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The 2026 GMC Sierra 3500 HD near Pasadena, CA sets a high bar for heavy-duty confidence, blending work-first strength with premium refinement and advanced trailering intelligence. A standard 6.6L V8 gas engine with a 10-speed automatic delivers assured power, while the available Duramax 6.6L Turbo-Diesel V8 and 10-speed automatic transform big jobs with available towing up to 36,000 lbs when properly equipped. Best-in-class HD cargo bed volume, robust Trailering Mirrors, and an integrated Trailer Brake Controller underscore day-to-day utility. Inside, available dual displays — a 13.4-inch center touchscreen paired with a 12.3-inch digital Driver Information Center — help you command every mile, complemented by up to 14 available camera views including Transparent Trailer View. From off-road ready hardware to Denali-grade luxury, the lineup is engineered for purpose and polish. At Reynolds GMC, we make it simple to match capability and comfort for drivers from Pasadena and neighbors in Ontario and Tustin, with ordering, accessories, and service support tailored to your schedule.
Built to take on demanding days with clarity and control, Sierra 3500 HD Pro centers on fundamentals that matter. The standard 6.6L V8 gas engine with a 10-speed automatic transmission works with the Trailering Package, Trailering Mirrors, and an integrated Trailer Brake Controller to deliver steady, predictable towing. Best-in-class HD cargo bed volume helps you load smart, while wireless Apple CarPlay® and wireless Android Auto™ keep your maps, calls, and playlists in easy reach. Choose the available Duramax 6.6L Turbo-Diesel V8 if your work calls for long-haul stamina and low-end torque. Adaptive Cruise Control with trailering is also available to help maintain gaps with poise on busy corridors near Pasadena, CA. Exterior choices such as Summit White or Onyx Black match your brand and your fleet. Inside, durable materials are thoughtfully laid out so switches and tow functions feel natural. If you want straight-ahead strength with modern connectivity, Pro delivers a rock-solid foundation for crews and owner-operators alike.
Sierra 3500 HD SLE upgrades your command center with a 13.4-inch diagonal center touchscreen and a 12.3-inch diagonal digital Driver Information Center, giving you crisp readouts for navigation, trailering status, and drive-mode data. The Traction Select System with Tow/Haul mode lets you tailor responses to load, grade, and conditions, while 17-inch machined aluminum wheels add a confident stance. Available up to 13 camera views — including Transparent Trailer View — boost visibility when changing lanes or aligning to a gooseneck. The available MultiPro™ Tailgate adds six positions for loading, hauling, and workbench duty, and the optional MultiPro Tailgate Audio System by Kicker® makes long days more enjoyable. Add the X31 Off-Road Package with twin-tube Rancho® shocks and skid plates to handle rutted jobsites and fire roads without drama. SLE balances comfort, clarity, and everyday grit with tech that speeds setup, checks connections, and streamlines your routine — a smart step up for businesses growing their capability.
SLT brings premium appointments and precision trailering intelligence to the Sierra 3500 HD playbook. Inside, 10-way power driver and front outboard passenger heated seats with lumbar, plus a heated steering wheel, set the tone for long shifts and colder mornings. The ProGrade® Trailering System with In-Vehicle Trailering App integrates customizable checklists, trailer profiles, and diagnostics you can monitor on the 13.4-inch screen, while 18-inch machined aluminum wheels with dark gray metallic accents sharpen curb appeal. Available 10-way power-adjustable front heated and ventilated bucket seats with perforated leather elevate comfort further, and the available MultiPro Tailgate and MultiPro Tailgate Audio System by Kicker® add flexible, worksite-friendly versatility. For drivers stepping into bigger fifth-wheel or gooseneck jobs, SLT’s comprehensive trailering support helps streamline hookups and on-road awareness. At Reynolds GMC, we pair SLT’s tools and training so you can build trailer profiles, save settings, and roll with confidence from the first mile.
