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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

    $56,160

    $100
    20,950 mi.
    Est. $1,033/mo

    Lynch Buick GMC of West Bend

    West Bend, WI (22 mi)
    Check Availability

  • 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

    $63,599

    $400
    2,008 mi.
    Est. $1,170/mo

    Lynch Buick GMC of West Bend

    West Bend, WI (22 mi)
    Check Availability

  • 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

    $56,160

    $100
    20,950 mi.
    Est. $1,033/mo

    Lynch Buick GMC of West Bend

    West Bend, WI (22 mi)
    Check Availability

  • 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

    $73,198

    Est. $1,347/mo

    Brookfield Buick GMC

    4.7
    Brookfield, WI (10 mi)
    Check Availability
  • 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

    $98,235

    Est. $1,807/mo

    Ewald Buick GMC of Menomonee Falls

    4.7
    Menomonee Falls, WI (9 mi)
    Check Availability
  • 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

    $93,335

    Est. $1,717/mo

    Ewald Buick GMC of Menomonee Falls

    4.7
    Menomonee Falls, WI (9 mi)
    Check Availability
  • 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

    $65,780

    MSRP $75,155

    Est. $1,210/mo

    Kunes Buick GMC of Oak Creek

    4.3
    Oak Creek, WI (17 mi)
    Check Availability
  • 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

    $73,657

    Est. $1,355/mo

    Brookfield Buick GMC

    4.7
    Brookfield, WI (10 mi)
    Check Availability
  • 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

    $62,344

    2,701 mi.
    Est. $1,147/mo

    Uptown Ford Lincoln

    4.5
    Milwaukee, WI (10 mi)
    Check Availability

  • 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

    $68,769

    Est. $1,265/mo

    Lynch Buick GMC of West Bend

    West Bend, WI (22 mi)
    Check Availability
  • 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

    $73,657

    Est. $1,355/mo

    Brookfield Buick GMC

    4.7
    Brookfield, WI (10 mi)
    Check Availability
  • 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

    $68,061

    Est. $1,252/mo

    Lynch Buick GMC of West Bend

    West Bend, WI (22 mi)
    Check Availability
  • 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

    $65,780

    MSRP $75,155

    Est. $1,210/mo

    Kunes Buick GMC of Oak Creek

    4.3
    Oak Creek, WI (17 mi)
    Check Availability
  • 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

    $71,943

    Est. $1,323/mo

    Lynch Buick GMC of West Bend

    West Bend, WI (22 mi)
    Check Availability
  • 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

    $65,379

    $2K
    7 mi.
    Est. $1,203/mo

    Brookfield Buick GMC

    4.7
    Brookfield, WI (10 mi)
    Check Availability

  • 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

    $70,388

    Est. $1,295/mo

    Lynch Buick GMC of West Bend

    West Bend, WI (22 mi)
    Check Availability
  • 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

    $65,692

    MSRP $75,060

    Est. $1,208/mo

    Kunes Buick GMC of Oak Creek

    4.3
    Oak Creek, WI (17 mi)
    Check Availability
  • 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

    $65,692

    MSRP $75,060

    Est. $1,208/mo

    Kunes Buick GMC of Oak Creek

    4.3
    Oak Creek, WI (17 mi)
    Check Availability
  • 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

    $67,155

    MSRP $76,650

    Est. $1,235/mo

    Kunes Buick GMC of Oak Creek

    4.3
    Oak Creek, WI (17 mi)
    Check Availability
  • 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

    $65,692

    MSRP $75,060

    Est. $1,208/mo

    Kunes Buick GMC of Oak Creek

    4.3
    Oak Creek, WI (17 mi)
    Check Availability
  • 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

    $68,061

    Est. $1,252/mo

    Lynch Buick GMC of West Bend

    West Bend, WI (22 mi)
    Check Availability

  • 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

    $67,155

    MSRP $76,650

    Est. $1,235/mo

    Kunes Buick GMC of Oak Creek

    4.3
    Oak Creek, WI (17 mi)
    Check Availability
  • Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4

    $55,999

    6,234 mi.
    Est. $1,030/mo

    Eric von Schledorn Chevrolet Cadillac

    3.7
    Saukville, WI (16 mi)
    Check Availability
  • Onyx Black 2026 GMC Sierra 1500 AT4

    $70,658

    $3K
    Est. $1,300/mo

    Ewald Buick GMC of Menomonee Falls

    4.7
    Menomonee Falls, WI (9 mi)
    Check Availability
  • 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

    $59,981

    Est. $1,103/mo

    Laura Buick GMC

    4.5
    $655 delivery from Collinsville, IL (328 mi)
    Check Availability
  • 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

