2026 GMC Sierra AT4 – 6.2L V8 Power

This one doesn’t sneak up on you… it announces itself with authority. The 2026 GMC Sierra AT4 Crew Cab in Onyx Black pairs raw V8 power with off-road capability and premium craftsmanship. It’s a truck built for drivers who want muscle underfoot and refinement at their fingertips.

6.2L EcoTec3 V8 – Pure, Unfiltered Power

This is the heartbeat of the AT4:

• 6.2L EcoTec3 V8 • 420 horsepower / 460 lb-ft of torque • Dynamic Fuel Management for efficiency

Press the throttle and it responds instantly… no waiting, no hesitation, just power on demand.

10-Speed Automatic – Smooth Authority

• 10-speed automatic transmission • Tow/haul mode with grade braking • Steering column paddle shifters

It delivers power like a seasoned heavyweight… controlled, confident, and always composed.

AT4 Off-Road Capability

Built to explore beyond the pavement:

• All-terrain tires with off-road suspension tuning • Off-Road High Clearance Steps • Factory skid protection and rugged AT4 stance

Mud, gravel, snow… it treats them all like scenery.

Bold AT4 Design

• 20" machined aluminum wheels with Carbon Grey accents • Onyx Black exterior for a stealth, aggressive look • Signature AT4 styling throughout

It looks like it belongs anywhere… because it does.

Premium Interior – Rugged Luxury

• Perforated leather seating with Kalahari accents • Heated comfort and premium finishes • Power sunroof to open up every drive

It’s the kind of interior that makes you forget you’re in a truck… until you use it like one.

Technology That Elevates Every Drive

• 13.4" GMC Infotainment System with Google Built-In • Wireless Apple CarPlay & Android Auto • 15" Multicolour Head-Up Display • Rear Camera Mirror with full display

Everything is intuitive, responsive, and right where it should be.

Visibility & Trailering Intelligence

• Bed View Camera for cargo and hitch alignment • Rear Camera Mirror for unobstructed rear visibility • Trailer Camera Provisions

Hooking up and backing in becomes almost effortless.

Performance Enhancements

This AT4 doesn’t just move… it sounds the part:

• Active dual exhaust with sport mode • Performance air intake system • Heavy-duty cooling systems

It breathes deeper, runs cooler, and sounds sharper.

AT4 Premium & Technology Packages

Loaded with meaningful upgrades:

• Universal Home Remote • Power rear sliding window • Advanced display and camera technologies • Enhanced off-road usability

Ready for Work & Play

• Hard folding truck bed cover • Black sport steps (dealer-installed) • 170-amp alternator

Built to handle your weekday workload and weekend escapes.

Added Value

• 3 Years of SiriusXM

Why Buy from Boyer Chevrolet Buick GMC Ajax?

At Boyer Chevrolet Buick GMC Ajax, located at 425 Bayly Street West, you’re backed by a team that understands trucks inside and out, supported by a 4.7-star rating with over 1,500 reviews.

You get:

• Truck specialists who understand performance and capability • Competitive financing options • A trusted dealership serving Ajax, Whitby, Oshawa & Durham Region • Full support from factory-trained technicians

Power Meets Purpose

If you’re cross-shopping trucks like the Ford F-150 Tremor, Ram 1500 Rebel, or even the Chevrolet Silverado Trail Boss, the Sierra AT4 6.2L V8 stands apart with its blend of raw performance, off-road capability, and premium refinement.

📞 Call 905-427-2500 📍 Visit Boyer Chevrolet Buick GMC Ajax 📅 Book your test drive today

Power you can hear. Capability you can feel.

2026 GMC Sierra 1500 Elevation Crew Cab 4x4

Duramax Diesel | Elevation Premium | Z71 Off-Road | Cardinal Red

The 2026 GMC Sierra Elevation Crew Cab 4x4 delivers bold styling, advanced technology, and proven diesel capability in a full-size pickup designed to handle work, family, and adventure with ease. Finished in striking Cardinal Red and riding on 20" High Gloss Black aluminum wheels, this Sierra Elevation stands out with a confident, athletic presence enhanced by black exterior accents throughout.

Power comes from the highly regarded Duramax 3.0L Turbo-Diesel I6, producing 305 horsepower and an impressive 495 lb-ft of torque. Paired with a refined 10-speed automatic transmission featuring tow/haul mode, paddle shifters, and grade braking, this Sierra offers smooth acceleration, excellent fuel efficiency, and confident towing performance. The Z71 Off-Road Suspension, Hill Descent Control, and two-speed Autotrac transfer case provide added capability when conditions get tough.

