2026 GMC Sierra HD

2026 GMC
Sierra HD

People who need a serious truck can count on the GMC Sierra HD 2500 and 3500 to get the big jobs done. While their brawn and capability remain the same, there are a few aesthetic additions for 2026. GMC has added the Black Badging Package to outfit all but the base trim with black GMC emblems and lettering, while Coastal Dune and Glacier White Tricoat exterior paint join the palette. The Sierra HD continues to balance jobsite capability with the level of comfort that GMC is known for. Even the entry-level Pro offers amenities typically reserved for higher grades, such as wireless smartphone connectivity and LED lighting, while the top-of-the-line Denali Ultimate takes things to a luxurious extreme with its full-grain leather interior with massaging front seats. The best-in-class 83.5 cubic feet of bed cargo volume adds practical appeal, and a wide range of packages makes it possible for every buyer to tailor the Sierra HD toward more ruggedness or sophistication.

How we describe this model: capable, high-comfort, rugged, roomy, ready for anything

Shop this vehicle against: Chevrolet Silverado HD, Ford Super Duty, Ram HD

Sierra HD Highlights

  • cab configurations: Regular Cab (three seats), Crew Cab (five or six seats), or Double Cab (six seats)
  • bed configurations: standard (82.25-inch) or long (98.27-inch)
  • fully boxed steel frame
  • external engine oil and auxiliary transmission oil coolers
  • available dual rear wheels (3500 only)

Shop GMC Sierra HD

Sierra HD Powertrain

  • standard 6.6-liter V8 gasoline engine (output: 401 hp and 464 lb.-ft. of torque)
  • available 6.6-liter V8 Duramax turbo-diesel engine (output: 470 hp and 975 lb.-ft. of torque)
  • standard rear-wheel drive (RWD), available four-wheel drive (4WD)
  • Allison 10-speed automatic transmission with available integrated Power Take-Off
  • standard automatic locking rear differential, available electronic locking rear differential
  • standard 4WD electronic 2-speed transfer case, available Autotrac 2-speed transfer case
  • standard 720 cold-cranking amps battery, available 1,460 cold-cranking amps battery
  • standard 170-amp alternator, available 220-amp alternator
  • Tow/Haul Mode and integrated trailer brake controller
  • available (with Duramax engine) engine block heater and diesel exhaust brake
  • 2500 maximum tow rating: 22,390 pounds (Duramax turbo-diesel, Regular Cab/Long Bed, RWD, Max Trailering Package, and Gooseneck/5th-Wheel Prep Package)
  • 3500 maximum tow rating: 36,000 pounds (Duramax turbo-diesel, Regular Cab/Long Bed, RWD, dual rear wheel, Max Trailering Package, and Gooseneck/5th-Wheel Prep Package)
  • 2500 payload capacity: 4,025 pounds
  • 3500 payload capacity: 5,140 pounds

Pro Interior

vinyl upholstery, 40/20/40-split front bench seat with under-seat storage, 3.5-inch digital driver information display with analog gauges, push-button start, single-zone manual climate control with heavy-duty air filter (Double Cab and Crew Cab models add rear air vents), dual front-mounted USB ports, 12-volt auxiliary power outlet, manual day/night rearview mirror, express-up/down driver window, express-down front passenger window, 60/40-split fold-up rear bench seat (Double Cab and Crew Cab only)

Pro Exterior

keyless entry, LED lighting (animated projector headlights, daytime running lights, side-view mirror-mounted turn indicators, tail lights), power-adjustable vertical trailering side-view mirrors with heated upper glass and convex lower glass, cab-mounted bed lights, solar-absorbing glass, roll-formed high-strength steel bed with 12 cargo tie-downs (rated to 500 pounds), CornerStep rear bumper, side BedStep, trailer hitch platform with 2.5-inch receiver hitch, 4-pin and 7-pin wire harness and connectors, dual black frame-mounted front recovery hooks, capless fuel filler (gas engine only), chrome bumpers, chrome grille with black insert bars, black beltline molding, 17-inch steel wheels (2500) or 18-inch steel wheels (3500)

