2026 GMC Sierra 3500 HD Pro

  • New
$67,678$75,090 MSRP
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    The overview

    Exterior Color
    Downpour Metallic
    Interior Color
    Jet Black, Cloth seat trim
    Transmission
    Automatic
    Drivetrain
    4WD
    Engine
    6.6L Duramax Turbo-Diesel V8 engine
    VIN
    1GT4USEYXTF175793
    Stock Number
    26-1281
      • Basic: 3 Years/36,000 Miles
      • Corrosion: 3 Years/36,000 Miles, Rust-Through, 6 Years/100,000 Miles
      • Drivetrain: 5 Years/60,000 Miles, 3.0L & 6.0L Duramax® Turbo-Diesel engines, and certain commercial, government, and qualified fleet vehicles: 5 years/100,000 miles
      • Maintenance: First Visit: 12 Months/12,000 Miles
      • Roadside Assistance: 5 Years/60,000 Miles, 3.0L & 6.0L Duramax® Turbo-Diesel engines, and certain commercial, government, and qualified fleet vehicles: 5 years/100,000 miles
      • Warranty: <<< Preliminary 2026 Warranty >>>
      • Max seating capacity: 6
      • Fuel System: Direct Injection
      • Fuel tank capacity: 36 gal
      • Horsepower: 470
      • Towing capacity: 20000 lbs
      • 6-speaker audio system:
        • Speakers are positioned throughout the cabin for outstanding sound quality and an enjoyable listening experience
      • Bluetooth®:
        • Pair your compatible mobile phone to your vehicle's infotainment system1
        • Place and receive hands-free phone calls
        • Store your phone's contact list in the system to place an outgoing call quickly using the touch-screen display or voice command system
        • With streaming audio capability, you can listen to files stored on your phone or Bluetooth digital media device
      • GMC Infotainment System with color touchscreen:
        • 7" diagonal color touchscreen for customizing and managing entertainment and vehicle feature settings1 on Pro 1SA
        • 8" diagonal color touchscreen for customizing and managing entertainment and vehicle feature settings1 on SLE and Elevation
        • Bluetooth®2 audio streaming for select devices
        • Apple CarPlay™ capability for compatible phones3
        • Android Auto™ capability for compatible phones4
      • Wi-Fi® Hotspot capable:
        • Terms and limitations apply. See onstar.com or dealer for details.
        • May require additional optional equipment
      • Wireless phone projection:
        • For Apple CarPlay™1 and Android Auto™2
      • Animated LED projectors headlamps with LED turn signals and Daytime Running Lamps
      • Black Work steps:
        • Steps make it easier to get in and out of your truck
        • Ribbed surface helps provide secure footing
      • Black beltline moldings
      • Black door handles
      • Black outside power-adjustable vertical trailering mirrors with power folding/manual extending auto-dimming driver upper glass:
        • Lower convex mirrors
        • Heated upper glass
        • Integrated turn signal indicators
        • Puddle lamps
        • Perimeter lighting
        • Auxiliary lighting
        • Extends 3.31-inches
        • May require additional optional equipment
      • Cargo bed LED lighting:
        • Provides light to find cargo in the bed
        • May require additional optional equipment
      • Cargo tie-downs:
        • 12-fixed rated at 500 lbs. per corner
      • Cargo tie-downs (set of 4)
      • Chrome front bumper:
        • May require additional optional equipment
      • Chrome rear bumper:
        • With integrated CornerSteps
        • May require additional optional equipment
      • CornerStep rear bumper:
        • Helps make it easier to get into and out of the pickup bed
        • Located at each end of the rear bumper
        • Textured step pads to help provide secure footing
      • Deep-tinted glass:
        • Provides added protection from sun and glare
      • IntelliBeam:
        • At speeds above 25 mph, can automatically turn vehicle's high beams on and off according to surrounding traffic conditions1
      • LED signature taillamp, with LED stop and reverse light
      • Locking tailgate
      • Side Bed Step:
        • Black textured step pads help provide secure footing
        • Integrated on forward portion of outer bed on driver and passenger side to provide ease of access to forward portion of the bed
      • Smoked Amber LED roof marker lamps:
        • Roof-mounted lamps near the front of the cab
      • Solar-absorbing glass:
        • Helps minimize the amount of solar rays entering the vehicle cabin
      • Spare tire carrier lock:
        • Helps keep spare tire secure
      • Spray-on bedliner:
        • Provides a Black, textured, non-skid surface that helps protect the bed and minimizes cargo shifting
        • Covers the entire bed surface below side rails, front box top rail, gauge hole plugs and tie-downs
        • Chemically bonded, the sprayed-on liner permanently bonds to the truck bed, providing a watertight seal
        • Does not include spray-on liner on tailgate due to Black composite inner panel
        • Includes GMC logo on all trims except PRO
      • Standard tailgate
      • Tailgate and bed rail protection caps
      • Tailgate with EZ Lift assist, power lock & release:
        • Hitch area lighting
        • May require additional optional equipment
      • Winter Grille Cover:
        • May require additional optional equipment
      • 12-volt auxiliary front power outlet:
        • May require additional optional equipment
      • 120-volt box-mounted power outlet:
        • 3-prong auxiliary household-style outlet