Inside, the cabin balances rugged utility with premium comfort. Jet Black leather-appointed seating with front bucket seats and a floor-mounted centre console create a refined driving environment, while wireless charging and multiple USB ports keep devices powered and connected. The up-level rear seat with storage package adds exceptional versatility with under-seat storage and a fold-down armrest.

This Sierra is exceptionally equipped with the Elevation Premium Package, which includes the Preferred Package and Sierra Safety Plus Package, adding a comprehensive suite of features such as:

• Adaptive Cruise Control

• HD Surround Vision

• Front & Rear Park Assist

• Rear Cross Traffic Braking

• Rear Pedestrian Alert

• Trailer Side Blind Zone Alert

• Hitch View with pan/zoom

• In-Vehicle Trailering App

• Bose Premium 7-speaker audio system

Utility is elevated with the GMC MultiPro Tailgate, offering six functional load and access features, along with a spray-on bedliner with GMC logo, rear wheelhouse liners, and a hard folding tonneau cover by RealTruck. Black tubular assist steps, perimeter lighting, and high-gloss black mirror caps complete the Elevation’s aggressive, functional design. A power sunroof adds open-air comfort, while all-weather floor liners protect the interior year-round.

The 2026 GMC Sierra Elevation Crew Cab 4x4 is the perfect blend of diesel strength, modern technology, and bold Elevation styling—built for drivers who want premium features without stepping into a luxury price point.

2026 GMC Sierra Denali Ultimate Crew Cab Duramax Diesel – Onyx Black

Luxury meets legendary diesel performance in the 2026 GMC Sierra Denali Ultimate Crew Cab, the most refined and technologically advanced Sierra ever built. Finished in Onyx Black and equipped with 22" Ultra-Bright Machined wheels with chrome accents, this flagship GMC truck delivers unmistakable presence, premium craftsmanship, and serious capability.

The Denali Ultimate represents the very top of the Sierra lineup, combining heavy-duty performance with luxury SUV-level comfort.

Duramax 3.0L Turbo-Diesel Power

Under the hood is the efficient and powerful Duramax 3.0L Turbo-Diesel I6, producing 305 horsepower and an impressive 495 lb-ft of torque. Paired with a 10-speed automatic transmission, this advanced diesel powertrain delivers smooth acceleration, excellent towing capability, and impressive highway efficiency.

With the 3.23 rear axle ratio, tow/haul mode, and advanced powertrain braking systems, the Sierra Denali Ultimate is designed to confidently handle trailers, boats, and equipment across Ontario.

The engine also includes:

• Engine block heater for Canadian winters • 220-amp alternator • Advanced cooling and towing systems

Denali Ultimate Luxury Interior

Inside the cabin, the Alpine Umber Full-Grain Leather interior sets this truck apart. Denali Ultimate models feature exclusive materials and craftsmanship rarely found in pickup trucks.

Highlights include:

• Full-grain leather seating surfaces • Unique Denali Ultimate interior design and stitching • Premium wood and metal trim • Heated and ventilated front seating • Spacious Crew Cab configuration

This is luxury designed for both work and everyday comfort.

Advanced Technology

The Sierra Denali Ultimate is packed with cutting-edge technology designed to enhance both convenience and safety.

The centrepiece is the 13.4" GMC Premium Infotainment System with Google Built-In, offering:

• Integrated Google Maps navigation • Voice assistance and connected apps • Wireless Apple CarPlay and Android Auto • Bluetooth streaming audio • Large multi-touch display with customizable profiles

This intuitive system keeps drivers connected while maintaining focus on the road.

🚛 Premium Exterior Design

The Denali Ultimate exterior combines bold GMC styling with premium finishing details.

Key highlights include:

• 22" Ultra-Bright Machined wheels with chrome accents • Dual chrome exhaust outlets • Body-colour wheel arch mouldings • Signature Denali Ultimate design elements • Power running boards and premium exterior lighting

The result is a truck that looks just as impressive arriving at a job site as it does pulling into a restaurant downtown.

Why Buy Your GMC Sierra at Boyer Chevrolet Buick GMC Ajax?

Located at 425 Bayly Street West in Ajax, Boyer Chevrolet Buick GMC Ajax proudly maintains a 4.7-star Google rating with over 1,700 reviews. Our team is committed to delivering a professional, transparent, and enjoyable buying experience.

When you purchase from Boyer Ajax, you receive:

• Competitive lease and finance options • A trusted GMC dealership serving Ajax, Whitby, Oshawa, and Durham Region • Factory-trained technicians and full service support • A dealership focused on long-term customer relationships

Book Your Test Drive Today

If you're considering a Ford F-150 Platinum, Ram Limited, or other luxury pickup trucks, the 2026 GMC Sierra Denali Ultimate offers unmatched diesel efficiency, technology, and craftsmanship.