Pro Safety

Sierra HD Pro Safety (automatic emergency braking, front pedestrian braking, forward collision alert, following distance indicator, lane departure warning, Buckle-to-Drive, Intellibeam automatic high beams), Teen Driver technology, hitch guidance, tire pressure monitor with tire fill alert, brake-pad wear indicator, StabiliTrak stability and traction control, HD rear vision camera, rear seat reminder and rear seat belt indicator (Double Cab and Crew Cab only)

Pro Infotainment

GMC Infotainment System with 7-inch touchscreen, wireless Android Auto and Apple CarPlay, Bluetooth hands-free phone and audio streaming, Wi-Fi hotspot, two speakers (Regular Cab) or six speakers (Double Cab and Crew Cab), OnStar Basics (real-time traffic and navigation, remote commands, voice assistance, automatic crash response)

Pro Major Options

Pro Convenience Package (EZ Lift assist tailgate with power-lock/release, LED bed lighting, rear window defogger, tinted glass), X31 Off-Road Package (off-road suspension with Rancho twin-tube shocks, underbody skid plates, hill descent control, exclusive badging), Black Badging Package (black badging, emblems, and nameplates), Snow Plow Prep/Camper Package (roof light power feed, single 220-amp alternator, heavy-duty front springs, underbody skid plates), Max Trailering Package (3500 HD frame, 3500 HD leaf springs, 3500 HD Shock Package, 12-inch rear axle, Gooseneck/5th Wheel Prep provisions, bed stamped holes with caps installed), Gooseneck Hitch Package (gooseneck ball, chain tie-down)

SLE

Contents of Pro plus:

  • cloth upholstery
  • wrapped steering wheel
  • 12.3-inch digital instrument cluster
  • GMC Premium Infotainment System with Google built-in and 13.4-inch touchscreen
  • voice recognition
  • SiriusXM with 360L
  • second-row USB ports (four total)
  • EZ Lift assist tailgate with power-lock/release
  • two 120-volt power outlets (instrument panel, bed)
  • deep-tinted glass
  • chrome grille with chrome insert bars
  • chrome beltline molding (2500) or stainless-steel beltline molding (3500)
  • 17-inch machined aluminum wheels (2500) or 18-inch machined aluminum wheels (3500)
  • eligible for: SLE Convenience Package (10-way power-adjustable driver’s seat with lumbar support, dual-zone automatic climate control, LED fog lights, LED Smoked Amber roof marker lights), SLE Preferred Package (hitch guidance with hitch view, in-vehicle trailering app, adaptive cruise control, LED bed lighting; Double Cab and Crew Cab add universal home remote, power-sliding rear window), Sierra HD Pro Safety Plus Package (trailer side blind-zone alert, rear cross-traffic alert, front and rear park assist, in-vehicle trailering app, safety alert seat; Double Cab and Crew Cab add trailer camera provisions, bed-view camera, HD surround vision), Heat Package (heated outboard front seats, heated steering wheel), Remote Start Package (remote start, theft-deterrent alarm, rear window defogger)

SLT

Contents of SLE plus:

  • perforated leather upholstery
  • memory driver’s seat
  • 10-way power-adjustable front seats with lumbar support
  • heated outboard front seats
  • wrapped heated steering wheel
  • dual-zone automatic climate control with rear vents
  • auto-dimming rearview mirror
  • up-level rear under-seat storage
  • express-up/down front windows
  • rear window defogger
  • remote start
  • signature LED daytime running lights
  • animated LED signature taillights with stop and reverse lights
  • power-folding/extending side-view mirrors with auto-dimming upper glass
  • side-view mirror-mounted turn indicators, puddle lights, and perimeter lighting
  • LED bed lighting
  • in-vehicle trailering app
  • hitch guidance with hitch view
  • theft-deterrent alarm
  • rear wheelhouse liners
  • chrome mirror caps
  • 18-inch machined aluminum wheels with Dark Grey metallic accents (2500, 3500)
  • eligible for Assist Step and Floor Liner Package (all-weather floor liners, 6-inch rectangular or 4-inch round chrome assist steps), SLT Convenience Package (heated/ventilated front bucket seats with center console [five-seater], wireless smartphone charging, 7-speaker Bose audio with Richbass woofer, console-mounted USB ports [six total], LED Smoked Amber roof marker lights), SLT Preferred Package (heated outboard rear seats, universal home remote, power-sliding rear window, adaptive cruise control)

