2025 GMC SIERRA HEAVY DUTY

PRO, SLE & SLT

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Wide Front-side view of a 2025 GMC Sierra HD Pro/SLE/SLT Truck traversing past a desert road.

SLT STARTING AT:

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AVAILABLE TOWING UP TO

16,329 KG (36,000 LBS.)†
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KEY FEATURES

AVAILABLE

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

AS SHOWN 9,797 KG (21,600 LBS.)

BEST-IN-CLASS†

HEAVY DUTY CARGO BED VOLUME

AVAILABLE

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

AVAILABLE

13.4” DIAGONAL CENTRE TOUCHSCREEN IS THE LARGEST IN THE CLASS†

AVAILABLE

PROGRADE® TRAILERING TECH

AVAILABLE

MULTIPRO™ TAILGATE

CURRENT OFFERS

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EXPLORE GMC SIERRA HD PRO, SLE & SLT TRIMS

DOWNLOAD SIERRA HD FEATURES & OPTIONS GUIDE
2025 Sierra HD 2500 Pro in Summit White.

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PRO

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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
  • Best-in-class† Heavy Duty Cargo Bed Volume
  • Wireless Apple CarPlay®† and wireless Android AutoTM† compatibility

AVAILABLE FEATURES

  • Duramax 6.6L Turbo-Diesel V8 engine with Allison 10-speed automatic transmission
  • Adaptive Cruise Control† with trailering†
BUILD & PRICE
2025 Sierra HD 2500 SLE in Onyx Black.

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SLE

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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
BUILD & PRICE
2025 Sierra HD 2500 SLT in Whitefrost Tricoat.

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SLT

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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
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SLT COLOURS
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INTERIOR

Get inside and get comfortable.


Wide View of the Dashboard, Infotainment System, and Steering Wheel inside the 2025 GMC Sierra HD Pro/SLE/SLT Truck.
Close-up of the Seat Controls in a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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PREMIUM FRONT SEATS

Available 10-way power-adjustable front heated and ventilated bucket seats with perforated leather appointments.
Close-up of the Steering Wheel and Infotainment System inside a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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HEATED STEERING WHEEL

Keep your hands warm on chilly days in your work truck with an available heated steering wheel.
Wide View of the Interiors of the 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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SPACIOUS CABIN

The Sierra Heavy Duty pickup truck features the best-in-class† Crew Cab front head and leg room.
Close-up View of the Climate Controls in a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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DUAL-ZONE AUTOMATIC CLIMATE CONTROL

The available system automatically controls the fan speed, air delivery, air conditioning and air recirculation to help heat or cool the cabin to your desired temperature.
Side View of the Seating in a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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PREMIUM REAR-SEAT COMFORT

Spacious rear leg room on Crew Cab models helps keep the backseat passengers in your pickup truck comfortable.

EXTERIOR

Sierra Heavy Duty looks every inch the premium pulling machine.
Wide Front Three-Quarters View of a 2025 GMC Sierra HD Truck Driving Through the Desert
Close-up View of the Grille on a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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LED PROJECTOR HEADLAMPS

LED projector headlamps feature GMC signature animated lighting sequences.
Close-up View of the Wheel on a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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NEW 20" WHEELS

Available 20" wheels with bright face and dark painted pockets make a powerful statement on SLE or SLT single rear wheel models.


Close-up View of the Truck Bed on a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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GENEROUS CARGO BED VOLUME

Sierra Heavy Duty’s bed height makes for comfortable lift-in loading, is optimized for gooseneck/fifth-wheel trailer clearance and offers best-in-class† HD cargo bed volume.
Close-up View of the Passenger Side Mirror on a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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TRAILERING MIRRORS

Available mirror features such as power-extension, retraction and folding capabilities, auxiliary spot lamps, amber clearance lamps, auto-dimming upper glass, and perimeter lighting help improve the view.

Denali Ultimate Shown.
Close-up View of the MultiPro Tailgate with Step Lowered on a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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SIX-FUNCTION MULTIPRO TAILGATE

The available world’s first MultiPro Tailgate combines six convenient functions that help improve loading, unloading and accessing the cargo bed.

VIEW DETAILS

TECHNOLOGY

Keep informed and in command.
Wide View of the spacious interiors in a 2025 GMC Sierra HD Pro/SLE/SLT Truck.
Close-up of the Infotainment System with application in use in a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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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.
Close-up of the Digital dashboard in a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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12.3" DIAGONAL COLOUR DRIVER INFORMATION CENTRE

Control and customize important vehicle, driving and infotainment content with high-resolution clarity on SLE and SLT.