        • Located in the pickup bed
        • May require additional optional equipment
      • 120-volt power outlet:
        • 3-prong auxiliary household-style outlet
        • Located on the instrument panel
        • Makes it convenient for powering laptops, phone chargers and other electronic devices
        • May require additional optional equipment
      • 3.5" diagonal monochromatic Driver Information Center
      • 4-way manual driver seat
      • 4-way manual front passenger seat
      • 40/20/40 split-bench front seat with under-seat storage:
        • Seating for up to 3
        • Driver and front passenger seatbacks recline
        • Head restraints at the outboard seating positions
        • Center seatback that doubles as a fold-down armrest with storage
      • 60/40 split-folding rear bench seat:
        • Includes child seat top tether anchor
        • Can fold one or both sides up
      • Assist handles:
        • Front A-pillar mounted for Driver and Passenger
        • Rear B-pillar mounted
      • Compass:
        • Located in instrument cluster
      • Cruise control:
        • Maintains a selected speed while driving
        • Automatically disengages when the vehicle's traction control system needs to limit wheelspin on slippery surfaces or when the StabiliTrak® stability control system detects an oncoming skid
        • Set and resume speed functions
        • Steering-wheel mounted controls to easily maintain and manage cruising speed
      • Instrumentation:
        • 6-gauge cluster
        • Speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure
      • Manual tilt steering column:
        • Allows the steering wheel to be manually adjusted up or down
        • Provides extra comfort when entering or exiting the vehicle
        • Locking security feature
      • Outside temperature display:
        • Located in infotainment display
      • Power door locks:
        • Allows you to lock and unlock doors easily whether it's from the driver or front passenger seat or from outside using the key fob (when equipped)
      • Power windows with driver express-up/down:
        • Quickly raises the window or lowers it with the touch of a button
        • If an obstruction is detected, the anti-pinch feature will auto-reverse
      • Power windows with front passenger express-down:
        • Quickly lowers the window with the touch of a button
        • If an obstruction is detected, the anti-pinch feature will auto-reverse
      • Power windows with rear express-down
      • Rear air vents:
        • Provides cabin comfort for rear occupants
      • Rear window defogger:
        • Utilizes a warming grid to help remove fog or frost from the rear window
      • Rearview mirror with partial video display:
        • Auto dimming with partial video display in rearview mirror
        • Includes a bed camera1 to view cargo bed
        • May require additional optional equipment
      • Remote Keyless Entry:
        • Allows you to lock and unlock doors of the vehicle with the key fob
        • Driver's door or all doors unlock at the touch of a button
        • Includes panic alarm button
        • Includes remote locking tailgate
        • May require additional optional equipment
      • Rubberized vinyl floor covering:
        • Provides good traction and convenient cleanup
      • Single-zone manual climate control:
        • Maintains a selected temperature
      • Steering wheel
      • USB ports:
        • (2) Data/charge ports located on instrument panel1
      • Upfitter switches:
        • Program electrical components such as exterior lighting, snow removal equipment or other features to turn on and off at the flip of a switch
        • Allows the driver to operate upfitter-installed equipment conveniently from inside the cab
        • Provides 3-30 amp and 2 20 amp configurable circuits to facilitate installation of aftermarket electrical accessories by the dealer or upfitter1 at customer expense
        • Installation instructions and technical assistance available at www.gmupfitter.com
        • May require additional optional equipment
      • 10-speed automatic transmission:
        • Tow/Haul mode reduces shift cycling for better control and improved cooling when towing or hauling heavy loads
        • Electronically controlled with overdrive
        • Auto Grade Braking that automatically downshifts when needed to enable engine braking, helping to slow the vehicle on downhill grades and reduce brake wear (operates in Tow/Haul mode)
        • May require additional optional equipment
      • 220-amp alternator:
        • May require additional optional equipment
      • 3.42 rear axle ratio:
        • Requires a diesel engine
      • 4-wheel antilock disc brakes:
        • Help reduce wheel lockup and maintain steering control during hard braking on most slippery surfaces
        • DuraLife™ brake rotors feature a hardened surface to reduce corrosion and provide quieter braking with less vibration. DuraLife™ rotors are hardened and strengthened during the manufacturing process
        • Brake system features a corrosion-fighting process called Ferritic Nitro-Carburizing (FNC) which can double rotor life expectancy and reduce or minimize rust over non-FNC coated rotors
      • 6.6L Duramax Turbo-Diesel V8 engine:
        • 470 hp [350.5 kW] @ 2800 rpm
        • 975 lb-ft of torque [1322 Nm] @ 1600 rpm
        • 3.42 rear axle ratio
        • Exhaust brake
        • Engine block heater
        • Capped fuel fill
        • Paired with an Allison® 10-speed automatic transmission
