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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

    $79,235

    $959

    MSRP $81,995

    Est. $1,432/mo

    MIRACLE BUICK GMC OF KUTZTOWN

    2.6
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    Fleetwood, PA (17 mi)

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  • Black 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4X

    $76,934

    $1K

    MSRP $86,875

    Est. $1,390/mo

    Patriot Buick GMC

    4.7
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    Boyertown, PA (5 mi)
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  • Tan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4X

    $76,934

    $1K

    MSRP $86,875

    Est. $1,390/mo

    Patriot Buick GMC

    4.7
    Check Availability
    Boyertown, PA (5 mi)
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  • Black 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4X

    $77,167

    MSRP $84,980

    Est. $1,395/mo

    Patriot Buick GMC

    4.7
    Check Availability
    Boyertown, PA (5 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

    $75,638

    $1K
    Est. $1,367/mo

    Bergey's Buick GMC

    4.6
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    Souderton, PA (18 mi)
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  • Tan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4X

    $76,934

    $1K

    MSRP $86,875

    Est. $1,390/mo

    Patriot Buick GMC

    4.7
    Check Availability
    Boyertown, PA (5 mi)
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  • Black 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4X

    $75,706

    $1K

    MSRP $85,580

    Est. $1,368/mo

    Patriot Buick GMC

    4.7
    Check Availability
    Boyertown, PA (5 mi)
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  • Tan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4X

    $77,325

    Est. $1,397/mo

    Star GMC of Quakertown

    4.2
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    Quakertown, PA (21 mi)
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  • White 2026 GMC Sierra 1500 AT4XWhite 2026 GMC Sierra 1500 AT4XWhite 2026 GMC Sierra 1500 AT4XWhite 2026 GMC Sierra 1500 AT4XWhite 2026 GMC Sierra 1500 AT4XWhite 2026 GMC Sierra 1500 AT4X

    $75,245

    $1K

    MSRP $85,085

    Est. $1,360/mo

    Patriot Buick GMC

    4.7
    Check Availability
    Boyertown, PA (5 mi)
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  • Red 2026 GMC Sierra 1500 AT4XRed 2026 GMC Sierra 1500 AT4XRed 2026 GMC Sierra 1500 AT4XRed 2026 GMC Sierra 1500 AT4XRed 2026 GMC Sierra 1500 AT4XRed 2026 GMC Sierra 1500 AT4X

    $75,125

    $1K

    MSRP $84,935

    Est. $1,358/mo

    Patriot Buick GMC

    4.7
    Check Availability
    Boyertown, PA (5 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

    $76,099

    $1K
    Est. $1,375/mo

    Bergey's Buick GMC

    4.6
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    Souderton, PA (18 mi)
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  • Gray 2026 GMC Sierra 1500 AT4X

    $79,620

    $6.2K
    Est. $1,439/mo

    Star GMC of Quakertown

    4.2
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    Quakertown, PA (21 mi)
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  • Red 2026 GMC Sierra 1500 AT4X

    $79,770

    $1K
    Est. $1,442/mo

    Star GMC of Quakertown

    4.2
    Check Availability
    Quakertown, PA (21 mi)
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  • Black 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4XBlack 2026 GMC Sierra 1500 AT4X

    $83,935

    Est. $1,517/mo

    Star GMC of Quakertown

    4.2
    Check Availability
    Quakertown, PA (21 mi)
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  • Red 2026 GMC Sierra 1500 AT4XRed 2026 GMC Sierra 1500 AT4XRed 2026 GMC Sierra 1500 AT4XRed 2026 GMC Sierra 1500 AT4XRed 2026 GMC Sierra 1500 AT4XRed 2026 GMC Sierra 1500 AT4X

    $77,475

    Est. $1,400/mo

    Star GMC of Quakertown

    4.2
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    Quakertown, PA (21 mi)
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  • Tan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4XTan 2026 GMC Sierra 1500 AT4X

    $75,625

    $1K
    Est. $1,367/mo

    Star GMC of Quakertown

    4.2
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    Quakertown, PA (21 mi)
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  • Black 2026 GMC Sierra 1500 AT4X

    $91,585

    Est. $1,655/mo

    Patriot Buick GMC

    4.7
    Check Availability
    Boyertown, PA (5 mi)
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  • Black 2026 GMC Sierra 1500 AT4X

    $82,890

    Est. $1,498/mo

    Patriot Buick GMC

    4.7
    Check Availability
    Boyertown, PA (5 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4X

    $84,785

    MSRP $84,785

    Est. $1,532/mo

    Granite Run Buick GMC

    4.1
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    Media, PA (30 mi)
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  • Dune 2026 GMC Sierra 1500 AT4X

    $85,980

    MSRP $85,980

    Est. $1,554/mo

    Granite Run Buick GMC

    4.1
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    Media, PA (30 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4X

    $85,980

    MSRP $85,980

    Est. $1,554/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (30 mi)
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  • Dune 2026 GMC Sierra 1500 AT4X

    $85,980

    MSRP $85,980

    Est. $1,554/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (30 mi)
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  • Gray 2026 GMC Sierra 1500 AT4XGray 2026 GMC Sierra 1500 AT4XGray 2026 GMC Sierra 1500 AT4XGray 2026 GMC Sierra 1500 AT4XGray 2026 GMC Sierra 1500 AT4XGray 2026 GMC Sierra 1500 AT4X

    $78,706

    $1K

    MSRP $85,580

    Est. $1,422/mo

    #1 Cochran Buick GMC Monroeville

    4.8
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    $750 delivery from Monroeville, PA (214 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4X

    $71,995

    $1K
    Est. $1,301/mo

    Impex Chevrolet GMC

    4.7
    Check Availability
    $396 delivery from Reidsville, NC (348 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 (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

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