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  • Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4

    $68,600

    Est. $1,240/mo

    Koons of Tysons Chevrolet GMC

    4.5
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    Vienna, VA (10 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4

    $68,676

    $4.3K

    MSRP $72,985

    Est. $1,241/mo

    Brandywine Buick GMC

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    Brandywine, MD (24 mi)
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  • Summit White 2026 GMC Sierra 1500 AT4Summit White 2026 GMC Sierra 1500 AT4Summit White 2026 GMC Sierra 1500 AT4Summit White 2026 GMC Sierra 1500 AT4Summit White 2026 GMC Sierra 1500 AT4Summit White 2026 GMC Sierra 1500 AT4

    $68,505

    $2.5K
    Est. $1,238/mo

    Koons of Tysons Chevrolet GMC

    4.5
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    Vienna, VA (10 mi)
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  • Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4

    $67,259

    MSRP $73,509

    Est. $1,216/mo

    Koons Clarksville Chevy GMC

    4.5
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    Clarksville, MD (18 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4

    $73,500

    Est. $1,328/mo

    Autonation Buick GMC Laurel

    4.2
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    Laurel, MD (15 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4

    $71,000

    MSRP $76,250

    Est. $1,283/mo

    Koons Clarksville Chevy GMC

    4.5
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    Clarksville, MD (18 mi)
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  • Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4

    $70,000

    Est. $1,265/mo

    Koons Woodbridge Buick GMC

    4.1
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    Woodbridge, VA (27 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4

    $70,500

    Est. $1,274/mo

    Leesburg Buick GMC

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    Leesburg, VA (28 mi)
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  • Summit White 2026 GMC Sierra 1500 AT4

    $62,870

    $2.2K
    Est. $1,136/mo

    Joyce Koons Honda Buick GMC

    4.6
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    Manassas, VA (27 mi)
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  • Dune 2026 GMC Sierra 1500 AT4

    $63,665

    Est. $1,151/mo

    Joyce Koons Honda Buick GMC

    4.6
    Check Availability
    Manassas, VA (27 mi)
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  • Summit White 2026 GMC Sierra 1500 AT4

    $63,415

    Est. $1,146/mo

    Joyce Koons Honda Buick GMC

    4.6
    Check Availability
    Manassas, VA (27 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4

    $68,605

    MSRP $73,855

    Est. $1,240/mo

    Koons Clarksville Chevy GMC

    4.5
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    Clarksville, MD (18 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4

    $99,169

    $2K
    Est. $1,792/mo

    Leesburg Buick GMC

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    Leesburg, VA (28 mi)
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  • Volcanic Red 2026 GMC Sierra 1500 AT4Volcanic Red 2026 GMC Sierra 1500 AT4Volcanic Red 2026 GMC Sierra 1500 AT4Volcanic Red 2026 GMC Sierra 1500 AT4Volcanic Red 2026 GMC Sierra 1500 AT4Volcanic Red 2026 GMC Sierra 1500 AT4

    $68,777

    $2.2K

    MSRP $75,330

    Est. $1,243/mo

    i.g. Burton Buick GMC of Glen Burnie

    4.6
    Check Availability
    Glen Burnie, MD (29 mi)
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  • Dune 2026 GMC Sierra 1500 AT4

    $63,910

    Est. $1,155/mo

    Joyce Koons Honda Buick GMC

    4.6
    Check Availability
    Manassas, VA (27 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4

    $73,500

    Est. $1,328/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (10 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4

    $72,805

    Est. $1,316/mo

    Autonation Buick GMC Laurel

    4.2
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    Laurel, MD (15 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4

    $66,179

    Est. $1,196/mo

    Autonation Buick GMC Laurel

    4.2
    Check Availability
    Laurel, MD (15 mi)
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  • Summit White 2026 GMC Sierra 1500 AT4Summit White 2026 GMC Sierra 1500 AT4Summit White 2026 GMC Sierra 1500 AT4

    $73,005

    Est. $1,319/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (10 mi)
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  • Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4

    $71,000

    MSRP $76,250

    Est. $1,283/mo

    Koons Clarksville Chevy GMC

    4.5
    Check Availability
    Clarksville, MD (18 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 AT4

    $71,166

    $600

    MSRP $75,800

    Est. $1,286/mo

    Brandywine Buick GMC

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    Brandywine, MD (24 mi)
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  • Gray 2026 GMC Sierra 1500 AT4Gray 2026 GMC Sierra 1500 AT4Gray 2026 GMC Sierra 1500 AT4Gray 2026 GMC Sierra 1500 AT4Gray 2026 GMC Sierra 1500 AT4Gray 2026 GMC Sierra 1500 AT4

