2026 GMC Sierra 3500 HD Denali

New
Diesel

$93,810Details

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Labadie Buick GMC

Location Details

Call 855-427-1610

Warranty

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 >>>

Powertrain

Fuel System: Direct Injection
Fuel tank capacity: 36 gal
Horsepower: 470

Entertainment

13.4" diagonal GMC Premium Infotainment System with Google built-in:
- 13.4" diagonal GMC Premium Infotainment System with Google built-in, includes multi-touch display, AM/FM/SiriusXM¹ radio capable
- Bluetooth^®2 streaming audio for music and select phones
- Wireless Apple CarPlay^™ capability for compatible phones³
- Wireless Android Auto^™ capability for compatible phones⁴
- Customize and manage entertainment and vehicle feature setting
- Use, control and manage select smartphone apps through the Infotainment system
- Voice-activated technology for phone
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
Bose Premium Sound System:
- 7-speakers with Richbass^® woofer
- Bose is renowned for expert sound engineering and high-quality audio and with premium speakers positioned throughout the cabin
- May require additional optional equipment
SiriusXM with 360L Trial Subscription:
- With your trial subscription, new GM vehicles equipped with SiriusXM with 360L advance in-car technology will bring you closer to your favorite stars, artists, creators, hosts and athletes¹
- SiriusXM with 360L transforms your ride with our most extensive and personalized radio experience on the road that lets you enjoy ad-free music, talk and news, live sports, comedy, podcasts and more
- Experience SiriusXM wherever you go in your vehicle and on the SiriusXM app with personalization features to make discovering your perfect entertainment easier than ever before
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

Exterior

18" LT275/70R18 all-terrain, blackwall spare tire:
- May require additional optional equipment
20" LT275/65R20 all-terrain, blackwall tires
20" Ultra-bright machined wheels with bright chrome inserts with Black painted pockets
6" Chrome rectangular assist steps (factory installed):
- Steps make it easier to get in and out of your vehicle
- Textured step pads help provide secure footing
- May require additional optional equipment
Animated LED Signature Tail lamps with Stop, turn and Reverse lamps
Animated LED projectors headlamps with LED turn signals and Daytime Running Lamps
Body-color front bumper
Body-color rear bumper:
- With integrated CornerSteps
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
Chrome door handles
Chrome mirror caps
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
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
GMC MultiPro Tailgate:
- Six function tailgate designed to help improve loading, unloading and accessing the cargo box
- Hitch area lighting
- Power lock and release
- May require additional optional equipment
IntelliBeam:
- At speeds above 25 mph, can automatically turn vehicle's high beams on and off according to surrounding traffic conditions¹
LED fog lamps
Outside power-adjustable vertical trailering mirrors with power folding/extending auto-dimming driver and passenger upper glass:
- Chrome mirror caps
- AT4 features high gloss Black mirror caps
- Power folding/extending
- Lower convex mirrors
- Heated upper glass
- Integrated turn signal indicators
- Puddle lamps
- Perimeter lighting
- Auxiliary lighting
- Extends 3.31-inches
Polished exhaust tip:
- Requires gasoline engine
Power sliding rear window with rear defogger:
- Utilizes a warming grid to remove fog or frost from the rear window
- The window switch is conveniently located in the overhead console for easy 1-touch operation
- May require additional optional equipment
Power sunroof:
- Opens over the first row at the push of a button
- Retracts into the roof
- Offers tilt and slide features with express-open and -close
- May require additional optional equipment
Rainsense automatic wipers:
- When turned on, will automatically clear the windshield when sensors detect varying degrees of precipitation on the windshield
Rear wheelhouse liners:
- Help protect your truck's rear wheelhouse area from damage caused by dirt, rocks, mud, road salt and the weather
- May require additional optional equipment
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
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
Stainless-steel beltline moldings
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