📞 Call 905-427-2500 📍 Visit Boyer Chevrolet Buick GMC Ajax 📅 Book your test drive today

Duramax diesel efficiency. Denali Ultimate luxury. GMC capability.

Experience the best Sierra ever built.

2026 GMC Sierra Denali Crew Cab

Luxury, strength, and advanced technology come together in the 2026 GMC Sierra Denali Crew Cab. Powered by the refined Duramax® 3.0L Turbo-Diesel and wrapped in unmistakable Denali craftsmanship, this full-size pickup delivers confident towing capability with premium comfort in every detail.

Performance & Capability

• Duramax® 3.0L Turbo-Diesel I6

  • 305 horsepower

  • 495 lb-ft of torque

• 10-Speed Automatic Transmission

  • Electronic Precision Shift

  • Steering column paddle shifters

  • Tow/Haul mode with Cruise Grade Braking

• 3.23 rear axle ratio

• Smooth, efficient power delivery with excellent towing and highway fuel efficiency

Exterior Design

• Onyx Black exterior finish

• 22" Painted Aluminum Wheels with machining and bright chrome inserts

• Signature Denali chrome accents

• GMC MultiPro™ Power Steps

  • Power-retractable

  • Foot-activated with rearward articulation for bed access

• Power sunroof for open-air driving

Interior Luxury & Comfort

• Jet Black Forge perforated leather seating

• Front bucket seats with centre console

• Premium Denali interior materials and detailing

• Spacious Crew Cab layout for passengers and gear

Technology & Infotainment

• 13.4" Premium GMC Infotainment System

  • Google built-in navigation & voice assistance

  • Wireless Apple CarPlay® & Android Auto™

  • Bluetooth connectivity

• Technology Package

  • 15" Multicolour Head-Up Display

  • Rear Camera Mirror with full camera display

Denali Reserve Package Highlights

• Technology Package

• Power sunroof

• GMC MultiPro Power Steps

• 22" Denali-exclusive wheel design

Additional Features

• Engine block heater

• 220-amp alternator

• Auto-dimming rear camera mirror

• SiriusXM® with 3-year subscription

• Front license plate kit (province-required)

📍 Available at Boyer Chevrolet Buick GMC Ajax 425 Bayly Street West, Ajax, Ontario 📞 905-427-2500

2026 GMC Sierra Elevation 4x4 – Bold Style, Premium Comfort, and Serious Capability

Stand out in Summit White with this 2026 GMC Sierra Elevation 4x4, a truck that blends aggressive styling, premium comfort, and advanced capability. Riding on 20" high-gloss black aluminum wheels with all-terrain blackwall tires, this Sierra is built to tackle any road with confidence. The dual exhaust with chrome tips, high-gloss black mirror caps, perimeter lighting, and black tubular assist steps give it a bold, elevated look from every angle.

Inside, the Jet Black leather-appointed interior with front bucket seats, wireless charging, and a full-length centre console surrounds you with comfort and convenience. The up-level rear seat with hidden storage, armrest, and under-seat compartments provides clever versatility, while the power sunroof floods the cabin with natural light.

Technology takes centre stage with the 13.4” Premium GMC Infotainment System featuring built-in Google apps, navigation, wireless Apple CarPlay, and Android Auto. A Bose Premium 7-speaker system with Richbass woofer delivers concert-quality sound. Plus, the In-Vehicle Trailering App with Hitch View and Trailer Camera Provisions makes hauling easier and safer than ever.

For capability, the Sierra is equipped with a 10-speed automatic transmission with electronic precision shift, X31 Off-Road Suspension Package, two-speed Autotrac transfer case, Hill Descent Control, and upgraded cooling systems. With 7100 lbs GVWR, this Sierra is engineered to handle demanding loads while delivering smooth, controlled performance.

Safety comes first with the Sierra Safety Plus Package, which adds HD Surround Vision, Front & Rear Park Assist, Rear Cross Traffic Braking, Rear Pedestrian Alert, Trailer Side Blind Zone Alert, and Perimeter Lighting. Adaptive Cruise Control, Trailer Blind Spot Monitoring, and advanced driver alerts give you confidence in every situation.

Practical touches like a spray-on bedliner with GMC logo, hard-folding tonneau cover, and all-weather floor liners ensure this truck is ready for daily life, work, and adventure.

This Sierra Elevation isn’t just another truck—it’s a fully equipped partner designed to deliver strength, style, and intelligence on every drive.

📞 Call Boyer Chevrolet Buick GMC Ajax today at 905-427-2500 to book your test drive in the 2026 GMC Sierra Elevation 4x4 and see why it’s the truck that does it all.

