NEW 2027 GMC SIERRA
HEAVY DUTY

ANTICIPATED AVAILABILITY LATE 2026

Preproduction models shown with available features and accessories throughout. Actual production models may vary.
Two 2027 GMC Sierra HD Trucks, One Black and One Red, with Off-Road Tires and Red Recovery Hooks Parked Side By Side On a Rocky Terrain with Snowy Mountains in the Background

THE MOST ADVANCED AND CAPABLE SIERRA HD LINEUP EVER

Best-in-class* available diesel horsepower, unsurpassed torque, advanced trailering tech, first-class comfort, and segment-first* electric power steering and eBoost braking.
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A Black 2027 GMC Sierra HD Truck Kicks Up Dust As It Drives On a Dirt Path Through Dry Grass Fields with Rolling Hills and a Cloudy Sky

IMPRESSIVE POWER

The new available Duramax® 8.3L Turbo-Diesel engine, enhanced 6.6L V8 gas engine, and new steering and braking systems help inspire confident adventures.

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A Black 2027 GMC Sierra HD Truck Drives On a Paved Road, Towing a Silver Horse Trailer in a Rocky Desert Landscape with Mountains in the Background

MORE TOWING MUSCLE

With the new available Duramax 8.3L Turbo-Diesel engine, the 2027 Sierra HD delivers a max towing capacity of up to 17,236 kg (38,000 lb)* – making it the strongest Sierra HD truck yet.

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A White 2027 GMC Sierra HD Dually Truck Drives On a Paved Road Towing a Large Black and White Fifth-Wheel RV in a Desert Mountain Setting

SEGMENT-FIRST* ELECTRIC POWER STEERING

Large front brakes, improved braking mechanics and segment-first* rack and pinion electric power steering help create an extremely precise, responsive drive.

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A Dark Gray 2027 GMC Sierra HD Truck with Red Recovery Hooks and Off-Road Tires Is Parked On a Rocky Desert Landscape, Towing a Small White Adventure Trailer

SEGMENT-FIRST* eBOOST BRAKING

The 2027 Sierra HD is the first truck in its class* to feature eBoost – designed to help provide a firm brake response while driving downhill, reduce trailering stopping distances and more.

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A White GMC Sierra HD AT4X Truck Pulling a Trailer and Off-Roading in a Rocky Desert with Mountains

INTELLIGENT TRAILERING TECH

The available ProGrade® Trailering System,* Adaptive Cruise Control* with trailering capability* and up to 14 available camera views* work together to create a smart towing experience.

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The Interior Dashboard of a 2027 GMC Sierra HD Showing a Large Infotainment Screen Displaying a Trailer Camera View On a Winding Road
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THE MOST POWERFUL GMC ENGINES YET

From the new available Duramax 8.3L Turbo-Diesel engine’s class-leading horsepower* to the enhanced 6.6L V8 gas engine, Sierra HD is engineered for pulling strength, confident power and precision control.
  • 2027 Sierra HD Diesel Engine.
  • 2027 Sierra HD Gas Engine.

  • Max towing capacity of up to 17,236 kg (38,000 lb)* and class-leading* 555 horsepower.

  • Max towing capacity of 8,618 kg (19,000 lb)* and 412 horsepower.

“GM’s HD Trucks Look to Stomp On the Competition with Massive 8.3L Diesel Engine”

- AutoTrader
READ MORE

“GM stuffs 8.3L V8 Duramax into Oshawa-built heavy-duty trucks”

- Driving
READ MORE
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AN UNDENIABLY BOLD PRESENCE

Signature GMC grilles, LED projector headlamps and strong, squared-off lines give Sierra HD an unmistakable look on every road.
A Close-Up of the Chrome GMC Logo On a Dark Grille with Horizontal Bars, Showing a Camera Below the Badge
A Front View of a Gray GMC Sierra HD Denali Pickup Truck Parked on a Dirt Road with Mountains
A Black GMC Sierra HD AT4X Truck Pulling a Large Box Trailer on a Dirt Road
A White 2027 GMC Sierra HD AT4X Pulling a White Trailer on a Rocky Dirt Road

CHOOSE YOUR COLOUR

Use the tabs to view available trims, exterior and interior colours and wheels.