        • Diesel Exhaust Fluid (DEF) fill located in fuel door
        • Engine after run feature for cooling performance
        • May require additional optional equipment
      • Air filtration monitoring:
        • Alerts the driver when the engine air filter needs replacement
      • Automatic locking rear differential:
        • When the differential senses a significant difference in wheel speed, it locks to turn both rear wheels in unison for added traction
        • The Eaton® Locker senses a difference in wheel speed of approximately 100 rpm
      • Black vertical recovery hooks:
        • Two front frame-mounted1
      • Brake pad wear indicator
      • Capped fuel fill:
        • Requires diesel engine or pickup bed delete
      • Diesel exhaust brake:
        • Reduces the amount of conventional braking needed while towing a heavy trailer or driving downhill
        • Uses the variable vanes in the turbocharger to smoothly and quietly create additional back pressure in the engine to help slow the vehicle
        • Works with the transmission's Tow/Haul mode and Auto Grade Braking to help the driver maintain the desired speed even on long, steep downgrades
        • Switch activated
        • May require additional optional equipment
      • Electronic shift 2-speed transfer case with push button controls:
        • System shift smoothly between drive settings to handle a variety of road conditions
        • 2WD High for most on-road and highway situations
        • 4WD High for snowy or wet roads when added traction is needed
        • 4WD Low for deep sand, mud or snow to provide maximum torque to all 4 wheels
        • May require additional optional equipment
      • Engine block heater:
        • Helps ease cold weather starts
        • Heats the engine and engine block fluids
      • External auxiliary transmission oil cooler:
        • Heavy-duty air-to-oil cooler
        • Helps provides optimal transmission performance even when operating under a heavy load or towing a trailer
        • May require additional optional equipment
      • External engine oil cooler:
        • Heavy-duty air-to-oil cooler
        • Helps extend engine oil life under heavy loads
      • Fully boxed frame:
        • Hydroformed front section
        • High-strength steel
      • Gooseneck / 5th Wheel Prep Package:
        • Hitch platform to accept Gooseneck or 5th wheel hitch
        • Hitch platform with tray to accept ball and stamped box holes with caps installed
        • Box mounted 7-pin trailer harness
        • May require additional optional equipment
      • Heavy-Duty Air Filter:
        • Thick construction helps to trap more dirt before it can enter the air intake
      • Heavy-duty 730 cold-cranking amps battery:
        • 70 Amp-hr
        • Maintenance-free with rundown protection and retained accessory power
      • Integrated trailer brake controller:
        • Integrated with the antilock brake system (ABS)
        • Helps provide measured brake force signaling to electric-controlled trailer brake systems
        • Trailer gain and output are displayed in the Driver Information Center
      • Pickup bed:
        • Roll-formed high-strength steel
        • Includes bed assist step
      • Push Button Start
      • Steering:
        • Recirculating Ball with smart flow power steering system
      • Suspension Package:
        • Designed to help maintain handling and ride quality while towing a trailer or carrying a load
      • PRO Convenience Package:
        • Rear-window defogger
        • EZ Lift power lock and release tailgate
        • Tinted glass
        • LED cargo bed lighting
        • Outside power-adjustable vertical trailering with heated upper glass mirrors (Crew Cab and Double Cab models)
      • Pro Safety Plus Package:
        • Front and Rear Park Assist1
        • Rear Cross Traffic Alert1
        • Lane Change Alert with Side Blind Zone Alert1
        • Trailer mirrors
        • May require additional optional equipment
      • Sierra HD Pro Safety:
        • Forward Collision Alert1
        • Following Distance Indicator1
        • Front Pedestrian Braking1
        • IntelliBeam
        • Lane Departure Warning1
        • Buckle to Drive
        • Automatic Emergency Braking1
      • Trailering Package:
        • Trailer hitch1
        • Trailering hitch platform
        • Includes a 2.5" receiver hitch (with 2" insert), 4-pin and 7-pin connectors
        • 7-wire electrical harness and 7-pin sealed connector for connecting your trailer's lights and brakes to your vehicle
        • Hitch Guidance2
        • May require additional optional equipment
      • Trailering Information Label:
        • Provides max trailer ratings for tongue weight, conventional, gooseneck hitch and 5th wheel hitch
      • LED Daytime Running Lamps
      • Signature LED Daytime Running Lamps
      • 6 airbags:
        • Dual-stage frontal airbags for driver and front outboard passenger1
        • Seat-mounted side-impact airbags for driver and front outboard passenger1
        • Head-curtain airbags for outboard seating positions1
        • Includes front outboard Passenger Sensing System for frontal outboard passenger airbag and illuminates a status light that indicates whether the airbag is on or off1
      • Bed View Camera:
        • Camera in the Center High Mount Stop Lamp (CHMSL) provides an elevated view of the truck bed from the back of the cab1
        • Allows driver to see inside the cargo bed in the rearview mirror to help with 5th wheel or gooseneck hitching and to check cargo