2026 GMC Sierra AT4X Crew Cab – Where Luxury Gets Dirty

The 2026 GMC Sierra AT4X Crew Cab is not your average pickup. It’s a purpose-built off-road machine wrapped in premium materials, powered by a 6.2L V8, and designed for drivers who want trail dominance without giving up Denali-level comfort. Finished in Onyx Black with an upscale Obsidian Rush full-grain leather interior, this AT4X is equal parts backcountry brute and refined daily driver.

6.2L V8 Power That Commands Respect

Under the hood, the AT4X brings serious muscle:

• 6.2L EcoTec3 V8 engine • 420 horsepower • 460 lb-ft of torque • Dynamic Fuel Management for efficiency • Paired with a 10-speed automatic transmission • Tow/haul mode with grade braking

Press the throttle and it answers like thunder rolling across a canyon.

AT4X Off-Road DNA

The AT4X trim sits at the top of GMC’s off-road lineup, engineered for real terrain:

• Factory off-road tuned suspension • Rugged stance with 18-inch wheels and all-terrain readiness • Advanced cooling systems for demanding conditions • Dual sport-mode active exhaust for performance sound

This truck doesn’t visit trails. It owns them.

Onyx Black Stealth Presence

Finished in Onyx Black, the AT4X leans into a bold, aggressive look:

• Darkened exterior styling • Signature GMC grille presence • Athletic, lifted profile • Black sport steps for easy entry

It looks like it was carved out of shadow.

Obsidian Rush Interior – True Premium Craftsmanship

Inside, the AT4X becomes a luxury lounge:

• Full-grain Obsidian Rush leather seating • Heated and refined front bucket seats • Premium centre console with storage and functionality • High-end materials throughout the cabin

Mud on the outside, executive suite on the inside.

Advanced GMC Infotainment

Stay connected with a modern digital cockpit:

• 13.4-inch touchscreen infotainment system • Google Built-In apps with navigation and voice control • Wireless Apple CarPlay & Android Auto • Bluetooth streaming for multiple devices

Technology that feels effortless, not overwhelming.

Performance Sound & Capability

This AT4X adds a dual active sport exhaust system, giving you:

• Aggressive exhaust tone under acceleration • Refined sound at cruising speeds • A performance feel that matches its capability

Because trucks should sound like they mean it.

Practical Upgrades

Dealer-installed and functional features include:

• Hard folding truck bed cover • Black sport step assist bars • Heavy-duty cooling systems for towing and off-road use • 170-amp alternator for power demands

Ready for work. Ready for play. Ready for both at once.

Why Buy from Boyer Chevrolet Buick GMC Ajax?

At Boyer Chevrolet Buick GMC Ajax, located at 425 Bayly Street West, we specialize in trucks that actually get used the way they’re built.

You get:

• Truck-focused product experts • Competitive lease and finance programs • Top value for trade-ins • GMC-certified service support • A trusted local dealership with strong reviews

📞 905-427-2500

Final Word

If you’re comparing the Ford F-150 Raptor, Ram 1500 TRX, or Chevrolet Silverado ZR2, the 2026 GMC Sierra AT4X delivers a rare blend of serious off-road capability and premium refinement.

This isn’t just a truck. It’s a luxury lodge that climbs mountains.

2026 GMC Sierra Denali Crew Cab – 6.2L V8 | Super Cruise | Coastal Dune

This isn’t just a pickup. It’s a rolling command center wrapped in chrome, leather, and horsepower. The 2026 GMC Sierra Denali Crew Cab blends raw V8 performance with cutting-edge technology and premium craftsmanship, creating a truck that feels just as at home on the job site as it does pulling up to dinner downtown.

Finished in refined Coastal Dune and sitting confidently on 22" painted aluminum wheels with chrome inserts, this Sierra Denali delivers presence before it even starts.

6.2L V8 Power – Pure Capability

Under the hood lives the legendary 6.2L EcoTec3 V8, producing a commanding 420 horsepower and 460 lb-ft of torque. This is the kind of engine that doesn’t ask for permission, it simply moves.

Paired with a 10-speed automatic transmission, you get:

• Smooth, responsive acceleration • Confident towing capability • Intelligent fuel management for improved efficiency

Add in Dynamic Fuel Management, and the truck seamlessly balances power and efficiency depending on your drive.

Super Cruise – Hands-Free Driving

This Sierra Denali is equipped with Super Cruise, GMC’s advanced hands-free driving technology for compatible highways.

Included in the Denali Reserve Super Cruise Package, this system offers:

• Hands-free driving on thousands of kilometres of mapped highways • Lane centering and adaptive cruise control • A dedicated Super Cruise steering wheel • Up to 3 years of Super Cruise and OnStar connectivity

This is next-level driving. Long highway trips just became effortless.

Denali Luxury Interior

Step inside and you’re surrounded by premium craftsmanship. The Jet Black Forge perforated leather seats deliver both comfort and sophistication, while the spacious Crew Cab layout ensures everyone rides first class.