    HARD-WORKING AMENITIES

    Take on the world with premium materials, available best-in-class* 16-way power front seats with a massage feature, an available 12-Speaker Bose®* Premium Series audio system and more.
    • The Interior of a 2027 GMC Sierra HD with Brown Leather Seats and a Modern House in the Background
      A Close-Up of a Brown Leather GMC Sierra HD Ultimate Trim Seat with a Topographic Pattern
      A Close-Up of the Brown Leather Upholstery with Stitching and Perforations in a GMC Sierra HD Seat
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    • The Full Interior of a 2027 GMC Sierra HD with Brown Leather Seats and a View of a Desert
      The Denali Trim Name Embroidered in Gold on a Brown Leather Seat of a GMC Sierra HD
      A Close-Up of the Brown Wood Trim and Air Vent on the Dashboard of a GMC Sierra HD
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    • The Interior Dashboard and Steering Wheel of a 2027 GMC Sierra HD Overlooking Mountains
      Close-Up of the Black Interior Door Panel of a GMC Sierra HD with Red Stitching
      The Interior of a GMC Sierra HD AT4X Truck Showing Black Leather Seats with a Sunroof and Rocky Landscape
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    • The Interior Dashboard of a GMC Sierra HD AT4X Truck with the Steering Wheel and Infotainment Screen Displaying a Map
      A Close-Up of a Black Leather GMC Sierra HD AT4X Seat Headrest with an Embossed AT4X Logo and Orange Stitching
      A Close-Up of the Interior Door Panel of a GMC Sierra HD AT4X Truck with a Chrome Handle and Wood-Grain Trim
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    THE OFF-ROAD HERO

    2027 SIERRA HD AT4X is engineered to triumph over rough terrain with advanced driver modes, larger DSSV dampers than last year’s model and a lifted suspension.
    An Interior View of the 2027 GMC Sierra HD Infotainment Screen Showing a Trailer Camera View with a Hand Interacting with the Display
    An Interior View of the 2027 GMC Sierra HD Dashboard with Hands on the Steering Wheel and a Digital Instrument Cluster Showing Navigation

    DIGITAL DISPLAYS

    The available 13.4" diagonal Premium GMC Infotainment System,* available 12.3" diagonal Driver Information Centre and available 15" diagonal multicolour Head-Up Display put important information front and centre.

    THE OFF-ROAD HERO

    2027 SIERRA HD AT4X is engineered to triumph over rough terrain with advanced driver modes, larger DSSV dampers than last year’s model and a lifted suspension.

    A COMMANDING OFF-ROAD EXPERIENCE

    The 2027 Sierra HD AT4X is engineered for masterful control over rough terrain with advanced drive modes, large Multimatic® DSSV dampers and a 38 mm (1.5") lifted suspension.

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    A Dark Gray 2027 GMC Sierra HD AT4X Parked on a Grassy Hill with Mountains under a Cloudy Sky

    TERRAIN MODE

    Debuting for the first time on Sierra HD AT4X, Terrain Mode adjusts your vehicle’s shift mapping and traction control, and it adds automatic braking to maximize performance for low-speed manoeuvres on uneven surfaces.

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    A Red 2027 GMC Sierra HD AT4X Driving through a Rocky Desert Landscape

    MULTIMATIC DSSV DAMPERS WITH A 38 MM (1.5") LIFTED SUSPENSION

    The high-performance dampers have large pistons designed to help you stay composed over washboards, rocks or rolling bumps, inspiring more confident handling in rugged off-road situations.

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    2026 Sierra HD shown.

    2026 Sierra HD shown.

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    A Close-up View of a Yellow Multimatic DSSV Shock Absorber next to a Tire
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    EXPLORE SIERRA HD TRIMS

    A Front View of the White 2027 GMC Sierra HD Pro

    PRO

    • 6.6L V8 gas engine with Allison® 10-speed automatic transmission
    • Adaptive Cruise Control* with trailering capability*
    • Trailering Package, Trailering Mirrors and Trailer Brake Controller
    A Front View of the Black 2027 GMC Sierra HD SLE

