2026
2025

2025 SIERRA HEAVY DUTY 2025 SIERRA HEAVY DUTY

BUILD & PRICE

OVERVIEW
PRO, SLE & SLT
AT4 & AT4X
DENALI & DENALI ULTIMATE
SPECS
INVENTORY

OVERVIEW
PRO, SLE & SLT
AT4 & AT4X
DENALI & DENALI ULTIMATE
SPECS
INVENTORY

2025 GMC SIERRA HEAVY DUTY

2500 & 3500 HEAVY-DUTY PICKUP TRUCKS

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AT4X AS CONFIGURED: {{as_shown_price}}{{as_shown_price_disclosure}}

Two 2025 GMC Sierra HD Trucks Parked Side by Side with Mountains in the Background.

BUILD & PRICE

VIEW INVENTORY

PRO STARTING AT:

AVAILABLE TOW UP TO

16,329 KG (36,000 LBS.)^†

PRO STARTING AT:

AVAILABLE TOW UP TO

16,329 KG (36,000 LBS.)^†

PRO STARTING AT:

AVAILABLE TOW UP TO

16,329 KG (36,000 LBS.)^†

BUILD & PRICE

VIEW INVENTORY

KEY FEATURES

AVAILABLE

2500 CREW CAB MAX TOWING OF UP TO 9,920 KG (21,870 LBS.)^†

AVAILABLE

DURAMAX® 6.6L TURBO-DIESEL V8 ENGINE WITH 975 LB.-FT. OF TORQUE AND 470 HP

AVAILABLE

3500 MAX TOWING OF UP TO 16,329 KG (36,000 LBS.)^†

OFFERS THE MOST

TRAILERING-ASSISTANCE TECHNOLOGIES IN ITS CLASS^†

UP TO

14 AVAILABLE CAMERA VIEWS^† INCLUDING TRANSPARENT TRAILER VIEW^†

AVAILABLE BEST-IN-CLASS^†

16-WAY POWER FRONT SEATS WITH MASSAGE FEATURE

CURRENT OFFERS

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EXPLORE SIERRA HEAVY DUTY TRIMS

From the hardworking Pro and the well-equipped SLT to the off-road ready AT4 and the luxurious Denali Ultimate, there’s a GMC Sierra Heavy Duty trim ready to help you take on whatever lies ahead. Find yours below.

2025 Sierra HD 2500 Pro in Summit White.

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PRO

STARTING AT:

AVAILABLE TOW UP TO 16,329 KG (36,000 LBS.)^†

STANDARD FEATURES

6.6L V8 gas engine with Allison® 10-speed automatic transmission
Trailering Package, Trailering Mirrors and Trailer Brake Controller
Wireless Apple CarPlay®^† and wireless Android Auto™^† compatibility

 AVAILABLE FEATURES

Duramax 6.6L Turbo-Diesel V8 engine with Allison 10-speed automatic transmission
Adaptive Cruise Control^† with trailering^†

TRIM DETAILS BUILD & PRICE

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SLE

STARTING AT:

AVAILABLE TOW UP TO 16,102 KG (35,500 LBS.)^†

KEY FEATURES

13.4" diagonal centre touchscreen and 12.3" diagonal digital Driver Information Centre
Traction Select System with Tow/Haul mode^†
17" machined aluminum wheels (2500 SRW model)

 AVAILABLE FEATURES

Up to 13 camera views,^† including transparent trailer view^†
MultiPro™ Tailgate and MultiPro Tailgate Audio System by Kicker®
X31 off-road package with twin-tube Rancho® shocks and skid plates

TRIM DETAILS BUILD & PRICE

2025 Sierra HD 2500 SLT in Whitefrost Tricoat.

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SLT

STARTING AT:

AVAILABLE TOW UP TO 14,260 KG (31,440 LBS.)^†

KEY FEATURES

10-way power driver and front-passenger heated seats with lumbar
Heated steering wheel
ProGrade® Trailering System^† with In-Vehicle Trailering App^†
MultiPro Tailgate
18" machined aluminum wheels with dark grey metallic accents (SRW models only)

 AVAILABLE FEATURES

SLT Convenience Package, which includes heated and ventilated front bucket seats with perforated leather appointments, Bose^† premium audio system, wireless charging,^† 2 USB ports^† and LED roof marker lamps

TRIM DETAILS BUILD & PRICE

2025 Sierra HD 2500 AT4 in Summit White.

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AT4

STARTING AT:

AVAILABLE TOW UP TO 9,661 KG (21,300 LBS.)^†

KEY FEATURES

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® off-road tires
Off-Road Suspension Package with twin-tube Rancho shocks and skid plates
Up to 14 available camera views^† with HD Surround Vision^†
Adaptive Cruise Control^†

 AVAILABLE FEATURES

15" diagonal Head-Up Display with off-road inclinometer

TRIM DETAILS BUILD & PRICE

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DENALI

STARTING AT:

AVAILABLE TOW UP TO 13,970 KG (30,800 LBS.)^†

KEY FEATURES

20" Ultra-Bright machined wheels with bright chrome inserts^†
Denali-exclusive authentic open-pore wood, patterned aluminum trim and forge perforated leather seating surfaces
12-way heated and ventilated power front seats

 AVAILABLE FEATURES

Duramax 6.6L Turbo-Diesel V8 engine with Allison 10-speed automatic transmission
Power sunroof
Rear Camera Mirror^†