AT4

Contents of SLT plus:

  • front bucket seats with center console (five-seater)
  • heated/ventilated front seats
  • heated outboard rear seats
  • wireless smartphone charging
  • console-mounted USB ports (six total)
  • 7-speaker Bose audio with Richbass woofer
  • off-road suspension with Rancho twin-tube shocks
  • underbody skid plates
  • LED fog lights
  • six-function GMC MultiPro Tailgate with EZ Lift assist and power-lock/release
  • Gloss-Black grille with black chrome accents
  • adaptive cruise control
  • hill descent control
  • front and rear parking assist
  • rear cross-traffic alert
  • trailer side blind-zone alert
  • safety alert seat
  • HD Surround Vision
  • bed-view camera
  • dual red frame-mounted front recovery hooks
  • body-color bumpers
  • premium floor liners with removable carpet inserts
  • Gloss-Black mirror caps
  • black beltline molding
  • spray-on bedliner
  • 20-inch high-gloss black-painted aluminum wheels with all-terrain tires (2500, 3500)
  • eligible for AT4 Preferred Package (universal home remote, power-sliding rear window, LED Smoked Amber roof marker lights), Technology Package (AT4 Preferred Package, digital rearview mirror, 15-inch head-up display), AT4 Premium Plus Package (AT4 Preferred Package, Technology Package, power sunroof, off-road high-clearance steps)

AT4X (2500 only)

Contents of AT4 plus:

  • off-road suspension with 1.5-inch factory-installed lift and Multimatic DSSV dampers
  • power-retractable black assist steps with LED perimeter lighting
  • full-grain leather upholstery
  • 16-way power-adjustable front seats with lumbar support and massage settings
  • leather-wrapped heated steering wheel
  • 15-inch head-up display
  • power sunroof
  • digital rearview mirror
  • power-sliding rear window with defogger
  • 12-speaker Bose Premium Series audio with CenterPoint
  • MultiPro tailgate audio by Kicker
  • LED Smoked Amber roof marker lights
  • aluminum front skid plates
  • steel skid plates for transfer case
  • trailer tire pressure and temperature sensors
  • Gloss Black grille and insert bars with Dark Nickel inserts
  • 18-inch machined aluminum wheels with high-gloss black accents and 35-inch Goodyear Territory MT tires
  • eligible for AEV (American Expedition Vehicles) Edition (AEV-stamped steel bumpers with heavy-duty cast recovery points, AEV-stamped steel front/steering gear/transfer case skid plates, 18-inch Salta Black Gloss AEV aluminum wheels, full-sized spare wheel, AEV-branded floor liners, interior and exterior AEV badging, Gloss-Black exterior accents)

Denali

Contents of AT4 plus:

  • forge-perforated leather upholstery
  • 12-way power-adjustable front seats with lumbar support
  • power-sliding rear window with defogger
  • universal home remote
  • 6-inch chrome rectangular assist steps
  • dual chrome frame-mounted front recovery hooks
  • LED Smoked Amber roof marker lights
  • carpeted floor mats
  • Denali signature chrome grille
  • chrome beltline molding
  • chrome mirror caps
  • polished exhaust tip (gasoline engine only)
  • 20-inch Ultra Bright-finished aluminum wheels with chrome inserts (2500, 3500)
  • eligible for Denali Reserve Package (Technology Package, power sunroof), Denali Illumination Package (red illuminated front GMC emblem, puddle lights with GMC emblem, illuminated door sills)

Denali Ultimate

Contents of Denali plus:

  • full-grain leather upholstery
  • 16-way power-adjustable front seats with lumbar support and massage settings
  • leather-wrapped heated steering wheel
  • 15-inch head-up display
  • power sunroof
  • 12-speaker Bose Premium Series audio with CenterPoint
  • MultiPro tailgate audio by Kicker
  • black power-retractable assist steps with LED perimeter lighting
  • underbody skid plates
  • Denali Ultimate signature Vader chrome grille with high-gloss black surround
  • chrome beltline molding
  • chrome mirror caps
  • dual chrome frame-mounted front recovery hooks
  • winter grille cover
  • 20-inch Ultra Bright-finished aluminum wheels with Gloss-Black inserts (2500, 3500)

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The Manufacturer's Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.