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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

    $66,060

    Est. $1,150/mo

    Bomnin Chevrolet Buick GMC Nanuet

    4.7
    Check Availability
    Nanuet, NY (21 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

    $76,395

    Est. $1,330/mo

    Colandrea Buick GMC, Inc.

    4.7
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    Newburgh, NY (9 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

    $78,365

    Est. $1,365/mo

    Meadowland of Carmel

    4.2
    Check Availability
    Carmel, NY (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

    $66,060

    Est. $1,150/mo

    Bomnin Chevrolet Buick GMC Nanuet

    4.7
    Check Availability
    Nanuet, NY (21 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

    $68,831

    $4.6K

    MSRP $77,265

    Est. $1,199/mo

    Ingersoll Auto of Danbury

    4.2
    Check Availability
    Danbury, CT (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

    $78,365

    MSRP $78,365

    Est. $1,365/mo

    Bill Volz's Westchester

    4.1
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    Cortlandt Manor, NY (9 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4

    $76,694

    Est. $1,336/mo

    Colandrea Buick GMC, Inc.

    4.7
    Check Availability
    Newburgh, NY (9 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

    $67,552

    MSRP $75,875

    Est. $1,176/mo

    Ingersoll Auto of Danbury

    4.2
    Check Availability
    Danbury, CT (29 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4

    $76,694

    Est. $1,336/mo

    Colandrea Buick GMC, Inc.

    4.7
    Check Availability
    Newburgh, NY (9 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

    $65,860

    Est. $1,147/mo

    Bomnin Chevrolet Buick GMC Nanuet

    4.7
    Check Availability
    Nanuet, NY (21 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

    $72,590

    MSRP $76,370

    Est. $1,264/mo

    Ingersoll Auto of Danbury

    4.2
    Check Availability
    Danbury, CT (29 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

    $75,550

    Est. $1,316/mo

    Colandrea Buick GMC, Inc.

    4.7
    Check Availability
    Newburgh, NY (9 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

    $76,199

    Est. $1,327/mo

    Colandrea Buick GMC, Inc.

    4.7
    Check Availability
    Newburgh, NY (9 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

    $68,007

    $4.5K

    MSRP $76,370

    Est. $1,184/mo

    Ingersoll Auto of Danbury

    4.2
    Check Availability
    Danbury, CT (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

    $62,997

    $1K
    18 mi.
    Est. $1,097/mo

    Ingersoll Auto of Danbury

    4.2
    Check Availability
    Danbury, CT (29 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

    Not Priced

    Meadowland of Carmel

    4.2
    Check Availability
    Carmel, NY (17 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 AT4

    $74,944

    Est. $1,305/mo

    GMC Bedford Hills

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    Bedford Hills, NY (18 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4

    $74,944

    Est. $1,305/mo

    GMC Bedford Hills

    Check Availability
    Bedford Hills, NY (18 mi)
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  • Coastal Dune 2026 GMC Sierra 1500 AT4

    $76,395

    Est. $1,330/mo

    Colandrea Buick GMC, Inc.

    4.7
    Check Availability
    Newburgh, NY (9 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

    $75,640

    Est. $1,317/mo

    Coleman Buick GMC

    4.4
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    $599 delivery from Lawrenceville, NJ (85 mi)
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  • Volcanic Red Tintcoat 2026 GMC Sierra 1500 AT4Volcanic Red Tintcoat 2026 GMC Sierra 1500 AT4Volcanic Red Tintcoat 2026 GMC Sierra 1500 AT4Volcanic Red Tintcoat 2026 GMC Sierra 1500 AT4Volcanic Red Tintcoat 2026 GMC Sierra 1500 AT4Volcanic Red Tintcoat 2026 GMC Sierra 1500 AT4

    $76,395

    Est. $1,330/mo

    Coleman Buick GMC

    4.4
    Check Availability
    $599 delivery from Lawrenceville, NJ (85 mi)
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  • Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4

    $66,997

    32 mi.
    Est. $1,167/mo

    GMC of Watertown

    3.9
    Check Availability
    Watertown, CT (47 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4

    $62,997

    11 mi.
    Est. $1,097/mo

    GMC of Watertown

    3.9
    Check Availability
    Watertown, CT (47 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

    $75,137

    MSRP $78,969

    Est. $1,308/mo

    GMC of Watertown

    3.9
    Check Availability
    Watertown, CT (47 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

    $67,552

    MSRP $75,875

    Est. $1,176/mo

    GMC of Watertown

    3.9
    Check Availability
    Watertown, CT (47 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 AT4

    $75,795

    Est. $1,320/mo

    Quality Chevrolet of Englewood

    4.1
    Check Availability
    Englewood, NJ (36 mi)
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  • Volcanic Red 2026 GMC Sierra 1500 AT4

    $76,195

    Est. $1,327/mo

    North Bergen Buick GMC

    4.9
    Check Availability
    North Bergen, NJ (41 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

    $72,200

    $6.7K
    Est. $1,257/mo

    Performance Buick GMC

    4.8
    Check Availability
    Cedar Knolls, NJ (46 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4

    $74,150

    Est. $1,291/mo

    North Bergen Buick GMC

    4.9
    Check Availability
    North Bergen, NJ (41 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 AT4

    $69,858

    MSRP $76,080

    Est. $1,216/mo

    Romeo Chevrolet Buick GMC

    4.3
    Check Availability
    Lake Katrine, NY (41 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4

    $76,249

    Est. $1,328/mo

    North Bay Cadillac GMC

    4.2
    Check Availability
    Great Neck, NY (45 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 AT4

    $76,249

    Est. $1,328/mo

    North Bay Cadillac GMC

    4.2
    Check Availability
    Great Neck, NY (45 mi)
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  • Onyx Black 2026 GMC Sierra 1500 AT4

    $78,194

    Est. $1,362/mo

    North Bay Cadillac GMC

    4.2
    Check Availability
    Great Neck, NY (45 mi)
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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 (6 reviews)

83% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.3
Interior
4.3
Performance
4.5
Value
3.7
Exterior
4.5
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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2026 GMC Sierra 1500 AT4 by city

GMC Sierra 1500 trims