Close-up of the Infotainment System with Apple CarPlay in Use in a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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WIRELESS COMPATIBILITY

Connect your compatible smartphone to access a more integrated in-vehicle experience with Apple CarPlay† or Android Auto† compatibility.
Close-up of the Steering Wheel, Digital Dashboard, and Infotainment System in a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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PREMIUM GMC INFOTAINMENT SYSTEM†

With available Google built-in compatibility† (subscription[s] required for full functionality), this system offers a helpful, personalized and seamless way to enhance your in-vehicle entertainment on SLE and SLT.


A Camera View being displayed in the infotainment screen in a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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UP TO 13 AVAILABLE CAMERA VIEWS

Get help seeing around your work truck and compatible trailer with up to 13 available camera views,† including HD Surround Vision,† Bed View Camera† and the available industry-first transparent trailer view.†

VIEW DETAILS

Close-up View of the Bose Speaker in a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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BOSE PREMIUM SOUND SYSTEM

The available Bose† Premium Sound System supplies seven well-placed speakers, including a Richbass woofer, to produce powerful, high-quality concert-like sound wherever you go.

CAPABILITY

Strength and intelligence on the road.
Wide View of a 2025 GMC Sierra HD Pro/SLE/SLT Truck towing multiple vehicles.
Close-up View of "Duramax" Badging on a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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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

Close-up View of "6.6 L V8" and "Allison Transmission" Badging on a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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6.6L V8 GAS ENGINE

Sierra Heavy Duty’s standard 6.6L V8 gas engine is paired with the Allison 10-speed automatic transmission, to help optimize power, torque and efficiency.

VIEW DETAILS

Front-side View of a 2025 GMC Sierra HD Pro/SLE/SLT Truck Hauling a trailer on the road.

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SERIOUS TOWING POWER

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

VIEW DETAILS

Trailer hook being showing in the infotainment screen in a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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PROGRADE TRAILERING TECH

This advanced suite of available intelligent technologies helps streamline the hitching and towing process with integrated tools that help enhance your sense of confidence and visibility.

VIEW DETAILS


Close-up View of the Cruise Control Buttons on the Steering Wheel in a 2025 GMC Sierra HD Pro/SLE/SLT Truck.

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ADAPTIVE CRUISE CONTROL† WITH TRAILERING†

Adaptive Cruise Control† with trailering† allows the Sierra Heavy Duty’s available Adaptive Cruise Control to account for additional drag and increased braking distances when towing a trailer.

SAFETY


A 2025 GMC Sierra HD Pro/SLE/SLT Truck towing a large trailer alone on a mountainside road.

SIERRA HD PRO SAFETY

Every Sierra Heavy Duty pickup 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.

GMC SIERRA 2500 HD SPEC HIGHLIGHTS
  • 2500 CREW CAB
  • 2500 DOUBLE CAB
  • 2500 REGULAR CAB
2025 GMC Sierra HD 2500 Crew Cab specifications.

The Sierra 2500 Heavy Duty pickup truck comes in 2WD and 4WD Crew Cab models with a 6' 9" standard bed or an available 8' long bed.

MAX AVAILABLE GOOSENECK/FIFTH-WHEEL TRAILERING RATING

9,920 kg (21,870 lbs.)†

MAX AVAILABLE CONVENTIONAL
TRAILERING

9,071 kg (20,000 lbs.)†

MAX GCWR

13,607 kg (30,000 lbs.)†

GROUND CLEARANCE

10.1"

WHEELBASE

159.0"–172.0"

CARGO VOLUME

69.5–83.5 cu. ft.†

FRONT/REAR TREAD WIDTH
SRW:

68.4"/68.3"

MAX PAYLOAD

1,750 kg (3,859 lbs.)†
VIEW DETAILED SPECS
2025 GMC Sierra HD 2500 Double Cab specifications.

The Sierra 2500 HD Pro and SLE pickup trucks come in 2WD and 4WD Double Cab models with a 6' 9" standard bed or an available 8' long bed.

MAX AVAILABLE GCWR

11,793 kg (26,000 lbs.)†

GROUND CLEARANCE

10.1"–10.2"

WHEELBASE

149.4"–162.5"

CARGO VOLUME

69.5–83.5 cu. ft.†

MAX AVAILABLE GOOSENECK/FIFTH-WHEEL TRAILERING RATING

8,436 kg (18,600 lbs.)†

MAX AVAILABLE CONVENTIONAL
TRAILERING

8,119 kg (17,900 lbs.)†

FRONT/REAR TREAD WIDTH

68.4"/68.3"

MAX AVAILABLE PAYLOAD

1,718 kg (3,788 lbs.)†

FRONT/REAR TREAD WIDTH

68.4"/68.3"
VIEW DETAILED SPECS
2025 GMC Sierra HD 2500 Regular Cab specifications.

The Sierra 2500 Heavy Duty pickup truck comes in 2WD and 4WD Regular Cab models with an 8' long bed.

