The toughest jobs have a long list of demands and the 2023 GMC Sierra Heavy Duty trucks—the Sierra 2500HD and Sierra 3500HD are designed to take on any challenge. These heavy-duty trucks are masterfully engineered to be workhorses with equal parts durability, power and luxury for you not only to get your work done but to do so in style and comfort. Tow, haul, and perform with incredible force. With a staggering amount of customization available choose your cabin size, standard, crew or double cab, and get the right bed size to match with a standard and long bed available. Bred for the worksite, offroading, and so much more, find your 2023 Sierra HD truck with your automotive leader right here in Ontario, Gus Brown Port Perry. Let our experts take you through a tour of these true heavy-duty truck titans, and learn what you can accomplish behind the wheel of the Sierra HD.
Exterior
Rugged, Yet Luxurious Design
Bold, and ready to get the work, it all starts with the exterior of the 2023 GMC Sierra HD trucks, crafted to be functional, durable, and stunning. These heavy-duty trucks aren’t only going to turn heads, they’re fully outfitted to accomplish any feat with ease.
- Trailering Mirrors: Available trailering mirrors can either power fold or manually extend and retract, all at the touch of a button. Additionally, LED rear guidance lamps, lower convex mirrors and amber auxiliary clearance lamps all assist you when backing up a trailer.
- Side Bed Step: Standard on every HD model, the side bed step helps to provide easy access when grabbing any of your tools, equipment, or other items from the cargo bed.
- Dual-Path Air Induction System: Featured in the 6.6L Duramax Turbo-Diesel engine is the innovative Dual Path Air Induction system. This system takes in cool air through the hood scoop and front grille to cool the inside temperature of your engine, helping to increase performance.
- Advanced Lighting: Premium lighting is available across the Sierra HD, with fog lamps, LED fog lamps, LED cargo bed lighting, and roof marker lamps rounding out a lighting group that will make your life easier, day or night.
GMC PRO Multigate
Featuring six unique functions to help assist you with loading and unloading the cargo box, the world’s first-ever six-function MultiPro Tailgate is an innovative detail that is hard to refuse. The MultiPro Tailgate features:
- Primary Gate: Open with either your key fob’s power release or directly from the button on the gate.
- Primary Gate Load Stop: Your load stop can help prevent items from sliding out of your bed while you have your gate open.
- Easy Access: The inner gate can fold down to give you easy access while loading and unloading the cargo bed.
- Full-Width Step: Remove the conventional hitch to turn the inner gate into a step for easy entry and access to the cargo bed.
- Inner Gate Load Stop: The inner gate’s load stop helps to prevent second-tier items from sliding out of the cargo bed.
- Inner Gate With Work Surface: Turn the opened inner gate into a convenient working surface in a pinch.
2023 Sierra HD Exterior
| Dimensions: | Sierra 2500 HD Denali Crew Cab Standard Bed | Sierra 3500 HD Denali Crew Cab Standard Bed |
|---|---|---|
| Length (mm/in) | 6,352 / 250.08 | 6,759 / 266.09 |
| Width (without mirrors) (mm/in) | 2,079 / 81.85 | 2,079 / 81.85 |
| Height (mm/in) | 2,027 / 79.82 | 2,049 / 80.67 |
| Wheelbase (mm/in) | 4,037 / 158.94 | 4,369 / 172.00 |
| Cargo Box Length (on floor) (mm/in) | 2,088 / 82.20 | 2,496 / 98.27 |
| Cargo Box Width (on floor) (mm/in) | 1,814 / 71.40 | 1,814 / 71.40 |
| Ground Clearance (mm/in) | 257 / 10.12 | 283 / 11.14 |
| Cargo Volume (L) | 1,968 | 2,364 |
Best-In-Class HD Cargo Bed Volume
GMC Sierra HD AT4
GMC Sierra HD Denali
Interior
Lavish & Durable Interior
Outfitted to provide the highest level of comfort and utility, the interior of the Sierra HD is gorgeously crafted and includes numerous amenities to help make your ride as convenient as it is comfortable. Stretch out with your passengers while you experience the best-in-class rated Crew Cab front headroom and legroom. Other highlighted interior features include: available leather-wrapped heated steering wheel, heated/ventilated front leather-appointed seats, available HVAC system with dual-zone climate control, and more.
Storage Solutions
Smartly store everything you need for your work, leisure and more thanks to the storage solutions featured in the 2022 GMC Sierra HD. Storage features include:
- Rear seat storage: Available rear seatback storage is a great option for smaller road trip essentials like smartphones and other electronics.
- Rear-fold split-bench: Store essential gear conveniently right under your rear seats.