Interior highlights include:

• Heated and ventilated front seating (standard in Denali) • Premium materials and refined finishes throughout • Massive centre console with storage and functionality

This is luxury, truck-style.

Technology Package – See Everything

The Technology Package elevates your awareness and driving experience with:

• 15" Multicolour Head-Up Display projecting key info onto the windshield • Rear Camera Mirror for a clear, unobstructed rear view

It’s like giving your truck a second set of eyes.

🔊 Performance Meets Sound

This Sierra doesn’t just perform, it announces itself.

• Performance Air Intake System enhances engine breathing • Dual Active Sport Exhaust delivers an aggressive, throaty tone when you want it

Quiet when cruising. Bold when it matters.

Premium Features & Utility

This Sierra Denali is loaded with features designed to elevate both work and lifestyle:

• Power sunroof for an open-air driving experience • MultiPro Power Steps with rearward articulating access for the bed • Hard folding bed cover for security and functionality • 13.4" GMC Infotainment System with Google Built-In • Wireless Apple CarPlay & Android Auto • 3 Years SiriusXM + OnStar One with Wi-Fi connectivity

This truck works hard, but it also thinks ahead.

Why Buy Your GMC Sierra Denali at Boyer Chevrolet Buick GMC Ajax?

At Boyer Chevrolet Buick GMC Ajax, located at 425 Bayly Street West, we proudly maintain a 4.7-star Google rating with over 1,500 customer reviews. Our team is committed to delivering a premium, transparent, and customer-first experience.

When you choose Boyer Ajax, you get:

• Competitive finance and lease options • A trusted GMC dealership serving Ajax, Whitby, Oshawa, and Durham Region • Factory-trained technicians and full service support • A team focused on long-term relationships, not just transactions

Book Your Test Drive Today

If you're considering trucks like the Ford F-150 Limited, Ram 1500 Limited, or Toyota Tundra Platinum, the 2026 GMC Sierra Denali Crew Cab stands in a league of its own.

📞 Call 905-427-2500 📍 Visit Boyer Chevrolet Buick GMC Ajax 📅 Book your test drive today

V8 power. Hands-free driving. Denali luxury.

This isn’t just a truck… it’s your next upgrade.

2026 GMC Sierra 1500 AT4 Crew Cab 4x4

Duramax Diesel | AT4 Premium | Technology Package | Coastal Dune

The 2026 GMC Sierra AT4 Crew Cab 4x4 is purpose-built for drivers who demand rugged off-road capability without sacrificing premium comfort and advanced technology. Finished in the distinctive Coastal Dune exterior and riding on 20" machined aluminum wheels with Carbon Grey Metallic accents, this AT4 delivers a bold, trail-ready stance with unmistakable GMC presence.

Under the hood is the proven Duramax 3.0L Turbo-Diesel I6, producing 305 horsepower and a class-leading 495 lb-ft of torque. Paired with a 10-speed automatic transmission featuring tow/haul mode, paddle shifters, and grade braking, the Sierra AT4 offers smooth power delivery, exceptional fuel efficiency, and confident towing capability. A 3.23 rear axle and 7200 lb GVWR further reinforce its balanced performance profile.

Inside, the cabin blends durability with refinement. Jet Black perforated leather seats with Kalahari accents create a premium, adventure-focused interior, while front bucket seats and a full centre console provide comfort and smart storage. The 13.4" GMC Infotainment System with Google Built-In keeps navigation, voice assistance, and connectivity intuitive and seamless, with wireless Apple CarPlay and Android Auto included.

This Sierra AT4 is exceptionally equipped with both the AT4 Premium Package and Technology Package, adding standout features such as:

• 15" Multicolour Head-Up Display

• Rear Camera Mirror with full camera display

• Bed View Camera with trailer camera provisions

• Universal Home Remote

• Rear sliding power window

• High-clearance off-road steps

A power sunroof brings open-air driving to every adventure, while black sport steps enhance accessibility and complement the AT4’s aggressive styling. With three years of SiriusXM, advanced camera systems, and thoughtful trailering technology, this Sierra is as confident backing into a tight campsite as it is cruising the highway.

The 2026 GMC Sierra AT4 Crew Cab 4x4 delivers the perfect blend of diesel efficiency, off-road toughness, and modern luxury—built for drivers who expect more from their truck, on-road and far beyond it.

2026 GMC Sierra 1500 AT4 Crew Cab 4x4

The 2026 GMC Sierra AT4 Crew Cab 4x4 delivers uncompromising off-road capability paired with refined comfort and cutting-edge technology. Finished in Sterling Metallic and riding on 20" machined aluminum wheels with Carbon Grey Metallic accents, this AT4 presents a bold, purposeful look that’s equally at home on rugged trails or city streets.

