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2026 GMC Sierra 3500 HD Pro
- New
The overview
- Exterior Color
- Summit White
- Interior Color
- Jet Black, Cloth seat trim
- Transmission
- Automatic
- Drivetrain
- 4WD
- Engine
- 6.6L V8 Gas engine
- VIN
- 1GT4USE74TF127424
- Stock Number
- C683
The full specifications
- 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: 401
- Towing capacity: 16000 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
- 18" LT275/70R18 all-terrain, blackwall spare tire:
- May require additional optional equipment
- 18" LT275/70R18 all-terrain, blackwall spare tire:
- May require additional optional equipment
- 18" LT275/70R18E all-terrain, blackwall tires
- 18" steel painted Silver wheels
- Animated LED projectors headlamps with LED turn signals and Daytime Running Lamps
- Black beltline moldings
- Black door handles
- Black outside vertical trailering mirrors:
- Lower convex mirrors
- Manual folding/extending
- Extends 3.31-inches
- Cargo tie-downs:
- 12-fixed rated at 500 lbs. per corner
- 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
- Front and rear Black molded splash guards:
- Help protect the exterior of your vehicle from tire splash and road debris
- Custom molded to match the exterior of your vehicle for an integrated, stylish appearance
- Fit directly behind the wheels
- Rear splash guards include brand logo
- Front license plate bracket:
- Front bracket is included if displaying a front license plate is required in your state
- IntelliBeam:
- At speeds above 25 mph, can automatically turn vehicle's high beams on and off according to surrounding traffic conditions
- LED signature taillamp, with LED stop and reverse light
- Locking tailgate
- Manual 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
- 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
- 12-volt auxiliary front power outlet:
- 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
- Inside rearview manual day/night mirror:
- Adjust the tilt of the mirror to help reduce glare during nighttime driving
- 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
- 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
- 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)
- 11,700 lbs. GVWR
- 220-amp alternator:
- May require additional optional equipment
- 3.73 rear axle ratio:
- Requires a gas 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 V8 Gas engine:
- 401 hp [299 kW] @ 5200 rpm
- 464 lb-ft of torque [629 N-m] @ 4000 rpm
- 3.73 rear axle ratio
- Paired with an Allison® 10-speed automatic transmission
- Capless fuel fill
- 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
- Capless fuel fill:
- Prevents paint scratches that can result from a tethered fuel cap
- Creates a tight seal around the fuel-pump nozzle when the nozzle is fully inserted
- Requires gasoline engine
- 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 720 cold-cranking amps battery:
- 80 Amp-hr
- Maintenance-free with rundown protection and retained accessory power
- May require additional optional equipment
- 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
- Skid plates:
- Help protect the front underbody, oil pan and transfer case
- May require additional optional equipment
- 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
- Gooseneck Hitch Package:
- Gooseneck ball
- Chain tiedown kit with case
- 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
- Snow Plow Prep / Camper Package:
- Power feed to accommodate a backup and roof emergency light1
- A single 220-amp alternator
- Heavy-duty front springs
- Under body skid plates to help protect the transfer case from debris
- May require additional optional equipment
- 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
- 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
- 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 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 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
Notes from the dealer
This 1 ton pickup's Lane Departure Warning helps keep you in your lane. Protect this unit from unwanted accidents with a cutting edge backup camera system. This GMC Sierra has four wheel drive capabilities. Keep safely connected while in the vehicle with OnStar. You may enjoy services like Automatic Crash Response, Navigation, Roadside Assistance and Hands-Free Calling. Greater towing safety becomes standard with the installed trailer brake. This vehicle has a V8, 6.6L high output engine. Electronic Stability Control is one of many advanced safety features on this model. Easily set your speed in this unit with a state of the art cruise control system. Increase or decrease velocity with the touch of a button. The high efficiency automatic transmission shifts smoothly and allows you to relax while driving. This unit is equipped with a gasoline engine. This one-ton is ready for all your hauling needs.
Peace of mind
A name you can trust
GM of Butte is dedicated to your satisfaction before, during, and after your purchase. We'll go the extra mile to take care of you.
More about usKBB.com Consumer Reviews
4.2out 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.