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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

    $77,839

    Est. $1,420/mo

    Lorenzo Buick GMC

    4.4
    Check Availability
    Miami, FL (9 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

    $88,719

    MSRP $95,469

    Est. $1,618/mo

    Williamson Buick GMC

    4.6
    Check Availability
    Miami, FL (2 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

    $78,334

    Est. $1,429/mo

    Lorenzo Buick GMC

    4.4
    Check Availability
    Miami, FL (9 mi)
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  • 2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X

    $85,880

    MSRP $85,880

    Est. $1,567/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 mi)
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  • 2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X

    $85,880

    MSRP $85,880

    Est. $1,567/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 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

    $85,880

    MSRP $85,880

    Est. $1,567/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 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

    $85,385

    MSRP $85,385

    Est. $1,558/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 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

    $85,880

    MSRP $85,880

    Est. $1,567/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 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

    $85,880

    MSRP $85,880

    Est. $1,567/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4X

    $85,880

    MSRP $85,880

    Est. $1,567/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 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

    $85,880

    MSRP $85,880

    Est. $1,567/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 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

    $85,880

    MSRP $85,880

    Est. $1,567/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 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

    $85,880

    MSRP $85,880

    Est. $1,567/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 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

    $85,385

    MSRP $85,385

    Est. $1,558/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 mi)
    Quick view
  • 2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X

    $85,880

    MSRP $85,880

    Est. $1,567/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 mi)
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  • Coastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4X

    $85,880

    MSRP $85,880

    Est. $1,567/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 mi)
    Quick view
  • 2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X

    $85,880

    MSRP $85,880

    Est. $1,567/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 mi)
    Quick view
  • Sterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4XSterling Metallic 2026 GMC Sierra 1500 AT4X

    $85,880

    MSRP $85,880

    Est. $1,567/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 mi)
    Quick view
  • Coastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4X

    $85,880

    MSRP $85,880

    Est. $1,567/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 mi)
    Quick view
  • Coastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4XCoastal Dune 2026 GMC Sierra 1500 AT4X

    $85,880

    MSRP $85,880

    Est. $1,567/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 mi)
    Quick view
  • 2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X

    $85,880

    MSRP $85,880

    Est. $1,567/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 mi)
    Quick view
  • 2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X

    $85,880

    MSRP $85,880

    Est. $1,567/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 mi)
    Quick view
  • 2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X2026 GMC Sierra 1500 AT4X

    $85,880

    MSRP $85,880

    Est. $1,567/mo

    Brickell Buick & GMC

    4.4
    Check Availability
    Miami, FL (9 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 AT4XBlack 2026 GMC Sierra 1500 AT4X

    $82,955

    MSRP $85,980

    Est. $1,513/mo

    Group 1 Buick GMC South

    4.6
    Check Availability
    Free delivery from Houston, TX (952 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

    $68,998

    $4K
    7,305 mi.
    Est. $1,259/mo

    CarMax Texas Stadium (Irving)

    4.2
    Check Availability
    $899 delivery to Doral, FL (9 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
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