Power comes from the proven Duramax 3.0L Turbo-Diesel I6, producing 305 horsepower and an impressive 495 lb-ft of torque. Matched with a 10-speed automatic transmission featuring tow/haul mode, steering column paddle shifters, and grade braking, this Sierra offers smooth acceleration, excellent efficiency, and confident towing performance. A 3.23 rear axle and 7200 lb GVWR round out a powertrain designed for real-world capability.

Inside, the cabin is both rugged and refined. Jet Black perforated leather seats with Kalahari accents provide premium comfort with an off-road-inspired edge, while front bucket seats and a full centre console add everyday practicality. The 13.4" GMC Infotainment System with Google Built-In places navigation, voice commands, and connected apps at your fingertips, with wireless Apple CarPlay and Android Auto standard.

Equipped with the AT4 Premium Package and Technology Package, this Sierra adds advanced driver-focused features including:

• 15" Multicolour Head-Up Display

• Rear Camera Mirror with full camera display

• Bed View Camera with trailer camera provisions

• Universal Home Remote

• Rear sliding power window

• High-clearance off-road steps

A power sunroof enhances the open-air driving experience, while black sport steps provide easier access and complement the AT4’s aggressive styling. With three years of SiriusXM and intelligent camera systems designed for trailering and cargo management, this Sierra AT4 is built to handle whatever the road or trail demands.

The 2026 GMC Sierra AT4 Crew Cab 4x4 is the ideal truck for drivers who want diesel efficiency, advanced technology, and true off-road confidence—all wrapped in a premium, unmistakably GMC package.

2026 GMC Sierra 1500 Denali Ultimate Crew Cab 4x4

Duramax Diesel | Denali Ultimate | Alpine Umber Interior | Onyx Black

The 2026 GMC Sierra Denali Ultimate Crew Cab 4x4 represents the pinnacle of premium truck design, combining commanding diesel performance with handcrafted luxury and advanced technology. Finished in Onyx Black and riding on striking 22" Ultra-Bright machined wheels with chrome accents, this Denali Ultimate delivers an unmistakable presence that blends strength with sophistication.

Power comes from the renowned Duramax 3.0L Turbo-Diesel I6, producing 305 horsepower and an impressive 495 lb-ft of torque. Paired with a refined 10-speed automatic transmission featuring tow/haul mode, paddle shifters, and grade braking, this Sierra delivers effortless highway cruising, exceptional fuel efficiency, and confident towing capability. A 3.23 rear axle and 7200 lb GVWR ensure performance that’s as capable as it is composed.

Inside, the cabin defines next-level luxury. Alpine Umber full-grain leather seating with front bucket seats and a centre console create an environment more akin to a high-end SUV than a traditional pickup. Premium materials, refined craftsmanship, and quiet ride quality make every drive feel special, whether commuting or covering long distances.

The 13.4" Premium GMC Infotainment System with Google Built-In anchors the dashboard, offering seamless navigation, voice assistance, wireless Apple CarPlay, and Android Auto. Thoughtful comfort touches continue throughout with premium floor liners featuring removable carpet inserts in both the front and rear, blending durability with upscale refinement.

This Denali Ultimate is further distinguished by the Black Badging Package, including black GMC emblems and Sierra nameplates, adding a subtle, aggressive contrast to the polished exterior. A dual exhaust system with chrome tips, 220-amp alternator, and engine block heater round out a truck engineered for both luxury and real-world usability.

The 2026 GMC Sierra Denali Ultimate Crew Cab 4x4 is the ultimate expression of what a premium pickup can be—powerful, refined, and meticulously crafted for drivers who demand the very best.

2026 GMC Sierra AT4 Crew Cab – Duramax Diesel

This is where refinement shakes hands with the wild. The 2026 GMC Sierra AT4 Crew Cab in Onyx Black is built for drivers who want diesel efficiency, off-road grit, and premium comfort… all in one unapologetically bold truck.

3.0L Duramax Turbo-Diesel – Quiet Strength, Serious Torque

Under the hood, this AT4 doesn’t roar… it pulls:

• 3.0L Duramax Turbo-Diesel I6 • 305 horsepower / 495 lb-ft of torque • Smooth, efficient, and built for long hauls

Perfect for towing, road trips, or just enjoying that effortless diesel surge.

10-Speed Automatic – Always in the Sweet Spot

• 10-speed automatic transmission • Tow/haul mode with grade braking • Paddle shifters for control when you want it

It adapts like a seasoned co-pilot, always finding the right gear.

AT4 Off-Road DNA

This Sierra is born to leave the pavement behind:

• All-terrain tires with off-road suspension tuning • Off-Road High Clearance Steps (AT4 Premium Package) • Factory skid protection and rugged stance

From job sites to backcountry trails, it’s ready to wander without hesitation.

