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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

    $73,231

    $975

    MSRP $85,035

    Est. $1,327/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $73,830

    $2K

    MSRP $85,580

    Est. $1,337/mo

    Demontrond Buick GMC

    4.8
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    Houston, TX (20 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

    $85,035

    MSRP $85,035

    Est. $1,540/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $73,364

    $11K

    MSRP $85,185

    Est. $1,329/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $84,540

    MSRP $84,540

    Est. $1,531/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $90,968

    1,470 mi.
    Est. $1,648/mo

    Lifted Trucks - Humble

    Check Availability
    Humble, TX (27 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

    $85,035

    MSRP $85,035

    Est. $1,540/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $72,335

    $2K

    MSRP $84,085

    Est. $1,310/mo

    Demontrond Buick GMC

    4.8
    Check Availability
    Houston, TX (20 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

    $84,540

    MSRP $84,540

    Est. $1,531/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $74,230

    $2K

    MSRP $85,980

    Est. $1,345/mo

    Demontrond Buick GMC

    4.8
    Check Availability
    Houston, TX (20 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

    $73,364

    $973

    MSRP $85,185

    Est. $1,329/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $73,364

    MSRP $85,185

    Est. $1,329/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $71,935

    $3K

    MSRP $83,685

    Est. $1,303/mo

    Demontrond Buick GMC

    4.8
    Check Availability
    Houston, TX (20 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

    $71,840

    $2K

    MSRP $83,590

    Est. $1,301/mo

    Demontrond Buick GMC

    4.8
    Check Availability
    Houston, TX (20 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

    $85,035

    MSRP $85,035

    Est. $1,540/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $85,185

    MSRP $85,185

    Est. $1,543/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $85,185

    MSRP $85,185

    Est. $1,543/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $74,230

    $2K

    MSRP $85,980

    Est. $1,345/mo

    Demontrond Buick GMC

    4.8
    Check Availability
    Houston, TX (20 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

    $73,364

    $973

    MSRP $85,185

    Est. $1,329/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $71,840

    $2K

    MSRP $83,590

    Est. $1,301/mo

    Demontrond Buick GMC

    4.8
    Check Availability
    Houston, TX (20 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

    $72,793

    MSRP $84,540

    Est. $1,319/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 mi)
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  • Volcanic Red Tintcoat 2026 GMC Sierra 1500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 1500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 1500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 1500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 1500 AT4XVolcanic Red Tintcoat 2026 GMC Sierra 1500 AT4X

    $73,980

    $2K

    MSRP $85,730

    Est. $1,340/mo

    Demontrond Buick GMC

    4.8
    Check Availability
    Houston, TX (20 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

    $77,130

    MSRP $85,880

    Est. $1,397/mo

    James Wood Motors, Inc

    4.8
    Check Availability
    $399 delivery from Decatur, TX (240 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

    $79,156

    Est. $1,434/mo

    Laura Buick GMC

    4.6
    Check Availability
    $1,343 delivery from Collinsville, IL (672 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