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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 AT4

    $66,475

    Est. $1,151/mo

    Starling Chevrolet GMC

    4.9
    Check Availability
    Saint Cloud, FL (2 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

    $90,641

    $3.2K

    MSRP $104,655

    Est. $1,569/mo

    Fountain Buick GMC

    4.7
    Check Availability
    Orlando, FL (16 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

    $92,991

    $2.2K

    MSRP $104,005

    Est. $1,610/mo

    Fountain Buick GMC

    4.7
    Check Availability
    Orlando, FL (16 mi)
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  • Sterling 2026 GMC Sierra 1500 AT4Sterling 2026 GMC Sierra 1500 AT4Sterling 2026 GMC Sierra 1500 AT4Sterling 2026 GMC Sierra 1500 AT4Sterling 2026 GMC Sierra 1500 AT4Sterling 2026 GMC Sierra 1500 AT4

    $73,140

    $2.2K

    MSRP $74,154

    Est. $1,266/mo

    Fountain Buick GMC

    4.7
    Check Availability
    Orlando, FL (16 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 AT4

    $64,165

    $3.5K
    Est. $1,111/mo

    Starling Chevrolet GMC

    4.9
    Check Availability
    Saint Cloud, FL (2 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

    $73,636

    MSRP $75,650

    Est. $1,275/mo

    Fountain Buick GMC

    4.7
    Check Availability
    Orlando, FL (16 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 AT4

    $67,420

    $3K
    Est. $1,167/mo

    Starling Chevrolet GMC

    4.9
    Check Availability
    Saint Cloud, FL (2 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

    $67,665

    Est. $1,171/mo

    Starling Chevrolet GMC

    4.9
    Check Availability
    Saint Cloud, FL (2 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

    $74,136

    MSRP $76,150

    Est. $1,283/mo

    Fountain Buick GMC

    4.7
    Check Availability
    Orlando, FL (16 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 AT4

    $67,170

    Est. $1,163/mo

    Starling Chevrolet GMC

    4.9
    Check Availability
    Saint Cloud, FL (2 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

    $61,545

    13,948 mi.
    Est. $1,066/mo

    Greenway Ford of Orlando

    4.1
    Check Availability
    Orlando, FL (23 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

    $69,525

    Est. $1,204/mo

    Orange Buick GMC

    4.4
    Check Availability
    Orlando, FL (23 mi)
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  • Sterling 2026 GMC Sierra 1500 AT4Sterling 2026 GMC Sierra 1500 AT4Sterling 2026 GMC Sierra 1500 AT4Sterling 2026 GMC Sierra 1500 AT4Sterling 2026 GMC Sierra 1500 AT4Sterling 2026 GMC Sierra 1500 AT4

    $90,936

    $3.2K

    MSRP $104,950

    Est. $1,574/mo

    Fountain Buick GMC

    4.7
    Check Availability
    Orlando, FL (16 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

    $72,621

    $3.2K

    MSRP $74,635

    Est. $1,257/mo

    Fountain Buick GMC

    4.7
    Check Availability
    Orlando, FL (16 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

    $68,510

    $7.1K
    Est. $1,186/mo

    Orange Buick GMC

    4.4
    Check Availability
    Orlando, FL (23 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

    $68,900

    Est. $1,193/mo

    Orange Buick GMC

    4.4
    Check Availability
    Orlando, FL (23 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

    $68,900

    Est. $1,193/mo

    Orange Buick GMC

    4.4
    Check Availability
    Orlando, FL (23 mi)
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  • Summit White 2026 GMC Sierra 1500 AT4

    $73,231

    MSRP $74,245

    Est. $1,268/mo

    Fountain Buick GMC

    4.7
    Check Availability
    Orlando, FL (16 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 AT4

    $68,900

    Est. $1,193/mo

    Orange Buick GMC

    4.4
    Check Availability
    Orlando, FL (23 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 AT4

    $65,020

    $3.2K
    Est. $1,126/mo

    Starling Chevrolet GMC

    4.9
    Check Availability
    Saint Cloud, FL (2 mi)

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  • Coastal Dune 2026 GMC Sierra 1500 AT4

    $68,900

    Est. $1,193/mo

    Orange Buick GMC

    4.4
    Check Availability
    Orlando, FL (23 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4

    $74,900

    Est. $1,297/mo

    Orange Buick GMC

    4.4
    Check Availability
    Orlando, FL (23 mi)
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  • Coastal Dune 2026 GMC Sierra 1500 AT4

    $70,995

    Est. $1,229/mo

    Orange Buick GMC

    4.4
    Check Availability
    Orlando, FL (23 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

    $66,495

    Est. $1,151/mo

    Impex Chevrolet GMC

    4.7
    Check Availability
    $646 delivery from Reidsville, NC (567 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

    $66,995

    Est. $1,160/mo

    Impex Chevrolet GMC

    4.7
    Check Availability
    $646 delivery from Reidsville, NC (567 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

    $71,186

    Est. $1,232/mo

    Kelley Buick GMC of Bartow

    4.1
    Check Availability
    Bartow, FL (42 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

    $71,714

    Est. $1,242/mo

    Kelley Buick GMC of Bartow

    4.1
    Check Availability
    Bartow, FL (42 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

    $74,945

    MSRP $78,195

    Est. $1,298/mo

    Starling GMC of Titusville

    4.6
    Check Availability
    Titusville, FL (39 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 AT4

    $72,520

    MSRP $74,770

    Est. $1,256/mo

    Starling GMC of Titusville

    4.6
    Check Availability
    Titusville, FL (39 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

    $69,542

    Est. $1,204/mo

    Kelley Buick GMC of Bartow

    4.1
    Check Availability
    Bartow, FL (42 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

    $70,714

    Est. $1,224/mo

    Kelley Buick GMC of Bartow

    4.1
    Check Availability
    Bartow, FL (42 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

    $69,793

    Est. $1,208/mo

    Kelley Buick GMC of Bartow

    4.1
    Check Availability
    Bartow, FL (42 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

    $70,714

    Est. $1,224/mo

    Kelley Buick GMC of Bartow

    4.1
    Check Availability
    Bartow, FL (42 mi)
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  • Sterling 2026 GMC Sierra 1500 AT4Sterling 2026 GMC Sierra 1500 AT4Sterling 2026 GMC Sierra 1500 AT4Sterling 2026 GMC Sierra 1500 AT4Sterling 2026 GMC Sierra 1500 AT4Sterling 2026 GMC Sierra 1500 AT4

    $72,397

    Est. $1,253/mo

    Kelley Buick GMC of Bartow

    4.1
    Check Availability
    Bartow, FL (42 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

    $69,897

    Est. $1,210/mo

    Kelley Buick GMC of Bartow

    4.1
    Check Availability
    Bartow, FL (42 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4

    $69,219

    Est. $1,198/mo

    Sam Boswell Buick GMC Mt Dora

    3.9
    Check Availability
    Mount Dora, FL (46 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

    $65,955

    Est. $1,142/mo

    Sam Boswell Buick GMC Mt Dora

    3.9
    Check Availability
    Mount Dora, FL (46 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 (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

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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2026 GMC Sierra 1500 AT4 by city

GMC Sierra 1500 trims