Bold AT4 Presence

• 20" machined aluminum wheels with Carbon Grey accents • Onyx Black exterior for a stealthy, commanding look • Signature AT4 design cues throughout

It doesn’t just show up… it makes an entrance.

Premium Interior – Built for the Long Haul

Inside, it’s all about rugged luxury:

• Perforated leather seats with Kalahari accents • Heated comfort and premium finishes throughout • Power sunroof bringing the outside in

It’s the kind of cabin that makes even long drives feel like short ones.

Technology That Works With You

Loaded with smart features:

• 13.4" GMC Infotainment System with Google Built-In • Wireless Apple CarPlay & Android Auto • Multicolour 15" Head-Up Display • Rear Camera Mirror with full display

Everything you need, right where you expect it.

Advanced Visibility & Trailering Tech

• Bed View Camera for cargo and hitch visibility • Rear Camera Mirror for unobstructed rear view • Trailer Camera Provisions

Backing up, hooking up, and hauling out just got easier.

AT4 Premium & Preferred Packages

This truck is stacked with functional upgrades:

• Universal Home Remote • Power rear sliding window • Off-Road High Clearance Steps • Enhanced convenience and usability features

Practical Capability Meets Everyday Use

• Hard folding truck bed cover • Sport steps (black, dealer-installed) • Engine block heater for Canadian winters

Work during the week. Escape on the weekend.

Added Value

• 3 Years of SiriusXM

Why Buy from Boyer Chevrolet Buick GMC Ajax?

At Boyer Chevrolet Buick GMC Ajax, located at 425 Bayly Street West, you’re backed by a team that understands trucks inside and out, with a 4.7-star rating and over 1,500 reviews.

You get:

• Truck experts who understand towing, diesel, and off-road needs • Competitive financing options • A trusted dealership serving Ajax, Whitby, Oshawa & Durham Region • Full support before and after the sale

The Perfect Balance of Muscle & Refinement

If you’re cross-shopping the Chevrolet Silverado ZR2, Ram Rebel, or Ford F-150 Tremor, the 2026 GMC Sierra AT4 Duramax delivers a rare blend of diesel efficiency, off-road capability, and premium comfort.

📞 Call 905-427-2500 📍 Visit Boyer Chevrolet Buick GMC Ajax 📅 Book your test drive today

This one doesn’t just go off-road… it brings luxury with it.

2026 GMC Sierra AT4 Crew Cab – Summit White

Some trucks whisper capability. This one wears it like a badge of honour. The 2026 GMC Sierra AT4 Crew Cab in crisp Summit White is a rugged, diesel-powered machine wrapped in premium detail… equally at home on a job site or a gravel road that forgot where it was going.

Duramax 3.0L Turbo-Diesel – Effortless Muscle

This is torque you feel more than hear:

• 3.0L Duramax Turbo-Diesel I6 • 305 horsepower / 495 lb-ft of torque • Smooth, quiet, and incredibly efficient

It’s the kind of power that makes towing feel like a light suggestion.

10-Speed Automatic – Always Dialed In

• 10-speed automatic transmission • Tow/haul mode with grade braking • Steering column paddle shifters

Whether you’re climbing, towing, or cruising… it never feels out of breath.

AT4 Off-Road Authority

Built with dirt roads and job sites in mind:

• All-terrain tires with off-road suspension tuning • Off-Road High Clearance Steps • Purpose-built AT4 stance and capability

It doesn’t avoid the rough stuff… it seeks it out.

Strong, Clean Presence

• 20" machined aluminum wheels with Carbon Grey accents • Summit White exterior for a bold, clean contrast • Signature AT4 styling throughout

It looks sharp in the city and unstoppable in the wild.

Premium Interior – Rugged Meets Refined

Inside, it’s a balance of durability and comfort:

• Perforated leather seating with Kalahari accents • Heated comfort and upscale finishes • Power sunroof to open up every drive

A cabin designed for long days that don’t feel long.

Technology That Keeps You Ahead

• 13.4" GMC Infotainment System with Google Built-In • Wireless Apple CarPlay & Android Auto • 15" Multicolour Head-Up Display • Rear Camera Mirror with full digital view

It’s like having a command center at your fingertips.

Smart Trailering & Visibility

• Bed View Camera for cargo and hitch alignment • Rear Camera Mirror for clear rear visibility • Trailer Camera Provisions

Hooking up and backing in becomes second nature.

🔧 AT4 Premium & Technology Packages

Loaded with upgrades that matter:

• Universal Home Remote • Power rear sliding window • Advanced display and camera technologies • Off-road enhancements and added convenience

This is where capability meets intelligence.

