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  • Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4

    $83,946

    MSRP $92,489

    Est. $1,531/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)

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  • Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4

    $83,740

    MSRP $92,259

    Est. $1,528/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)

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  • Sterling 2026 GMC Sierra 3500 AT4Sterling 2026 GMC Sierra 3500 AT4Sterling 2026 GMC Sierra 3500 AT4

    $87,079

    Est. $1,589/mo

    Huston Cadillac GMC

    4.9
    Check Availability
    Lake Wales, FL (20 mi)
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  • Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4

    $83,946

    MSRP $92,489

    Est. $1,531/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)
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  • Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4

    $83,503

    MSRP $91,994

    Est. $1,523/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)
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  • Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4

    $83,297

    MSRP $91,764

    Est. $1,520/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)
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  • Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4

    $82,095

    MSRP $90,415

    Est. $1,498/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)
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  • Coastal Dune 2026 GMC Sierra 3500 AT4

    $83,946

    MSRP $92,489

    Est. $1,531/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)

    Quick view
  • Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4

    $84,130

    MSRP $92,689

    Est. $1,535/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)
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  • Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4

    $83,503

    MSRP $91,994

    Est. $1,523/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)
    Quick view
  • Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4

    $83,946

    MSRP $92,489

    Est. $1,531/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)
    Quick view
  • Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4

    $83,946

    MSRP $92,489

    Est. $1,531/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)
    Quick view
  • Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4

    $83,946

    MSRP $92,489

    Est. $1,531/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)
    Quick view
  • Sterling Metallic 2026 GMC Sierra 3500 AT4

    $83,946

    MSRP $92,489

    Est. $1,531/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)

    Quick view
  • Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4

    $83,946

    MSRP $92,489

    Est. $1,531/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)
    Quick view
  • Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4

    $83,740

    MSRP $92,259

    Est. $1,528/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)
    Quick view
  • Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4

    $83,687

    MSRP $92,194

    Est. $1,527/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)
    Quick view
  • Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4

    $83,297

    MSRP $91,764

    Est. $1,520/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)
    Quick view
  • Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4Summit White 2026 GMC Sierra 3500 AT4

    $83,503

    MSRP $91,994

    Est. $1,523/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)
    Quick view
  • Volcanic Red Tintcoat 2026 GMC Sierra 3500 AT4Volcanic Red Tintcoat 2026 GMC Sierra 3500 AT4Volcanic Red Tintcoat 2026 GMC Sierra 3500 AT4Volcanic Red Tintcoat 2026 GMC Sierra 3500 AT4Volcanic Red Tintcoat 2026 GMC Sierra 3500 AT4Volcanic Red Tintcoat 2026 GMC Sierra 3500 AT4

    $84,080

    MSRP $92,639

    Est. $1,534/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)

    Quick view
  • Sterling 2026 GMC Sierra 3500 AT4Sterling 2026 GMC Sierra 3500 AT4Sterling 2026 GMC Sierra 3500 AT4Sterling 2026 GMC Sierra 3500 AT4Sterling 2026 GMC Sierra 3500 AT4Sterling 2026 GMC Sierra 3500 AT4

    $87,079

    Est. $1,589/mo

    Huston Cadillac GMC

    4.9
    Check Availability
    Lake Wales, FL (20 mi)
    Quick view
  • Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4Sterling Metallic 2026 GMC Sierra 3500 AT4

    $83,946

    MSRP $92,489

    Est. $1,531/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)
    Quick view
  • Titanium Rush Metallic 2026 GMC Sierra 3500 AT4Titanium Rush Metallic 2026 GMC Sierra 3500 AT4Titanium Rush Metallic 2026 GMC Sierra 3500 AT4Titanium Rush Metallic 2026 GMC Sierra 3500 AT4Titanium Rush Metallic 2026 GMC Sierra 3500 AT4Titanium Rush Metallic 2026 GMC Sierra 3500 AT4

    $87,079

    Est. $1,589/mo

    Huston Cadillac GMC

    4.9
    Check Availability
    Lake Wales, FL (20 mi)
    Quick view
  • Summit White 2026 GMC Sierra 3500 AT4

    $82,608

    MSRP $90,994

    Est. $1,507/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)
    Quick view
  • Coastal Dune 2026 GMC Sierra 3500 AT4

    $83,946

    MSRP $92,489

    Est. $1,531/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)
    Quick view
  • Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4

    $83,740

    MSRP $92,259

    Est. $1,528/mo

    Rivard Buick GMC

    4.8
    Check Availability
    Tampa, FL (29 mi)

    Quick view
  • Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4Onyx Black 2026 GMC Sierra 3500 AT4

    $87,088

    Est. $1,589/mo

    Laura Buick GMC

    4.5
    Check Availability
    $1,743 delivery from Collinsville, IL (872 mi)
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  • Dune 2026 GMC Sierra 3500 AT4Dune 2026 GMC Sierra 3500 AT4Dune 2026 GMC Sierra 3500 AT4Dune 2026 GMC Sierra 3500 AT4Dune 2026 GMC Sierra 3500 AT4Dune 2026 GMC Sierra 3500 AT4

    $84,088

    Est. $1,534/mo

    Laura Buick GMC

    4.5
    Check Availability
    $1,743 delivery from Collinsville, IL (872 mi)
    Quick view

About the 2026 GMC Sierra 3500 AT4

Basics

AT4 shown.

Seating
5
Door count
4
Drivetrain
Four Wheel Drive
Combined MPG
0
Transmission
10-Speed A/T
Engine
470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)
Side view of the 2026 GMC Sierra 3500 AT4
FAQs

How much does the 2026 GMC Sierra 3500 AT4 cost?

The 2026 GMC Sierra 3500 AT4 price depends on optional features. Prices typically start at $73,400.

What are some similar vehicles and competitors of the 2026 GMC Sierra 3500 AT4?

The 2026 GMC Sierra 3500 AT4 compares to and/or competes against the following vehicles:


Is the 2026 GMC Sierra 3500 AT4 reliable?

The 2026 GMC Sierra 3500 has an average reliability rating of 5 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2026 Sierra 3500 owners.

Ratings (1 review)

Rating breakdown (out of 5):
Comfort
3.0
Interior
5.0
Performance
5.0
Value
3.0
Exterior
5.0
Reliability
5.0
Trims

AT4 (2 styles)

Style
4WD Crew Cab 159" AT4 4WD Crew Cab 172" AT4
Inventory price
Starting at $73,400 Starting at $73,600
Combined MPG
0 0
Engine
470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)
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2026 GMC Sierra 3500 AT4 by city

GMC Sierra 3500 trims