    SLE

    • 13.4" diagonal centre touchscreen and 12.3" diagonal digital Driver Information Centre
    • Traction Select System with Tow/Haul mode*
    • 18" machined aluminum wheels
    A Front View of the White 2027 GMC Sierra HD SLT

    SLT

    • Available 10-way power-adjustable, heated and ventilated front bucket seats with perforated leather appointments
    • Heated steering wheel
    • ProGrade® Trailering System* with In-Vehicle Trailering App*
    A Front View of the White 2027 GMC Sierra HD AT4

    AT4

    • Exclusive Jet Black interior with Kalahari accents, and heated and ventilated perforated front leather seating surfaces
    • Exclusive 20" Gloss Black aluminum wheels with available BFGoodrich® All-Terrain tires
    • Off-Road Suspension Package with twin-tube shocks and skid plates
    A Front View of the Red 2027 GMC Sierra HD AT4X

    AT4X*

    • Factory-installed 38 mm (1.5") suspension lift, Multimatic DSSV dampers, rear electronic-locking differential, large steel transfer case skid plate and front aluminum skid plate
    • 35" MT tires
    • 16-way heated and ventilated power front seats with massage feature
    A Front View of the Blue 2027 GMC Sierra HD Denali

    DENALI

    • 20" Ultra-Bright machined aluminum wheels with bright chrome inserts*
    • Denali-exclusive authentic wood, patterned aluminum trim and Forge perforated leather seating surfaces
    • 12-way heated and ventilated power front seats
    A Front View of the Dark Gray 2027 GMC Sierra HD Denali Ultimate

    DENALI ULTIMATE

    • Duramax 8.3L Turbo-Diesel V8 engine with Allison 10-speed automatic transmission
    • Signature Vader Chrome grille and exclusive 20" Ultra-Bright machined aluminum wheels with Gloss Black inserts*
    • Exclusive Alpine Umber interior featuring full-grain leather seating, authentic Paldao wood and 16-way power front seats with massage feature
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    SIERRA 2500 HD AT4 AS CONFIGURED:  {{as_shown_price}}{{as_shown_price_disclosure}}

    SIERRA 3500 HD DENALI AS CONFIGURED:  {{as_shown_price}}{{as_shown_price_disclosure}}

    SIERRA 2500 HD DENALI ULTIMATE AS CONFIGURED:  {{as_shown_price}}{{as_shown_price_disclosure}}
    A White GMC Sierra HD AT4, a Dark Gray GMC Sierra HD Denali, and a Black GMC Sierra HD Denali Ultimate on a Road with Sand Dunes

    SIERRA 2500 HD AT4 AS CONFIGURED:  {{as_shown_price}}{{as_shown_price_disclosure}}

    SIERRA 3500 HD DENALI AS CONFIGURED:  {{as_shown_price}}{{as_shown_price_disclosure}}

    SIERRA 2500 HD DENALI ULTIMATE AS CONFIGURED:  {{as_shown_price}}{{as_shown_price_disclosure}}

    2026 GMC SIERRA HD

    Starting at: {{starting_price}}{{starting_price_disclosure}}

    Available max towing: up to 16,329 kg (36,000 lbs.)*
    • 6.6L V8 gas engine with Allison 10-speed automatic transmission
    • Trailering Package, Trailering Mirrors and Trailer Brake Controller
    • Best-in-class HD cargo bed volume*
     VEHICLE DETAILS VIEW INVENTORY

    FAQs

    When will the 2027 GMC Sierra HD be released?

    The 2027 GMC Sierra HD is expected to be available in late 2026.

    Will the 2027 GMC Sierra HD have any upgrades?

    Yes, the 2027 GMC Sierra HD includes a new available Duramax Turbo-Diesel engine with class-leading* horsepower, segment-first* electric power steering, enhancements to the V8 gas engine and segment-first* eBoost braking.

    What is the towing capacity of the 2027 GMC Sierra HD?

    2027 Sierra HD 2500 max available towing capacity: 10,477 kg (23,100 lb)*
     
    2027 Sierra HD 3500 max available towing capacity: 17,236 kg (38,000 lb)*

    What engines will the 2027 GMC Sierra HD have?

    The 2027 GMC Sierra HD will feature an enhanced 6.6L V8 gas engine and a new available Duramax 8.3L Turbo-Diesel engine.

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