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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

    $64,995

    987 mi.
    Est. $1,177/mo

    BMW of Houston North

    4.7
    Check Availability
    Houston, TX (18 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

    $67,672

    $1.1K

    MSRP $76,590

    Est. $1,226/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $64,399

    7,158 mi.
    Est. $1,167/mo

    Shottenkirk Nissan Katy

    4.8
    Check Availability
    Katy, TX (29 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

    $62,895

    7,580 mi.
    Est. $1,139/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $67,672

    $1.1K

    MSRP $76,590

    Est. $1,226/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $66,125

    MSRP $75,875

    Est. $1,198/mo

    Demontrond Buick GMC

    4.8
    Check Availability
    Houston, TX (20 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

    $65,349

    MSRP $75,349

    Est. $1,184/mo

    Classic Buick GMC

    4.7
    Check Availability
    Houston, TX (26 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

    $65,349

    MSRP $75,349

    Est. $1,184/mo

    Classic Buick GMC

    4.7
    Check Availability
    Houston, TX (26 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

    $68,487

    $8.9K

    MSRP $77,485

    Est. $1,241/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $67,540

    $1.1K

    MSRP $76,445

    Est. $1,223/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $67,540

    $1.1K

    MSRP $76,445

    Est. $1,223/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $65,349

    MSRP $75,349

    Est. $1,184/mo

    Classic Buick GMC

    4.7
    Check Availability
    Houston, TX (26 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

    $67,404

    $1.1K

    MSRP $76,295

    Est. $1,221/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $67,540

    MSRP $76,445

    Est. $1,223/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $67,404

    $1.1K

    MSRP $76,295

    Est. $1,221/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $64,398

    8,855 mi.
    Est. $1,167/mo

    Shottenkirk Nissan Katy

    4.8
    Check Availability
    Katy, TX (29 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

    $66,125

    MSRP $75,875

    Est. $1,198/mo

    Demontrond Buick GMC

    4.8
    Check Availability
    Houston, TX (20 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

    $66,444

    MSRP $76,444

    Est. $1,204/mo

    Classic Buick GMC

    4.7
    Check Availability
    Houston, TX (26 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

    $67,899

    9,236 mi.
    Est. $1,230/mo

    Shottenkirk Nissan Katy

    4.8
    Check Availability
    Katy, TX (29 mi)
    Quick view
  • Summit White 2026 GMC Sierra 1500 AT4

    $63,735

    MSRP $73,485

    Est. $1,155/mo

    Demontrond Buick GMC

    4.8
    Check Availability
    Houston, TX (20 mi)
    Quick view
  • 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

    $67,404

    $1.1K

    MSRP $76,295

    Est. $1,221/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 mi)
    Quick view
  • 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

    $66,444

    MSRP $76,444

    Est. $1,204/mo

    Classic Buick GMC

    4.7
    Check Availability
    Houston, TX (26 mi)
    Quick view
  • 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

    $66,800

    $5K

    MSRP $74,050

    Est. $1,210/mo

    James Wood Motors, Inc

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

    $64,277

    4,976 mi.
    Est. $1,164/mo

    James Wood Motors, Inc

    4.8
    Check Availability
    $399 delivery from Decatur, TX (240 mi)
    Quick view

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 (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

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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Best match Lowest price Highest price Lowest mileage Highest mileage Nearest location Best deal Newest year Oldest year Newest listed Oldest listed

2026 GMC Sierra 1500 AT4 by city

GMC Sierra 1500 trims