      • Buckle to Drive:
        • Helps remind the driver to buckle their seat belt before driving by preventing the vehicle from being shifted out of PARK temporarily when the driver's seat belt is not buckled
        • The feature also reminds the front passenger to buckle up, if equipped
      • Following Distance Indicator:
        • Displays the following time in seconds between your vehicle and a detected vehicle in front of you1
        • Designed to help you maintain a safe following distance
      • Forward Collision Alert:
        • Warns you if it detects a potential collision with a detected vehicle you're following so you can take action1
        • Can also provide a tailgating alert if you're following a vehicle much too closely
      • Front Pedestrian Braking:
        • At speeds between 5 and 50 mph, can help you avoid or reduce the severity of a collision with a pedestrian it detects directly in front of you1
        • Provides pedestrian alerts and can automatically provide hard emergency braking or enhance driver's hard braking
        • Limited nighttime and low visibility performance
      • Front and Rear Park Assist:
        • Provides alerts of nearby detected vehicles and objects in front of or behind your vehicle1
        • These can help you park and avoid collisions
        • May require additional optional equipment
      • HD Rear Vision Camera:
        • Shows high-resolution digital image of area directly behind your vehicle while in Reverse1
        • Can help you park or avoid vehicles and objects
        • You can also display an overlay of where your vehicle is heading
        • Tailgate must be in the raised position for the HD Rear Vision Camera to operate properly
        • May require additional optional equipment
      • Hitch Guidance:
        • When in Reverse, displays a centered guideline on the Rear Vision Camera view1
        • Can help you line up the hitch to your trailer
        • When driving, lets you check the trailer using Rear Vision Camera view
      • Lane Change Alert with Side Blind Zone Alert:
        • Provides visual side-mirror alerts when a moving vehicle is detected either quickly approaching or already in your side blind zone1
        • Can help you avoid lane change collisions
        • May require additional optional equipment
      • Lane Departure Warning:
        • Alerts you when it detects that you are unintentionally drifting out of detected lane lines1
        • System alerts do not occur if you're using your turn signal, or it detects you may be intentionally leaving your lane
      • OnStar Basics:
        • Drive confidently with core OnStar services including1
          • Remote commands
          • Built-in voice assistance
          • Real-time traffic and navigation
          • Automatic Crash Response
      • OnStar® services capable:
        • See onstar.com for details and limitations. Services vary by model. Service plan required.
      • Rear Cross Traffic Alert:
        • When in Reverse, warns you of detected vehicles crossing behind you1
        • May require additional optional equipment
      • Rear Seat Belt Indicator
      • Rear Seat Reminder:
        • Helps to remind the driver to check the back seat(s) before leaving the vehicle1
        • Activates when rear doors are opened and closed up to 10 minutes before or anytime while your vehicle is on
        • Under certain conditions, once the vehicle is switched off, designed to sound audible chimes and display a visual message within the driver display
        • Activates only once each time the vehicle is turned on and off, and would require re-activation on a second trip
      • Seat Belt Adjustable Guide Loops:
        • Front row only
      • Teen Driver:
        • Helps encourage safe driving habits for teens by providing an in-vehicle report card1
        • Activates certain safety systems, if equipped, when a Teen Driver-designated key fob is used
        • Mutes the radio until the front-seat occupants fasten their seat belts
      • Tire Pressure Monitoring System with Tire Fill Alert:
        • Monitors tire pressure and alerts of an under-inflated condition in one or more of the tires1
        • Provides visual and audible alerts outside the vehicle when inflating an under inflated tire to the recommended tire pressure
      • Automatic Emergency Braking:
        • Can help you avoid or reduce the severity of a collision with a detected vehicle you're following using camera technology1
        • Can automatically provide hard emergency braking or enhance your hard braking
        • Works at speeds between 5 and 50 mph
      • StabiliTrak, electronic stability control system with traction control:
        • Automatically helps enhance control, particularly during emergency maneuvers, by adjusting the brakes and engine torque to help you stay on your intended path
        • Activates when vehicle sensors detect a difference between the driver's intended path and the direction the vehicle is actually travelling
        • Includes Traction Control that detects wheel slippage and applies brake pressure and/or reduces engine power to help the driver maintain control when accelerating on wet or snow-covered roads
        • Includes Brake Assist which detects rapid brake pedal applications due to emergency braking situations and provides additional braking via the Antilock Brake System (ABS) module
        • Includes Trailer Sway Control
        • Hill Start Assist
      Check out this 2026!