TRIM DETAILS BUILD & PRICE

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AT4X^†

STARTING AT:

AVAILABLE TOW UP TO 8391 KG (18,500 LBS.)^†

KEY FEATURES

Factory-installed 1.5" suspension lift, Multimatic^® DSSV dampers, rear electronic-locking differential, larger steel transfer case skid plate and front aluminum skid plate
35" Goodyear® Territory MT tires
16-way heated and ventilated power front seats with massage feature
Obsidian Rush interior featuring full-grain leather seating with technical-grain leather accents and authentic Vanta Ash wood

 AVAILABLE FEATURES

AT4X AEV Edition featuring stamped steel bumpers, skid plates, steering gear and transfer case, and 18" Salta gloss-black wheels
Duramax 6.6L Turbo-Diesel V8 engine with Allison 10-speed automatic transmission

TRIM DETAILS BUILD & PRICE

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DENALI ULTIMATE

STARTING AT:

AVAILABLE TOW UP TO 13,925 KG (30,700 LBS.)^†

KEY FEATURES

Duramax 6.6L Turbo-Diesel V8 engine with Allison 10-speed automatic transmission
Signature Vader Chrome grille with High Gloss Black surround and exclusive 20" Ultra-Bright machined aluminum wheels with gloss-black inserts^†
Exclusive Alpine Umber interior featuring full-grain leather seating, authentic open-pore Paldao wood and 16-way power front seats with massage feature
12-Speaker Bose^† Premium Series with Centerpoint^† surround sound
Illuminated power assist steps and MultiPro Tailgate Audio System by KICKER

 AVAILABLE FEATURES

Auxiliary trailer camera

TRIM DETAILS BUILD & PRICE

SIERRA HD COLOURS

BUILD & PRICE

CAPABILITY

Serious power. Serious trailering.

A 2025 GMC Sierra HD truck towing a trailer thorugh a rocky terrain.

Front-side view of the 2025 GMC Sierra HD truck towing a large trailer on a cliffside road.

DURAMAX 6.6L TURBO-DIESEL V8 ENGINE

Sierra Heavy Duty’s available Duramax 6.6L Turbo-Diesel V8 engine features an efficient turbocharger and Allison 10-speed automatic transmission.

VIEW DETAILS

SERIOUS TOWING POWER

The 2500 Crew Cab offers available max towing of up to 9,920 kg (21,870 lbs.).^†

VIEW DETAILS

ADVANCED TRAILERING TECH

The 2025 Sierra Heavy Duty offers the most trailering assistance technologies in its class,^† so you can trailer with more confidence.

VIEW DETAILS

INTERIOR

Premium interiors to make every trip first-class.

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16-WAY POWER FRONT SEATS WITH MASSAGING FEATURE

Experience serious comfort in Sierra Heavy Duty’s available best-in-class^† 16-way power front seats with massaging feature.

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LUXURIOUS MATERIALS

Sierra HD Denali Ultimate’s Alpine Umber interior features full-grain leather seating, plaited contrast stitching, and embossed and laser-etched topographical map patterns of Mt. Denali’s summit.

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SPACIOUS CABIN

The Sierra Heavy Duty truck features best-in-class Crew Cab front head and leg room.^†

TECHNOLOGY

Keep informed and in command.

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13.4" DIAGONAL CENTRE TOUCHSCREEN

This tablet-style touchscreen — the largest in its class^† — is the customizable, high-tech centrepiece of the cabin.

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15" DIAGONAL MULTICOLOUR HEAD-UP DISPLAY

The available 15" diagonal Head-Up Display helps keep important information like speed and alerts in clear view.

VIEW DETAILS

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12.3" DIAGONAL COLOUR DRIVER INFORMATION CENTRE

Control and customize important vehicle, driving and infotainment content in high-resolution clarity with an available 12.3" diagonal digital Driver Information Centre.

EXTERIOR

Powerfully bold. Stands out proud.

Three 2025 GMC Sierra HD trucks parked near each other outdoors during a sunny day.

Close up view of the chrome grilles on the 2025 GMC Sierra HD truck.

BOLD FRONT END

Stand out everywhere you go with GMC Sierra HD Denali’s iconic chrome grille, front bumper and fascia.

Front view of the 2025 GMC Sierra HD truck with its headlights on.

LED PROJECTOR HEADLAMPS AND SIGNATURE LIGHTING

LED projector headlamps with striking animated sequences help enhance Sierra Heavy Duty’s impressive exterior design.

2025 GMC Sierra HD truck with its tailgate open.

SIX-FUNCTION MULTIPRO TAILGATE

The powerfully innovative available MultiPro Tailgate combines six convenient functions to help make light work of almost any job in your work truck.

VIEW DETAILS

SAFETY

Front-side view of the 2025 GMC Sierra HD truck towing a trailer through an arid terrain.

SIERRA HD PRO SAFETY

Every GMC Sierra 2500 HD and GMC Sierra 3500 HD work truck includes active safety and driver assistance technologies that help while driving and trailering. Sierra HD Pro Safety includes:

Forward Collision Alert
Following Distance Indicator
Front Pedestrian Braking

IntelliBeam
Lane Departure Warning
Automatic Emergency Braking

VIEW MORE SAFETY DETAILS

Safety or driver assistance features are no substitute for the driver’s responsibility to operate the vehicle in a safe manner. Read the vehicle Owner’s Manual for important feature limitations and information.