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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

    $84,290

    MSRP $84,290

    Est. $1,523/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (26 mi)
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  • Dune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4X

    $85,980

    MSRP $85,980

    Est. $1,554/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (26 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx 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 (26 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

    $78,208

    MSRP $82,890

    Est. $1,413/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

    $76,115

    Est. $1,376/mo

    Star GMC of Quakertown

    4.2
    Check Availability
    Quakertown, PA (19 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx 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 (26 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

    $76,725

    Est. $1,387/mo

    Bergey's Buick GMC

    4.6
    Check Availability
    Souderton, PA (15 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

    $77,760

    Est. $1,405/mo

    Star GMC of Quakertown

    4.2
    Check Availability
    Quakertown, PA (19 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 AT4X

    $77,715

    Est. $1,404/mo

    Star GMC of Quakertown

    4.2
    Check Availability
    Quakertown, PA (19 mi)
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  • Dune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4X

    $85,980

    MSRP $85,980

    Est. $1,554/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (26 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx 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 (26 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

    $77,220

    Est. $1,396/mo

    Bergey's Buick GMC

    4.6
    Check Availability
    Souderton, PA (15 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

    $84,425

    Est. $1,526/mo

    Star GMC of Quakertown

    4.2
    Check Availability
    Quakertown, PA (19 mi)
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  • Dune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4X

    $85,980

    MSRP $85,980

    Est. $1,554/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (26 mi)
    Quick view
  • Onyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx 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 (26 mi)
    Quick view
  • Dune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4XDune 2026 GMC Sierra 1500 AT4X

    $85,980

    MSRP $85,980

    Est. $1,554/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (26 mi)
    Quick view
  • Onyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx 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 (26 mi)
    Quick view
  • 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

    $77,815

    Est. $1,406/mo

    Star GMC of Quakertown

    4.2
    Check Availability
    Quakertown, PA (19 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

    $80,924

    MSRP $86,875

    Est. $1,462/mo

    Patriot Buick GMC

    4.7
    Check Availability
    Boyertown, PA (5 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

    $77,610

    Est. $1,403/mo

    Star GMC of Quakertown

    4.2
    Check Availability
    Quakertown, PA (19 mi)
    Quick view
  • Onyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx 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 (26 mi)
    Quick view
  • 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

    $78,235

    $500

    MSRP $81,995

    Est. $1,414/mo

    MIRACLE BUICK GMC OF KUTZTOWN

    2.7
    Check Availability
    Fleetwood, PA (20 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

    $80,924

    MSRP $86,875

    Est. $1,462/mo

    Patriot Buick GMC

    4.7
    Check Availability
    Boyertown, PA (5 mi)
    Quick view
  • 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 AT4X

    $77,610

    Est. $1,403/mo

    Star GMC of Quakertown

    4.2
    Check Availability
    Quakertown, PA (19 mi)
    Quick view
  • Onyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4XOnyx Black 2026 GMC Sierra 1500 AT4X

    $84,785

    Est. $1,532/mo

    Impex Chevrolet GMC

    4.7
    Check Availability
    $397 delivery from Reidsville, NC (349 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

    $75,245

    Est. $1,360/mo

    Impex Chevrolet GMC

    4.7
    Check Availability
    $397 delivery from Reidsville, NC (349 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