- Centre console: You won’t fall short on storage thanks to the massive centre console in the Sierra HD and its large lower lockable glove box and upper glove box. The available lockable console vault accessory is perfect for your most precious items.
Sierra HD AT4
Engineered to take on the toughest terrain, the Sierra HD AT4 trim can conquer any off-road challenge without compromise. The 2023 GMC Sierra HD AT4 also features a uniquely crafted interior, featuring:
- Heated/ventilated front leather seat surfaces
- Heated leather-wrapped steering wheel
- Jet Black & Kalahari interior
- Front & rear floor liners (featuring removable carpet inserts)
- AT4 embroidered logos
- Rear seatback, plus under-seat storage
- HVAC system, with dual-zone climate control
- Rear-seat outlets
Sierra HD Denali
Experience all that the Sierra HD has to offer with the premium features from the top-level Denali trim. Ride in stylish luxury and experience the exclusive features that Denali has to offer, highlights include:
- Jet Black and exclusive Denali Dark Walnut/Dark Ash Grey interiors
- Forge perforated leather seating surfaces with front heated and ventilated bucket seats (driver seat includes memory)
- Denali-exclusive authentic Open-Pore Ash Wood, brushed aluminum trim, chrome accents and more
- Heated rear outboard seating with expansive rear leg room
2023 Sierra HD Interior
| Dimensions: | Sierra 2500 HD Denali Crew Cab Standard Bed | Sierra 3500 HD Denali Crew Cab Standard Bed |
|---|---|---|
| Front Headroom (mm/in) | 1,093 / 43.03 | 1,093 / 43.03 |
| Rear Headroom (mm/in) | 1,013 / 39.88 | 1,019 / 40.12 |
| Front Legroom (mm/in) | 1,131 / 44.53 | 1,131 / 44.53 |
| Rear Legroom (mm/in) | 1,102 / 43.40 | 1,102 / 43.40 |
| Front Shoulder Room (mm/in) | 1,677 / 66.02 | 1,677 / 66.02 |
| Rear Shoulder Room (mm/in) | 1,659 / 65.30 | 1,659 / 65.30 |
| Front Hip Room (mm/in) | 1,554 / 61.18 | 1,554 / 61.18 |
| Rear Hip Room (mm/in) | 1,530 / 60.24 | 1,530 / 60.24 |
| Passenger Capacity | 5 | 5 |
Performance & Capability
Heavy Duty Capability
Engineered to perform first and foremost, the 2023 Sierra HD makes your day on the job that much easier. With up to 36,0000 lbs of max-towing power, and innovative features that are exclusive to top trim levels like the Denali and AT4, you can demand more out of your truck and have the Sierra HD fulfill all expectations.
Suspension: Independent front suspensions keep your wheels in line and your ride comfortable all while increasing the turnability in your Sierra HD. The live-axle suspension also assists in your overall ride comfort while helping to balance payload management.
Engine Options: Many additional features help to keep the available Duramax Turbo-Diesel V8 at an optimal running temperature. From a 28-inch variable-speed cooling fan to the Diesel After-Run feature, as well as the Dual Path Air Induction system that also works to draw in cool air to your engine.
Stop & Go Technology
The numerous Stop & Go features of the Sierra HD help assist you both on the road, and while your truck is parked. These features include:
- Auto Electric Parking Brake Assist (available)
- Park Grade Hold Assist
- Digital Variable Steering Assist (available)
- 2-Speed Autotrac Transfer Case (available)
- Traction Select System (with Tow/Haul and Off-Road Mode) (available)
Available Packages
Elevate the adventure-ability of your Sierra HD even further with available add-on packages. Turn your Sierra HD into an off-roading beast and certified hauler.
X31 Off-Road Package:
- Off-road suspension
- Underbody skid plates
- Twin-tube Rancho shocks
- Eaton automatic locking rear differential
Gooseneck/5th Wheel Hitch Package:
- Hitch platform for gooseneck or 5th wheel hitch
- Hitch platform with tray to accept ball and stamped bed holes (removable caps installed)
- Bed-mounted 7-pin trailer harness
- Bed View Camera (available)
2023 Sierra HD Engine & Transmission Options
| Specifications: | Sierra 2500 | Sierra 3500 |
|---|---|---|
| Engine | 6.6L V8 Gas Engine / 6.6L Duramax Turbo-Diesel V8 | 6.6L V8 Gas Engine / 6.6L Duramax Turbo-Diesel V8 |
| Horsepower | 401 hp / 445 hp | 401 hp / 445 hp |
| Torque | 464 lb-ft / 910 lb-ft | 464 lb-ft / 910 lb-ft |
| Max Towing (Conventional) | 8391 kg (18,500 lbs) | 9072 kg (20,000 lbs) |
| Max Towing (5th Wheel) | 8396 kg (18,510 lbs) | 14515 kg (32,000 lbs) |
| Max Towing (Gooseneck) | 8396 kg (18,510 lbs) | 16,329 (36,000 lbs) |
| Max Payload | 1805 kg (3,979lbs) | 3376 kg (7,442 lbs) |
Technology
Up to 15 Camera Views
First-in-Class 15” Head-Up Display
Infotainment & Connectivity
Safety
Sierra HD Intelligent Safety
Piloting a HD truck takes skill, thankfully GMC has numerous available advanced driver assists and safety technology to keep you confident and safe while you’re behind the wheel. Highlighted technologies include:
Available Lane Departure Warning: this system alerts the driver when they may be accidentally drifting out of their lane, so the driver can keep a steady course. This system will not activate when the driver is intentionally changing lanes or has their signal light on.
