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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

    $66,485

    Est. $1,135/mo

    Bergey's Buick GMC

    4.6
    Souderton, PA (15 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

    $68,875

    Est. $1,176/mo

    Star GMC of Quakertown

    4.3
    Quakertown, PA (19 mi)
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  • Tan 2026 GMC Sierra 1500 AT4Tan 2026 GMC Sierra 1500 AT4Tan 2026 GMC Sierra 1500 AT4Tan 2026 GMC Sierra 1500 AT4Tan 2026 GMC Sierra 1500 AT4Tan 2026 GMC Sierra 1500 AT4

    $68,275

    Est. $1,166/mo

    Star GMC of Quakertown

    4.3
    Quakertown, PA (19 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

    $102,092

    Est. $1,743/mo

    Star GMC of Quakertown

    4.3
    Quakertown, PA (19 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

    $66,485

    Est. $1,135/mo

    Bergey's Buick GMC

    4.6
    Souderton, PA (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

    $66,495

    Est. $1,135/mo

    Bergey's Buick GMC

    4.6
    Souderton, PA (15 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

    $66,485

    Est. $1,135/mo

    Bergey's Buick GMC

    4.6
    Souderton, PA (15 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

    $71,195

    MSRP $76,045

    Est. $1,215/mo

    Kelly Buick GMC

    4.5
    Emmaus, PA (22 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

    $67,380

    Est. $1,150/mo

    Star GMC of Quakertown

    4.3
    Quakertown, PA (19 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

    $68,385

    Est. $1,167/mo

    Bergey's Buick GMC

    4.6
    Souderton, PA (15 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

    $71,670

    $1K

    MSRP $75,180

    Est. $1,223/mo

    Hill Buick GMC

    5.0
    Newtown Square, PA (22 mi)
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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

    $69,715

    Est. $1,190/mo

    Star GMC of Quakertown

    4.3
    Quakertown, PA (19 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

    $71,195

    MSRP $76,045

    Est. $1,215/mo

    Kelly Buick GMC

    4.5
    Emmaus, PA (22 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

    $72,330

    MSRP $75,090

    Est. $1,235/mo

    Faulkner Buick GMC West Chester

    4.7
    West Chester, PA (21 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

    $69,480

    Est. $1,186/mo

    Bergey's Buick GMC

    4.6
    Souderton, PA (15 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

    $67,480

    Est. $1,152/mo

    Star GMC of Quakertown

    4.3
    Quakertown, PA (19 mi)
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  • White 2026 GMC Sierra 1500 AT4White 2026 GMC Sierra 1500 AT4White 2026 GMC Sierra 1500 AT4White 2026 GMC Sierra 1500 AT4White 2026 GMC Sierra 1500 AT4White 2026 GMC Sierra 1500 AT4

    $67,280

    Est. $1,149/mo

    Star GMC of Quakertown

    4.3
    Quakertown, PA (19 mi)
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  • Tan 2026 GMC Sierra 1500 AT4Tan 2026 GMC Sierra 1500 AT4Tan 2026 GMC Sierra 1500 AT4Tan 2026 GMC Sierra 1500 AT4Tan 2026 GMC Sierra 1500 AT4Tan 2026 GMC Sierra 1500 AT4

    $68,770

    Est. $1,174/mo

    Star GMC of Quakertown

    4.3
    Quakertown, PA (19 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

    $102,092

    Est. $1,743/mo

    Star GMC of Quakertown

    4.3
    Quakertown, PA (19 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

    $67,775

    Est. $1,157/mo

    Star GMC of Quakertown

    4.3
    Quakertown, PA (19 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

    $113,818

    Est. $1,943/mo

    Star GMC of Quakertown

    4.3
    Quakertown, PA (19 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

    $113,818

    Est. $1,943/mo

    Star GMC of Quakertown

    4.3
    Quakertown, PA (19 mi)
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  • Dune 2026 GMC Sierra 1500 AT4

    $76,240

    MSRP $75,750

    Est. $1,302/mo

    Granite Run Buick GMC

    3.6
    Media, PA (26 mi)
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  • Summit White 2026 GMC Sierra 1500 AT4

    $75,745

    MSRP $75,255

    Est. $1,293/mo

    Granite Run Buick GMC

    3.6
    Media, PA (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

    $75,640

    Est. $1,291/mo

    Coleman Buick GMC

    4.4
    $599 delivery from Lawrenceville, NJ (49 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

    $67,794

    Est. $1,157/mo

    Impex Chevrolet GMC

    4.7
    $397 delivery from Reidsville, NC (349 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

    $76,395

    Est. $1,304/mo

    Coleman Buick GMC

    4.4
    Lawrenceville, NJ (49 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

    $68,975

    Est. $1,177/mo

    Star GMC of Easton

    4.5
    Easton, PA (35 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

    $74,845

    Est. $1,278/mo

    Coleman Buick GMC

    4.4
    Lawrenceville, NJ (49 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

    $65,495

    MSRP $76,745

    Est. $1,118/mo

    Pointe GMC

    4.1
    Penns Grove, NJ (38 mi)
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  • White 2026 GMC Sierra 1500 AT4White 2026 GMC Sierra 1500 AT4White 2026 GMC Sierra 1500 AT4White 2026 GMC Sierra 1500 AT4White 2026 GMC Sierra 1500 AT4White 2026 GMC Sierra 1500 AT4

    $68,380

    Est. $1,167/mo

    Star GMC of Easton

    4.5
    Easton, PA (35 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

    $65,600

    $5.2K

    MSRP $74,850

    Est. $1,120/mo

    Pointe GMC

    4.1
    Penns Grove, NJ (38 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

    $75,450

    MSRP $75,450

    Est. $1,288/mo

    Bennett Buick GMC of Lebanon

    Lebanon, PA (44 mi)
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  • Black 2026 GMC Sierra 1500 AT4

    $68,975

    Est. $1,177/mo

    Star GMC of Easton

    4.5
    Easton, PA (35 mi)
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  • Gray 2026 GMC Sierra 1500 AT4Gray 2026 GMC Sierra 1500 AT4Gray 2026 GMC Sierra 1500 AT4

    $67,635

    Est. $1,155/mo

    Star GMC of Easton

    4.5
    Easton, PA (35 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

    $112,700

    MSRP $75,650

    Est. $1,924/mo

    Bennett Buick GMC of Lebanon

    Lebanon, PA (44 mi)
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  • White 2026 GMC Sierra 1500 AT4White 2026 GMC Sierra 1500 AT4White 2026 GMC Sierra 1500 AT4White 2026 GMC Sierra 1500 AT4White 2026 GMC Sierra 1500 AT4White 2026 GMC Sierra 1500 AT4

    $69,170

    Est. $1,181/mo

    Star GMC of Easton

    4.5
    Easton, PA (35 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

    $68,975

    Est. $1,177/mo

    Star GMC of Easton

    4.5
    Easton, PA (35 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