      This truck lines up eagerly against competing models, delivering the perfect blend of power, safety and flair! The engine breathes better thanks to a turbocharger, improving both performance and economy. Comfort and convenience were prioritized within, evidenced by amenities such as: lane departure warning, a trailer hitch, and 1-touch window functionality. Smooth gearshifts are achieved thanks to the powerful 8 cylinder engine, and for added security, dynamic Stability Control supplements the drivetrain. Four wheel drive allows you to go places you've only imagined.

      We pride ourselves on providing excellent customer service. Stop by our dealership or give us a call for more information.

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      Optional add-on protection

      • GAP Protection
      • Lifetime Powertrain
      • Tires and Wheels
      • Paint Protection

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      Shea Buick GMC is dedicated to your satisfaction before, during, and after your purchase. We'll go the extra mile to take care of you.
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      KBB.com Consumer Reviews

      Kelley Blue Book Logo4.2out of 5 overall
      • 5.0

        2020 GMC Denali 3500 HD Duramax is a BEAST!

        by Merlinsmerc on Friday, January 22, 2021

        Pulling a conventional 10,000 lb trailer over mountain passes is a whole new experience. Staying at the speed limit up long steep grades did not change the engine temperature. I feathered the accelerator up the mountain. The new 10 speed transmission is so smooth you cant feel it changing gears. This is my second GMC Denali Duramax, first being a 2016. I debated trading in for over a year, and am so happy I made the trade. Trailers always exceed by far the tongue weight posted on them, and in my case it came in at 1450 lbs. That exceeded my trucks posted maximum. The 2020 dually posts a 2,000 lb tongue weight, so now I can front load the trailer, and that reduces sway. If you can afford it, and have a heavy trailer, buy the truck!…
      • 5.0

        Love our truck

        by Ron on Friday, December 11, 2020

        The truck doesn’t have a sun roof which it was suppose to have…
      • 2.0

        In shop for 13 weeks so far!

        by Whip on Monday, September 09, 2024

        My truck has been in the shop for 13 weeks to this point with no end in sight. The Infotainment panel blew out which controls pretty much everything. Nice truck except if something goes wrong then, good luck! I would recommend looking at Fords and Rams and ask the question, how many vehicles do you have in your shop waiting for parts and for how long. I heard of one at my GMC dealership that has been waiting for 8 months! Only thing I get from GM is "we understand your frustration". Apparently they don't, or I would have my truck back long ago.…
      Based on 6 consumer ratings for 2020–2026 models.Privacy