Available Front and Rear Park Assist: Providing distances between walls, curbs, vehicles, and other objects while parking, this assist will help you pull into and back out of parking spaces with ease.Other highlighted available advanced safety features include:
- Automatic Emergency Braking
- Forward Collision Alert
- Following Distance Indicator
- Safety Alert Seat
- Intellibeam—Auto High Beams
- Teen Driver
What’s New For Sierra HD in 2023?
Coming into 2023, Sierra HD receives no major updates, as a mid-cycle refresh is planned for 2024 HD models. The most notable recent changes for Sierra HD was for the 2021 model year when the Jack-knife alert and trailer length indicator both debuted for Sierra HD.
2023 Sierra HD Models
Pro
Starting at $58,897● Available max. towing at 16,629 KG (36,000 LB.)
● Best-in-class heavy-duty cargo bed volume
● First heavy duty in its class offering Allison® 10-speed Automatic Transmission with available 6.6L Duramax® Turbo-Diesel V8 engine
● Available ProGrade Trailering System with in-vehicle Trailering App (available on SLE and standard on SLT)
● Advanced camera views† (available on SLT) including industry-first transparent trailer view, required HD Surround Vision† and more
● Available World’s First Six-Function MultiProTM Tailgate
SLE
Starting at $58,897● Available max. towing at 16,629 KG (36,000 LB.)
● Best-in-class heavy-duty cargo bed volume
● First heavy duty in its class offering Allison® 10-speed Automatic Transmission with available 6.6L Duramax® Turbo-Diesel V8 engine
● Available ProGrade Trailering System with in-vehicle Trailering App (available on SLE and standard on SLT)
● Advanced camera views† (available on SLT) including industry-first transparent trailer view, required HD Surround Vision† and more
● Available World’s First Six-Function MultiProTM Tailgate
SLT
Starting at $58,897● Available max. towing at 16,629 KG (36,000 LB.)
● Best-in-class heavy-duty cargo bed volume
● First heavy duty in its class offering Allison® 10-speed Automatic Transmission with available 6.6L Duramax® Turbo-Diesel V8 engine
● Available ProGrade Trailering System with in-vehicle Trailering App (available on SLE and standard on SLT)
● Advanced camera views† (available on SLT) including industry-first transparent trailer view, required HD Surround Vision† and more
● Available World’s First Six-Function MultiProTM Tailgate
AT4
Starting at $85,147● Off-road suspension with Rancho® shocks and skid plates
● Available multicolour 15″ diagonal Head-Up Display with inclinometer
● Up to 15 available camera views including industry-first transparent trailer view, HD Surround Vision and more
● AT4-exclusive black chrome exterior accents and durable, athletic interior
● First heavy duty in its class offering Allison® 10-Speed Automatic with available 6.6L Duramax® Turbo-Diesel V8 engine
● World’s First Six-Function MultiProTM Tailgate
Denali
Starting at $93,397● First heavy duty in its class offering Allison® 10-Speed Automatic Transmission with available 6.6L Duramax® Turbo Diesel V8 engine
● World’s First Six-Function MultiProTM Tailgate
● Up to 15 available camera views including industry-first transparent trailer view, HD Surround Vision and more
● First HD in its class with available multicolour 15″ diagonal Head-Up Display & Rear Camera Mirror
● Signature Denali grille with chrome inserts
● Denali-exclusive authentic open-pore Ash wood, brushed aluminum trim, chrome accents and more
Get to work with one of the 2023 GMC Sierra HD offerings available at Gus Brown in Port Perry. Whether you’re looking for a new HD truck, half-ton pickup, or want to get into an SUV, our experts have you covered. Explore our GMC and Buick models available in our new and used inventories. Shop for genuine OEM parts, tires, schedule service with our team, and more. Visit our dealership today, or contact us now to get started.