MAX AVAILABLE GCWR

13,607 kg (30,000 lbs.)†

GROUND CLEARANCE

10.2"

WHEELBASE

142.0"

CARGO VOLUME

83.5 cu. ft.†

MAX AVAILABLE GOOSENECK/FIFTH-WHEEL TRAILERING RATING

10,155 kg (22,390 lbs.)†

MAX AVAILABLE CONVENTIONAL
TRAILERING

6,577 kg (14,500 lbs.)†

FRONT/REAR TREAD WIDTH

68.4"/68.3"

MAX AVAILABLE PAYLOAD

1,843 kg (4,064 lbs.)†

FRONT/REAR TREAD WIDTH

68.4"/68.3"
VIEW DETAILED SPECS

GMC SIERRA 3500 HD SPEC HIGHLIGHTS
  • 3500 CREW CAB
  • 3500 DOUBLE CAB
  • 3500 REGULAR CAB
2025 GMC Sierra HD 3500 Crew Cab specifications.

The Sierra 3500 Heavy Duty pickup truck comes in 2WD and 4WD Crew Cab models with either a 6' 9" standard bed or an available 8' long bed. Long bed is available with a Single Rear Wheel or Dual Rear Wheel configuration.

MAX AVAILABLE CONVENTIONAL
TRAILERING

9,071 kg (20,000 lbs.)†

MAX AVAILABLE GOOSENECK/FIFTH-WHEEL
TRAILERING RATING

14,260 kg (31,440 lbs.)†

MAX AVAILABLE GCWR

18,143 kg (40,000 lbs.)†

GROUND CLEARANCE

SRW:

11.1"–11.2"

DRW:

10.4" 

WHEELBASE

159.0" – 172.0" 

CARGO VOLUME

69.5–83.5 cu. ft.†

FRONT/REAR TREAD WIDTH

SRW:

68.4"/68.3"

DRW:

68.8"/75.0"

MAX AVAILABLE PAYLOAD

3,020 kg (6,658 lbs.)†

FRONT/REAR TREAD WIDTH

SINGLE REAR WHEEL: 68.4"/68.3"
DUAL REAR WHEEL: 68.8"/75.0"

VIEW DETAILED SPECS
2025 GMC Sierra HD 3500 Double Cab specifications.

The Sierra 3500 Heavy Duty pickup truck comes in 2WD and 4WD Double Cab models with an 8' long bed Single Rear Wheel or Dual Rear Wheel configuration.

MAX AVAILABLE GCWR

18,143 kg (40,000 lbs.)†

GROUND CLEARANCE

SRW:

11.2" 

DRW:

10.4"

WHEELBASE

162.5"

CARGO VOLUME

83.5 cu. ft.†

MAX AVAILABLE GOOSENECK/FIFTH-WHEEL TRAILERING RATING

14,324 kg (31,580 lbs.)†

MAX AVAILABLE CONVENTIONAL
TRAILERING

9,071 kg (20,000 lbs.)†

FRONT TREAD/REAR TREAD WIDTH

SRW:

68.4"/68.3"

DRW:

68.8"/75.0"

MAX AVAILABLE PAYLOAD

3,071 kg (6,771 lbs.)†

FRONT/REAR TREAD WIDTH

SINGLE REAR WHEEL: 68.4"/68.3"  
DUAL REAR WHEEL: 68.8"/75.0"
VIEW DETAILED SPECS
2025 GMC Sierra HD 3500 Regular Cab specifications.

The Sierra 3500 Heavy Duty pickup truck comes in 2WD and 4WD Regular Cab models with an 8' long bed Single Rear Wheel or Dual Rear Wheel configuration.

MAX AVAILABLE GCWR

19,912 kg (43,900 lbs.)†

GROUND CLEARANCE

SRW:

11.2"

DRW:

10.5"

WHEELBASE

141.5" 

CARGO VOLUME

83.5 cu. ft.†

MAX AVAILABLE GOOSENECK/FIFTH-WHEEL TRAILERING RATING

16,329 kg (36,000 lbs.)/14,514 kg (32,000 lbs.)†

MAX AVAILABLE CONVENTIONAL
TRAILERING

9,071 kg (20,000 lbs.)†

FRONT/REAR TREAD WIDTH

SRW:

68.4"/68.3"

DRW:

68.8"/75.0"

MAX AVAILABLE PAYLOAD

3,283 kg (7,237 lbs.)†

FRONT/REAR TREAD WIDTH

SINGLE REAR WHEEL: 68.4"/68.3"  
DUAL REAR WHEEL: 68.8"/75.0"

VIEW DETAILED SPECS

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Due to current supply-chain shortages, certain features shown have limited or late availability, or are no longer available. See the window label or a dealer regarding the features on an individual vehicle.

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