For crews venturing beyond the pavement without sacrificing daily capability, AT4 is the sweet spot. Exclusive Jet Black interior with Kalahari accents pairs with heated and ventilated perforated front leather seating surfaces, creating an upscale command post ready for dusty switchbacks and muddy access lanes. An Off-Road Suspension Package with twin-tube Rancho® shocks and skid plates works with exclusive 20-inch gloss-black aluminum wheels and available BFGoodrich® off-road tires to tackle uneven ground with composure. Up to 14 available camera views with HD Surround Vision help you pick precise lines in tight zones and keep a close eye on trailer position. Adaptive Cruise Control with trailering, when equipped, supports steady gaps during long, undulating highway stretches. Available 15-inch diagonal Head-Up Display with off-road inclinometer provides grade and pitch info at a glance. Whether you are commuting during the week or reaching remote jobsites on weekends, AT4 brings serious traction, clarity, and control in equal measure.
AT4X takes Sierra 3500 HD’s off-road credibility to a new apex with a factory-installed 1.5-inch suspension lift and Multimatic® DSSV dampers that deliver precise damping control over chatter, washboards, and rocky ascents. A rear electronic-locking differential, a larger steel transfer case skid plate, and a front aluminum skid plate form a protective backbone when the trail gets technical. The stance is purposeful on 35-inch Goodyear® Territory MT tires, while Obsidian Rush interior trim featuring full-grain leather seating, technical-grain leather accents, and authentic Vanta ash wood elevates the cabin to adventure-luxury. Up front, 16-way heated and ventilated power seats with a massage feature refresh you between tasks. Pursue even more protection and presence with the available AT4X AEV Edition, which adds stamped steel bumpers, steering gear and transfer case skid plates, and 18-inch Salta gloss-black wheels. Opt for the Duramax 6.6L Turbo-Diesel V8 for low-speed articulation paired with commanding highway pull. We at Reynolds GMC help you tailor AT4X to your routes and terrain.
Signature design and first-class comfort define Denali. Outside, 20-inch Ultra-Bright machined aluminum wheels with bright chrome inserts complement Denali’s confident stance. Inside, Denali-exclusive authentic wood, patterned aluminum trim, and Forge perforated leather seating surfaces create a serene space for long hauls, with 12-way heated and ventilated power front seats for tailored support. Choose the available Duramax 6.6L Turbo-Diesel V8 and 10-speed automatic for authoritative towing, and add a power sunroof to bring in extra light. The available Rear Camera Mirror expands your field of view beyond obstructions, while available camera systems and Transparent Trailer View help maintain effortless awareness of what is happening around your rig. With refined ride quality, premium materials, and integrated trailering intelligence, Denali is equally prepared for customer visits, jobsite duty, and weekend escapes. It is the perfect blend of presence and purpose for drivers who value quiet strength and an upscale, fully connected cabin.
Denali Ultimate is the peak of power and polish, designed for owners who want nothing left on the table. A Signature Vader Chrome grille sets the tone, and exclusive 20-inch Ultra-Bright machined aluminum wheels with gloss-black inserts underscore a commanding stance. Inside, the exclusive Alpine Umber interior features full-grain leather seating, authentic Paldao wood, and 16-way power front seats with a massage feature — a sanctuary that makes long tows feel effortless. The Duramax 6.6L Turbo-Diesel V8 with a 10-speed automatic teams with advanced trailering tools, available up to 14 camera views including Transparent Trailer View, and the ProGrade® Trailering System for supreme confidence. A 12-Speaker Bose® Premium Series with Centerpoint® surround sound and illuminated power assist steps add everyday luxury, while the MultiPro Tailgate Audio System by Kicker® makes setup a pleasure. The 2026 GMC Sierra 3500 HD near Pasadena, CA in Denali Ultimate form turns big jobs into smooth operations and every mile into the premium experience you deserve.
Ready to dial in the exact capability, cabin, and tech configuration that matches how you work and live? Our team at Reynolds GMC will walk you through every detail — from bed and cab choices to camera packages, the MultiPro™ Tailgate, and diesel or gas power — so you get the right build the first time. We will also help you set up trailer profiles and the In-Vehicle Trailering App, review camera angles like Transparent Trailer View, and tailor accessories for cargo management. For a seamless shopping and ownership experience on a 2026 GMC Sierra 3500 HD near Pasadena, CA, count on our product specialists and service advisors to support you at every step, from delivery to your first maintenance visit. If you have questions or want a personalized virtual walkaround, reach out today — we are here to make heavy-duty ownership straightforward, confidence-inspiring, and ready for your next big assignment.
*Images may not show trim level described