    $63,162

    $250

    MSRP $74,225

    Est. $1,162/mo

    Woody Buick GMC Naperville

    4.9
    $299 delivery from Naperville, IL (98 mi)
    Check Availability
  • Sterling Metallic (gxd) 2026 GMC Sierra 1500 AT4Sterling Metallic (gxd) 2026 GMC Sierra 1500 AT4Sterling Metallic (gxd) 2026 GMC Sierra 1500 AT4Sterling Metallic (gxd) 2026 GMC Sierra 1500 AT4Sterling Metallic (gxd) 2026 GMC Sierra 1500 AT4Sterling Metallic (gxd) 2026 GMC Sierra 1500 AT4

    $57,398

    8,034 mi.
    Est. $1,056/mo

    Meyer Motors

    4.6
    Plymouth, WI (41 mi)
    Check Availability
  • Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4

    $57,398

    $701
    5,231 mi.
    Est. $1,056/mo

    Meyer Motors

    4.6
    Plymouth, WI (41 mi)
    Check Availability
  • Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4

    $58,099

    3,652 mi.
    Est. $1,069/mo

    Meyer Motors

    4.6
    Plymouth, WI (41 mi)
    Check Availability
  • Onyx Black (gba) 2026 GMC Sierra 1500 AT4Onyx Black (gba) 2026 GMC Sierra 1500 AT4Onyx Black (gba) 2026 GMC Sierra 1500 AT4Onyx Black (gba) 2026 GMC Sierra 1500 AT4Onyx Black (gba) 2026 GMC Sierra 1500 AT4Onyx Black (gba) 2026 GMC Sierra 1500 AT4

    $70,219

    MSRP $76,570

    Est. $1,292/mo

    Meyer Motors

    4.6
    Plymouth, WI (41 mi)
    Check Availability
  • 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

    $68,911

    MSRP $74,530

    Est. $1,268/mo

    Palmen Buick, GMC, Cadillac

    4.6
    Kenosha, WI (41 mi)
    Check Availability
  • Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4

    $68,129

    MSRP $73,980

    Est. $1,253/mo

    Meyer Motors

    4.6
    Plymouth, WI (41 mi)
    Check Availability
  • Sterling Metallic (gxd) 2026 GMC Sierra 1500 AT4Sterling Metallic (gxd) 2026 GMC Sierra 1500 AT4Sterling Metallic (gxd) 2026 GMC Sierra 1500 AT4Sterling Metallic (gxd) 2026 GMC Sierra 1500 AT4Sterling Metallic (gxd) 2026 GMC Sierra 1500 AT4Sterling Metallic (gxd) 2026 GMC Sierra 1500 AT4

    $70,314

    MSRP $76,665

    Est. $1,293/mo

    Meyer Motors

    4.6
    Plymouth, WI (41 mi)
    Check Availability
  • 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

    $92,632

    Est. $1,704/mo

    Kunes Chevrolet GMC of Elkhorn

    3.9
    Elkhorn, WI (48 mi)
    Check Availability
  • Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4Summit White (gaz) 2026 GMC Sierra 1500 AT4

    $69,029

    MSRP $74,880

    Est. $1,270/mo

    Meyer Motors

    4.6
    Plymouth, WI (41 mi)
    Check Availability
  • 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

    $70,919

    MSRP $76,770

    Est. $1,305/mo

    Meyer Motors

    4.6
    Plymouth, WI (41 mi)
    Check Availability
  • 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

    $64,067

    Est. $1,179/mo

    Holz Chevrolet Buick GMC

    Watertown, WI (42 mi)
    Check Availability
  • 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

    $68,832

    MSRP $75,550

    Est. $1,266/mo

    Palmen Buick, GMC, Cadillac

    4.6
    Kenosha, WI (41 mi)
    Check Availability

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 $68,300.

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 4.6 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2026 Sierra 1500 owners.

Ratings (7 reviews)

85% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.4
Interior
4.4
Performance
4.6
Value
3.9
Exterior
4.6
Reliability
4.6
Trims

AT4 (2 styles)

Style
4WD Crew Cab 147" AT4 4WD Crew Cab 157" AT4
Inventory price
Starting at $68,300 Starting at $68,800
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)

2026 GMC Sierra 1500 AT4 by city

2026 GMC Sierra 1500 trims