. $1,412/mo

    Tustin Buick GMC

    3.1
    Check Availability
    Tustin, CA (36 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

    $86,587

    $1.8K

    MSRP $90,195

    Est. $1,541/mo

    Tustin Buick GMC

    3.1
    Check Availability
    Tustin, CA (36 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

    $90,195

    MSRP $90,195

    Est. $1,605/mo

    Tustin Buick GMC

    3.1
    Check Availability
    Tustin, CA (36 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

    $85,880

    MSRP $85,880

    Est. $1,528/mo

    Tustin Buick GMC

    3.1
    Check Availability
    Tustin, CA (36 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 (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