Skip to main content
Best match Lowest price Highest price Lowest mileage Highest mileage Nearest location Best deal Newest year Oldest year Newest listed Oldest listed
Skip to Filters
  • Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4

    $69,494

    Est. $1,203/mo

    Starling Chevrolet GMC

    4.9
    Saint Cloud, FL (2 mi)
    Check Availability

    Quick view
  • 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

    $73,231

    $2.2K

    MSRP $74,245

    Est. $1,268/mo

    Fountain Buick GMC

    4.6
    Orlando, FL (16 mi)
    Check Availability

    Quick view
  • Volcanic Red 2026 GMC Sierra 1500 AT4Volcanic Red 2026 GMC Sierra 1500 AT4Volcanic Red 2026 GMC Sierra 1500 AT4Volcanic Red 2026 GMC Sierra 1500 AT4Volcanic Red 2026 GMC Sierra 1500 AT4Volcanic Red 2026 GMC Sierra 1500 AT4

    $92,991

    $2.2K

    MSRP $104,005

    Est. $1,610/mo

    Fountain Buick GMC

    4.6
    Orlando, FL (16 mi)
    Check Availability
    Quick view
  • 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

    $65,175

    6,010 mi.
    Est. $1,128/mo

    Orange Buick GMC

    4.4
    Orlando, FL (23 mi)
    Check Availability
    Quick view
  • 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

    $72,895

    1,343 mi.
    Est. $1,262/mo

    Starling Chevrolet GMC

    4.9
    Saint Cloud, FL (2 mi)
    Check Availability
    Quick view
  • 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

    $76,366

    $3.2K

    MSRP $78,380

    Est. $1,322/mo

    Fountain Buick GMC

    4.6
    Orlando, FL (16 mi)
    Check Availability
    Quick view
  • 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

    $70,091

    $6.7K
    Est. $1,213/mo

    Orange Buick GMC

    4.4
    Orlando, FL (23 mi)
    Check Availability
    Quick view
  • Summit White 2026 GMC Sierra 1500 AT4

    $72,246

    MSRP $74,260

    Est. $1,251/mo

    Fountain Buick GMC

    4.6
    Orlando, FL (16 mi)
    Check Availability

    Quick view
  • 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

    $90,641

    $3.2K

    MSRP $104,655

    Est. $1,569/mo

    Fountain Buick GMC

    4.6
    Orlando, FL (16 mi)
    Check Availability
    Quick view
  • 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

    $72,621

    $3.2K

    MSRP $74,635

    Est. $1,257/mo

    Fountain Buick GMC

    4.6
    Orlando, FL (16 mi)
    Check Availability
    Quick view
  • Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4Onyx Black 2026 GMC Sierra 1500 AT4

    $71,265

    Est. $1,234/mo

    Starling Chevrolet GMC

    4.9
    Saint Cloud, FL (2 mi)
    Check Availability
    Quick view
  • Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4Sterling Metallic 2026 GMC Sierra 1500 AT4

    $71,165

    Est. $1,232/mo

    Starling Chevrolet GMC

    4.9
    Saint Cloud, FL (2 mi)
    Check Availability
    Quick view
  • Summit White 2026 GMC Sierra 1500 AT4Summit White 2026 GMC Sierra 1500 AT4Summit White 2026 GMC Sierra 1500 AT4Summit White 2026 GMC Sierra 1500 AT4

    $66,670

    Est. $1,154/mo

    Starling Chevrolet GMC

    4.9
    Saint Cloud, FL (2 mi)
    Check Availability
    Quick view
  • Dune 2026 GMC Sierra 1500 AT4

    $72,741

    MSRP $74,755

    Est. $1,259/mo

    Fountain Buick GMC

    4.6
    Orlando, FL (16 mi)
    Check Availability

    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

    $94,458

    MSRP $75,650

    Est. $1,635/mo

    Fountain Buick GMC

    4.6
    Orlando, FL (16 mi)
    Check Availability
    Quick view
  • Summit White 2026 GMC Sierra 1500 AT4Summit White 2026 GMC Sierra 1500 AT4Summit White 2026 GMC Sierra 1500 AT4Summit White 2026 GMC Sierra 1500 AT4

    $66,920

    Est. $1,159/mo

    Starling Chevrolet GMC

    4.9
    Saint Cloud, FL (2 mi)
    Check Availability
    Quick view
  • Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4Coastal Dune 2026 GMC Sierra 1500 AT4

    $69,749

    $2.2K
    Est. $1,208/mo

    Starling Chevrolet GMC

    4.9
    Saint Cloud, FL (2 mi)
    Check Availability
    Quick view
  • 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

    $90,936

    $3.2K

    MSRP $104,950

    Est. $1,574/mo

    Fountain Buick GMC

    4.6
    Orlando, FL (16 mi)
    Check Availability
    Quick view
  • 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

    $70,091

    $6.7K
    Est. $1,213/mo

    Orange Buick GMC

    4.4
    Orlando, FL (23 mi)
    Check Availability
    Quick view
  • Onyx Black 2026 GMC Sierra 1500 AT4

    $72,741

    MSRP $74,755

    Est. $1,259/mo

    Fountain Buick GMC

    4.6
    Orlando, FL (16 mi)
    Check Availability

    Quick view
  • 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

    $69,716

    Est. $1,207/mo

    Orange Buick GMC

    4.4
    Orlando, FL (23 mi)
    Check Availability
    Quick view
  • 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

    $69,701

    $4.7K
    Est. $1,207/mo

    Orange Buick GMC

    4.4
    Orlando, FL (23 mi)
    Check Availability
    Quick view
  • 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

    $70,091

    $6.7K
    Est. $1,213/mo

    Orange Buick GMC

    4.4
    Orlando, FL (23 mi)
    Check Availability
    Quick view
  • 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

    $71,186

    $4.7K
    Est. $1,232/mo

    Orange Buick GMC

    4.4
    Orlando, FL (23 mi)
    Check Availability
    Quick view
  • 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

    $67,894

    Est. $1,175/mo

    Impex Chevrolet GMC

    4.7
    $646 delivery from Reidsville, NC (567 mi)
    Check Availability
    Quick view
  • Summit White 2026 GMC Sierra 1500 AT4

    $70,871

    $3.2K

    MSRP $72,885

    Est. $1,227/mo

    Fountain Buick GMC

    4.6
    Orlando, FL (16 mi)
    Check Availability

    Quick view
  • 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

    $60,541

    Est. $1,048/mo

    Laura Buick GMC

    4.5
    $1,757 delivery from Collinsville, IL (879 mi)
    Check Availability
    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 (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)
Skip to Listings
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