Built for Real Life

• Hard folding truck bed cover • Black sport steps (dealer-installed) • Engine block heater for cold starts

From workday mornings to weekend escapes… it’s ready.

Added Value

• 3 Years of SiriusXM

Why Buy from Boyer Chevrolet Buick GMC Ajax?

At Boyer Chevrolet Buick GMC Ajax, located at 425 Bayly Street West, you’re backed by a team that understands trucks inside and out, supported by a 4.7-star rating with over 1,500 reviews.

You get:

• Diesel and truck specialists who know capability • Competitive finance and lease options • A trusted dealership serving Ajax, Whitby, Oshawa & Durham Region • Ongoing support from factory-trained technicians

Built to Work. Designed to Roam.

If you’re comparing trucks like the Chevrolet Silverado Trail Boss, Ford F-150 Tremor, or Ram Rebel, the 2026 GMC Sierra AT4 Duramax stands out with its refined diesel power, off-road confidence, and premium interior.

📞 Call 905-427-2500 📍 Visit Boyer Chevrolet Buick GMC Ajax 📅 Book your test drive today

Clean look. Dirty capability. That’s AT4.

2026 GMC Sierra Denali Crew Cab – 6.2L V8 | Sterling Metallic

Think of this one as a tailored suit with steel-toe boots. The 2026 GMC Sierra Denali Crew Cab blends refined luxury with unapologetic V8 performance, delivering a truck that feels equally at home on Bayly Street or blasting up the 401.

Finished in sleek Sterling Metallic and riding on 20" multi-dimensional polished aluminum wheels, this Denali is understated… until you press the throttle.

6.2L V8 Power – Effortless Muscle

Under the hood sits the legendary 6.2L EcoTec3 V8, producing 420 horsepower and 460 lb-ft of torque. This is smooth, confident power that never feels strained.

Paired with a 10-speed automatic transmission, you get:

• Seamless shifting and strong acceleration • Tow/haul mode for confident trailering • Dynamic Fuel Management for improved efficiency

It’s the kind of powertrain that makes everything feel easy, whether you’re towing, passing, or just enjoying the drive.

Performance That Speaks Up

This Sierra Denali isn’t just powerful, it has a voice.

• Performance Air Intake System enhances engine response • Dual Active Sport Exhaust adds a deep, aggressive tone in sport mode

Quiet when cruising. Commanding when you want it. Like flipping a switch from boardroom to backroad.

Denali Interior – Premium Craftsmanship

Inside, the cabin wraps you in Jet Black Forge perforated leather seating, delivering a premium, refined feel across every surface.

Highlights include:

• Heated and ventilated front seats (Denali standard) • Spacious Crew Cab with exceptional rear legroom • Large centre console with practical storage

This is where comfort meets capability, without compromise.

Technology Package – Elevated Awareness

The Technology Package brings advanced visibility and driver-focused innovation:

• 15" Multicolour Head-Up Display projecting key info onto the windshield • Rear Camera Mirror providing a clear, unobstructed rear view

It’s like giving the driver a digital co-pilot.

Next-Level Connectivity

At the centre of the cabin is the 13.4" GMC Infotainment System with Google Built-In, delivering seamless control and connectivity.

Features include:

• Google Maps navigation and voice assistance • Wireless Apple CarPlay & Android Auto • Bluetooth streaming audio • 3 Years of SiriusXM

Everything you need, right where you expect it, without distraction.

Premium Utility & Everyday Function

This Sierra Denali is equipped with practical upgrades that enhance both work and lifestyle:

• Power sunroof bringing light into the cabin • Hard folding truck bed cover for secure cargo management • All-terrain tires for added versatility • Durable, polished 20" wheels for a perfect balance of ride and style

It’s built to handle your day… and elevate it.

Why Buy Your GMC Sierra Denali at Boyer Chevrolet Buick GMC Ajax?

At Boyer Chevrolet Buick GMC Ajax, located at 425 Bayly Street West, we proudly maintain a 4.7-star Google rating with over 1,500 customer reviews. Our reputation is built on trust, transparency, and delivering a premium experience every time.

When you choose Boyer Ajax, you get:

• Competitive finance and lease options • A trusted GMC dealership serving Ajax, Whitby, Oshawa, and Durham Region • Factory-trained technicians and full service support • A team focused on long-term relationships

Book Your Test Drive Today

If you're comparing trucks like the Ford F-150 Lariat, Ram 1500 Limited, or Toyota Tundra Platinum, the 2026 GMC Sierra Denali Crew Cab delivers the perfect balance of power, luxury, and technology.

📞 Call 905-427-2500 📍 Visit Boyer Chevrolet Buick GMC Ajax 📅 Book your test drive today

V8 power. Denali luxury. Everyday confidence.

This is how a truck should feel.