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  • Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4

    $83,354

    MSRP $90,855

    Est. $1,535/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4

    $83,354

    MSRP $90,855

    Est. $1,535/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4

    $79,854

    MSRP $90,855

    Est. $1,470/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4

    $81,854

    MSRP $90,855

    Est. $1,507/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4

    $80,854

    MSRP $90,855

    Est. $1,489/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4

    $90,854

    MSRP $90,855

    Est. $1,673/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4

    $79,854

    MSRP $90,855

    Est. $1,470/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4

    $81,764

    MSRP $89,265

    Est. $1,506/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4

    $77,854

    $2K

    MSRP $90,855

    Est. $1,434/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4

    $88,854

    $2K

    MSRP $90,855

    Est. $1,636/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4

    $82,854

    MSRP $90,855

    Est. $1,526/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4

    $82,854

    MSRP $90,855

    Est. $1,526/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4

    $88,064

    $2K

    MSRP $90,065

    Est. $1,622/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4

    $88,359

    $2K

    MSRP $90,360

    Est. $1,627/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4

    $81,854

    MSRP $90,855

    Est. $1,507/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4

    $79,854

    MSRP $90,855

    Est. $1,470/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Sterling Metallic 2026 GMC Sierra 2500 AT4

    $90,854

    MSRP $90,855

    Est. $1,673/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Coastal Dune 2026 GMC Sierra 2500 AT4

    $82,159

    MSRP $81,160

    Est. $1,513/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Summit White 2026 GMC Sierra 2500 AT4

    $90,359

    MSRP $90,360

    Est. $1,664/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Summit White 2026 GMC Sierra 2500 AT4

    $82,359

    MSRP $90,360

    Est. $1,516/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Summit White 2026 GMC Sierra 2500 AT4

    $91,659

    MSRP $90,660

    Est. $1,688/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Sterling Metallic 2026 GMC Sierra 2500 AT4

    $83,059

    MSRP $90,560

    Est. $1,529/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Summit White 2026 GMC Sierra 2500 AT4

    $91,364

    MSRP $90,365

    Est. $1,682/mo

    Integrity Buick GMC Cadillac

    2.2
    Chattanooga, TN (10 mi)
    Check Availability
  • Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4

    $74,535

    $2K

    MSRP $90,000

    Est. $1,372/mo

    VanGuard GMC

    4.7
    $977 delivery from Sherman, TX (652 mi)
    Check Availability
  • Volcanic Red 2026 GMC Sierra 2500 AT4Volcanic Red 2026 GMC Sierra 2500 AT4Volcanic Red 2026 GMC Sierra 2500 AT4Volcanic Red 2026 GMC Sierra 2500 AT4Volcanic Red 2026 GMC Sierra 2500 AT4Volcanic Red 2026 GMC Sierra 2500 AT4

    $69,284

    Est. $1,276/mo

    Laura Buick GMC

    4.5
    $735 delivery from Collinsville, IL (368 mi)
    Check Availability
  • Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4

    $73,659

    $6K

    MSRP $79,060

    Est. $1,356/mo

    Stan McNabb Chevrolet Buick GMC Cadillac

    4.2
    Tullahoma, TN (62 mi)
    Check Availability
  • Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4

    $70,659

    $5K

    MSRP $79,060

    Est. $1,301/mo

    Stan McNabb Chevrolet Buick GMC Cadillac

    4.2
    Tullahoma, TN (62 mi)
    Check Availability
  • Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4Sterling 2026 GMC Sierra 2500 AT4

    $87,140

    $2K
    Est. $1,604/mo

    Dave Kirk Chevy GMC

    4.6
    Crossville, TN (73 mi)
    Check Availability
  • Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4

    $81,143

    $2K
    Est. $1,494/mo

    Dave Kirk Chevy GMC

    4.6
    Crossville, TN (73 mi)
    Check Availability
  • Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4

    $87,075

    $2K
    Est. $1,603/mo

    Dave Kirk Chevy GMC

    4.6
    Crossville, TN (73 mi)
    Check Availability
  • Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4

    $74,554

    MSRP $79,955

    Est. $1,373/mo

    Stan McNabb Chevrolet Buick GMC Cadillac

    4.2
    Tullahoma, TN (62 mi)
    Check Availability
  • Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4

    $83,204

    $6K

    MSRP $91,605

    Est. $1,532/mo

    Stan McNabb Chevrolet Buick GMC Cadillac

    4.2
    Tullahoma, TN (62 mi)
    Check Availability
  • Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4Summit White 2026 GMC Sierra 2500 AT4

    $91,283

    Est. $1,681/mo

    Don Ledford Automotive

    4.7
    Cleveland, TN (31 mi)
    Check Availability
  • Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4

    $93,179

    Est. $1,716/mo

    Don Ledford Automotive

    4.7
    Cleveland, TN (31 mi)
    Check Availability
  • Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4Coastal Dune 2026 GMC Sierra 2500 AT4

    $86,148

    MSRP $90,450

    Est. $1,586/mo

    Valley Chevrolet GMC

    2.5
    Fayetteville, TN (74 mi)
    Check Availability
  • Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4Onyx Black 2026 GMC Sierra 2500 AT4

    $84,553

    MSRP $89,855

    Est. $1,557/mo

    Valley Chevrolet GMC

    2.5
    Fayetteville, TN (74 mi)
    Check Availability
  • Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4Sterling Metallic 2026 GMC Sierra 2500 AT4

    $84,583

    MSRP $89,855

    Est. $1,557/mo

    Valley Chevrolet GMC

    2.5
    Fayetteville, TN (74 mi)
    Check Availability

About the 2026 GMC Sierra 2500 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 2500 AT4
FAQs

How much does the 2026 GMC Sierra 2500 AT4 cost?

The 2026 GMC Sierra 2500 AT4 price depends on optional features. Prices typically start at $72,500.

What are some similar vehicles and competitors of the 2026 GMC Sierra 2500 AT4?

The 2026 GMC Sierra 2500 AT4 compares to and/or competes against the following vehicles:


Trims

AT4 (2 styles)

Style
4WD Crew Cab 159" AT4 4WD Crew Cab 172" AT4
Inventory price
Starting at $72,500 Starting at $72,700
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)

2026 GMC Sierra 2500 AT4 by city