    $71,647

    MSRP $77,335

    Est. $1,295/mo

    #1 Cochran Buick GMC Monroeville

    4.8
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    $750 delivery from Monroeville, PA (174 mi)
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  • Dune 2026 GMC Sierra 1500 AT4Dune 2026 GMC Sierra 1500 AT4Dune 2026 GMC Sierra 1500 AT4Dune 2026 GMC Sierra 1500 AT4Dune 2026 GMC Sierra 1500 AT4Dune 2026 GMC Sierra 1500 AT4

    $56,995

    Est. $1,030/mo

    Laura Buick GMC

    4.6
    Check Availability
    $1,391 delivery from Collinsville, IL (696 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4

    $67,822

    $1K
    Est. $1,226/mo

    Anderson of Hunt Valley

    4.9
    Check Availability
    Cockeysville, MD (41 mi)
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  • Volcanic Red Tintcoat 2026 GMC Sierra 1500 AT4Volcanic Red Tintcoat 2026 GMC Sierra 1500 AT4Volcanic Red Tintcoat 2026 GMC Sierra 1500 AT4Volcanic Red Tintcoat 2026 GMC Sierra 1500 AT4Volcanic Red Tintcoat 2026 GMC Sierra 1500 AT4Volcanic Red Tintcoat 2026 GMC Sierra 1500 AT4

    $71,770

    Est. $1,297/mo

    Anderson of Hunt Valley

    4.9
    Check Availability
    Cockeysville, MD (41 mi)
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  • Summit White 2026 GMC Sierra 1500 AT4Summit White 2026 GMC Sierra 1500 AT4Summit White 2026 GMC Sierra 1500 AT4Summit White 2026 GMC Sierra 1500 AT4Summit White 2026 GMC Sierra 1500 AT4Summit White 2026 GMC Sierra 1500 AT4

    $70,067

    Est. $1,266/mo

    Anderson of Hunt Valley

    4.9
    Check Availability
    Cockeysville, MD (41 mi)
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  • Titanium Rush Metallic 2026 GMC Sierra 1500 AT4Titanium Rush Metallic 2026 GMC Sierra 1500 AT4Titanium Rush Metallic 2026 GMC Sierra 1500 AT4Titanium Rush Metallic 2026 GMC Sierra 1500 AT4Titanium Rush Metallic 2026 GMC Sierra 1500 AT4Titanium Rush Metallic 2026 GMC Sierra 1500 AT4

    $68,038

    Est. $1,230/mo

    Anderson of Hunt Valley

    4.9
    Check Availability
    Cockeysville, MD (41 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4

    $69,206

    Est. $1,251/mo

    Anderson of Hunt Valley

    4.9
    Check Availability
    Cockeysville, MD (41 mi)
    Quick view
  • Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4

    $68,437

    Est. $1,237/mo

    Anderson of Hunt Valley

    4.9
    Check Availability
    Cockeysville, MD (41 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4

    $68,437

    Est. $1,237/mo

    Anderson of Hunt Valley

    4.9
    Check Availability
    Cockeysville, MD (41 mi)
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About the 2026 GMC Sierra 1500 AT4

Basics

AT4 shown.

Seating
5
Door count
4
Drivetrain
Four Wheel Drive
Combined MPG
23
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 AT4
FAQs

How much does the 2026 GMC Sierra 1500 AT4 cost?

The 2026 GMC Sierra 1500 AT4 price depends on optional features. Prices typically start at $67,000.

What is the MPG of the 2026 GMC Sierra 1500 AT4?

The 2026 GMC Sierra 1500 AT4 offers up to 21 MPG in city driving and 24 MPG on the highway for a combined rating of 23 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 AT4?

The 2026 GMC Sierra 1500 AT4 compares to and/or competes against the following vehicles:


Is the 2026 GMC Sierra 1500 AT4 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

AT4 (2 styles)

Style
4WD Crew Cab 147" AT4 4WD Crew Cab 157" AT4
Inventory price
Starting at $67,000 Starting at $67,500
Combined MPG
23 23
Engine
420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel)
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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 1500 AT4 by city

GMC Sierra 1500 trims