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  • Red 2026 GMC Sierra 1500 AT4Red 2026 GMC Sierra 1500 AT4Red 2026 GMC Sierra 1500 AT4Red 2026 GMC Sierra 1500 AT4Red 2026 GMC Sierra 1500 AT4Red 2026 GMC Sierra 1500 AT4

    $67,575

    MSRP $74,325

    Est. $1,233/mo

    Ray Skillman Northeast GMC

    4.7
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    Indianapolis, IN (21 mi)

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  • Black 2026 GMC Sierra 1500 AT4Black 2026 GMC Sierra 1500 AT4Black 2026 GMC Sierra 1500 AT4Black 2026 GMC Sierra 1500 AT4Black 2026 GMC Sierra 1500 AT4Black 2026 GMC Sierra 1500 AT4

    $64,900

    MSRP $75,650

    Est. $1,184/mo

    Ray Skillman Northeast GMC

    4.7
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    Indianapolis, IN (21 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

    $61,699

    Est. $1,126/mo

    Stoops Buick GMC of Muncie

    4.4
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    Muncie, IN (24 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

    $64,226

    Est. $1,172/mo

    Stoops Buick GMC of Muncie

    4.4
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    Muncie, IN (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

    $72,198

    MSRP $76,448

    Est. $1,317/mo

    Ed Martin Buick GMC

    4.9
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    Carmel, IN (27 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

    $68,405

    $2K

    MSRP $74,655

    Est. $1,248/mo

    Ed Martin Buick GMC

    4.9
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    Carmel, IN (27 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

    $64,810

    MSRP $74,060

    Est. $1,182/mo

    Dellen Chevrolet GMC

    4.7
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    Greenfield, IN (15 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

    $66,409

    MSRP $73,610

    Est. $1,211/mo

    Dan Young Tipton LLC

    5.0
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    Tipton, IN (26 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

    $73,790

    MSRP $76,040

    Est. $1,346/mo

    Ed Martin Buick GMC

    4.9
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    Carmel, IN (27 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

    $66,450

    $945
    Est. $1,212/mo

    Andy Mohr Buick GMC

    3.6
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    Fishers, IN (14 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

    $70,012

    MSRP $75,045

    Est. $1,277/mo

    Ed Martin Buick GMC of Anderson

    4.9
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    Anderson, IN (9 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

    $64,410

    $1.9K
    Est. $1,175/mo

    Andy Mohr Buick GMC

    3.6
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    Fishers, IN (14 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

    $72,989

    MSRP $77,239

    Est. $1,331/mo

    Ed Martin Buick GMC

    4.9
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    Carmel, IN (27 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

    $65,900

    Est. $1,202/mo

    Andy Mohr Buick GMC

    3.6
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    Fishers, IN (14 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 AT4

    $67,398

    MSRP $76,648

    Est. $1,230/mo

    Dellen Chevrolet GMC

    4.7
    Check Availability
    Greenfield, IN (15 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4

    $66,500

    Est. $1,213/mo

    Andy Mohr Buick GMC

    3.6
    Check Availability
    Fishers, IN (14 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 AT4

    $72,395

    MSRP $76,645

    Est. $1,321/mo

    Ed Martin Buick GMC

    4.9
    Check Availability
    Carmel, IN (27 mi)
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  • Summit White 2026 GMC Sierra 1500 AT4

    $71,304

    MSRP $74,554

    Est. $1,301/mo

    Ed Martin Buick GMC

    4.9
    Check Availability
    Carmel, IN (27 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 AT4

    $74,379

    MSRP $78,629

    Est. $1,357/mo

    Ed Martin Buick GMC

    4.9
    Check Availability
    Carmel, IN (27 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4

    $74,379

    MSRP $78,629

    Est. $1,357/mo

    Ed Martin Buick GMC

    4.9
    Check Availability
    Carmel, IN (27 mi)
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  • Dune 2026 GMC Sierra 1500 AT4

    $74,379

    MSRP $78,629

    Est. $1,357/mo

    Ed Martin Buick GMC

    4.9
    Check Availability
    Carmel, IN (27 mi)
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  • Summit White 2026 GMC Sierra 1500 AT4

    $73,884

    MSRP $78,134

    Est. $1,348/mo

    Ed Martin Buick GMC

    4.9
    Check Availability
    Carmel, IN (27 mi)
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  • Silver 2026 GMC Sierra 1500 AT4Silver 2026 GMC Sierra 1500 AT4Silver 2026 GMC Sierra 1500 AT4Silver 2026 GMC Sierra 1500 AT4Silver 2026 GMC Sierra 1500 AT4Silver 2026 GMC Sierra 1500 AT4

    $64,998

    8,964 mi.
    Est. $1,186/mo

    CarMax Milwaukee

    4.4
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    $149 delivery to Indianapolis, IN (19 mi)
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  • Silver 2026 GMC Sierra 1500 AT4Silver 2026 GMC Sierra 1500 AT4Silver 2026 GMC Sierra 1500 AT4Silver 2026 GMC Sierra 1500 AT4Silver 2026 GMC Sierra 1500 AT4Silver 2026 GMC Sierra 1500 AT4

    $63,998

    $2K
    5,396 mi.
    Est. $1,167/mo

    CarMax Tinley Park

    4.4
    Check Availability
    Free delivery to Indianapolis, IN (19 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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2026 GMC Sierra 1500 AT4 by city

GMC Sierra 1500 trims