Work-ready strength comes standard on the 2026 GMC Sierra 3500 HD Pro, matching V8 muscle with trailering essentials and durable, easy-care cabin materials.

• 6.6L V8 gas engine
  • 401 HP and 464 lb.-ft. of torque
• Available 6.6L Duramax® turbo diesel V8 engine
  • 470 HP and 975 lb.-ft. of torque
• Automatic locking rear differential
• Allison® ten-speed automatic transmission
• Hitch guidance
• Integrated trailer brake controller
• All-terrain tires
• 18-in. steel-painted silver wheels
• Animated LED projector headlamps with LED turn signals and daytime running lamps
• LED taillamps
• Vertical trailering mirrors
• Side bed step
• CornerStep rear bumper
• 12 cargo tie-downs
• Vinyl seat upholstery
• 40/20/40 split front bench seat with four-way manual outboard seats and under-seat storage
• 60/40 split-folding rear bench seat (double and crew cab)
• Rubberized vinyl floor covering
• 3.5-in. driver information center
• GMC Infotainment system with 7-in. color touchscreen
• Wireless Apple CarPlay® and Android Auto™
• Six-speaker audio system (double and crew cab)
• Wi-Fi® hotspot capability
• Sierra HD Pro Safety
  • Forward collision alert
  • Following distance indicator
  • Front pedestrian braking
  • IntelliBeam® automatic high beams
  • Lane departure warning
  • Buckle to Drive technology
• Automatic emergency braking
• HD rear vision camera
• Teen Driver technology

Daily-driver convenience distinguishes the 2026 GMC Sierra 3500 HD SLE, featuring cloth seating, easy-to-read digital displays, and household-style outlets for tools and devices.

• 18-in. machined aluminum wheels with dark gray metallic accents
• Power-adjustable vertical trailering mirrors with heated upper glass
• EZ Lift tailgate with power lock and release
• Cloth seat upholstery
• Wrapped steering wheel
• 12.3-in. multicolor digital driver information center
• 13.4-in. GMC Premium
• Infotainment system with Google built-in
• SiriusXM® with 360L capability
• 120V power outlets in cab and bed

Refined comfort and connected trailering technology set the tone inside the 2026 GMC Sierra 3500 HD SLT.

• In-vehicle trailering app
• Rear wheelhouse liners
• LED fog lamps
• Cargo bed LED lighting
• Rainsense™ automatic windshield wipers
• Power-adjustable vertical trailering mirrors with power-folding/extending and auto-dimming upper glass
• Perforated leather front seat upholstery
• Ten-way power front seats, including two-way power lumbar
• Heated front seats
• Driver's memory feature
• Up-level rear seat with storage package
• Heated steering wheel
• Dual-zone automatic climate control
• Auto-dimming rearview mirror
• Remote start

Purpose-built for the trail, the 2026 GMC Sierra 3500 HD AT4 is equipped with dedicated off-road hardware and a comprehensive suite of camera and driver assistance technology.

• Autotrac® two-speed transfer case
• Off-road suspension
• Hill descent control
• Skid plates
• Red recovery hooks
• 20-in. high-gloss black aluminum wheels
• Spray-on bed liner
• GMC MultiPro™ tailgate
• Front bucket seats
• Ventilated front seats
• Heated rear outboard seats
• Bose® seven-speaker premium sound system
• Wireless charging
• Adaptive cruise control
• Front and rear park assist
• HD surround vision
• Trailer side blind zone alert
• Rear cross-traffic alert
• Safety alert seat
• Bed view camera
• Hitch view
• Trailering camera provisions

Chrome-accented styling and first-class cabin appointments give the 2026 GMC Sierra 3500 HD Denali an unmistakable presence at the campground or the client meeting.

• Autotrac two-speed transfer case
• Off-road suspension
• Hill descent control
• Skid plates
• 20-in. ultra-bright machined aluminum wheels with bright chrome inserts
• Signature chrome Denali grille
• 6-in. chrome rectangular assist steps
• Spray-on bed liner
• Power sliding rear window
• GMC MultiPro tailgate
• Front bucket seats
• Forge perforated leather seat upholstery
• 12-way power front seats
• Ventilated front seats
• Heated rear outboard seats
• Universal home remote
• Bose seven-speaker sound system
• Wireless charging
• Adaptive cruise control
• Front and rear park assist
• HD surround vision
• Trailer side blind zone alert
• Rear cross-traffic alert
• Safety alert seat
• Bed view camera
• Hitch view
• Trailering camera provisions

Diesel power leads the way in the 2026 GMC Sierra 3500 HD Denali Ultimate, pairing the standard Duramax engine with full-grain leather seating and a full complement of technology.

• 6.6L Duramax turbo diesel V8 engine
  • 470 HP and 975 lb.-ft. of torque
• Diesel exhaust brake
• 20-in. ultra-bright machined aluminum wheels with gloss black inserts
• Signature Vader Chrome grille
• Power-retractable assist steps with LED perimeter lighting
• Power sunroof
• Full-grain leather seat upholstery
• 16-way power front seats with massage
• Leather-wrapped steering wheel
• 15-in. head-up display
• Bose Premium Series sound system with 12 speakers and CenterPoint®
• MultiPro tailgate audio system by Kicker®
• Rear camera mirror