Interior

12-way power driver seat:
- Includes 8-way power driver seat
- Includes 4-way power lumbar
12-way power front passenger seat:
- Includes 8-way power front passenger seat
- Includes a 4-way power lumbar control
12.3" diagonal color Driver Information Center:
- Includes driver personalization, warning messages and vehicle information
- Replaces traditional analog gauges with fully reconfigurable high definition cluster layout
- High definition display provides crisp, premium appearance
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
13.4" diagonal GMC Premium Infotainment System with Google built-in:
- 13.4" diagonal GMC Premium Infotainment System with Google built-in, includes multi-touch display, AM/FM/SiriusXM¹ radio capable
- Bluetooth^®2 streaming audio for music and select phones
- Wireless Apple CarPlay^™ capability for compatible phones³
- Wireless Android Auto^™ capability for compatible phones⁴
- Customize and manage entertainment and vehicle feature setting
- Use, control and manage select smartphone apps through the Infotainment system
- Voice-activated technology for phone
Adaptive Cruise Control:
- Automatically follows a detected vehicle ahead at a driver-selected following gap¹
- If no vehicle is detected in your path, works like regular cruise control
- You can always override the feature and take control
- Adaptive Cruise Control is compatible with Trailering. It is important to ensure your trailer has functioning brakes while trailering with heavier loads. Read your Owner's Manual to review Trailer Brake requirements and to learn more about the limitations of this system.
All-weather floor liners:
- Provides coverage for first and second-row seating
- Feature a textured, anti-slip pattern that helps trap debris and water while providing carpet coverage
- Include Brand logo
- Replaces factory floor mats
Assist handles:
- Front A-pillar mounted for Driver and Passenger
- Rear B-pillar mounted
Carpeted floor covering:
- Color-keyed to match the interior
Compass:
- Located in instrument cluster
Driver memory:
- Press memory button 1 or 2 to program and recall preferences
- May require additional optional equipment
Dual-zone automatic climate control:
- Automatically maintains the selected temperatures for both the driver and front passenger
- Allows individual climate settings for both driver and front passenger
- Driver and front passenger can choose a temperature up to 30 degrees difference
- May require additional optional equipment
Front bucket seats:
- May require additional optional equipment
Front carpeted floor mats:
- Helps protect your interior from road debris and the elements
- Color-keyed to match the interior
- Denali models feature unique premium tufted carpeting
Front center console:
- Includes reconfigurable feature with cupholders, cell phone storage, power cord management and file holder capacity
- May require additional optional equipment
Head-Up Display:
- Projects vehicle information onto the windshield low in the driver's line of sight to help you keep your eyes on the road¹
- Multi-color 15" diagonal Head-Up Display
- Can select key vehicle information to display including an off-road inclinometer
- Adjustable vertical position and brightness of the display
- May require additional optional equipment
Heated driver and front outboard passenger seats:
- Separate buttons on the climate control panel allow you to choose from 3 levels of warmth
- At the touch of a button you can warm the cushions and seatbacks with multilevel temperature control
- Individually controlled
- Seats can be programmed to automatically warm up when it's cold out
- May require additional optional equipment
Heated rear outboard seats:
- At the touch of a button you can warm the cushions
- Provide comfort in cold weather for passengers in the rear outboard seating positions
- Passengers can manage heat settings with their own controls
- May require additional optional equipment
Heated steering wheel:
- With the press of a button the steering wheel quickly heats up to provide additional comfort on a cold day
- May require additional optional equipment
In-Vehicle Trailering App:
- Checklist¹
- Trailer maintenance reminders
- Trailer security alerts
- Trailer mileage
- Tow/haul reminder
- Trailer electrical diagnostics
- Includes trailer tire pressure monitoring alert ONLY when (PTT) trailer tire pressure monitor system is factory ordered and sensors are installed
Keyless Open and Start:
- With the key fob in your possession, lock and unlock your car's doors by pressing the button on a front exterior door handle, increasing convenience
- Lockout protection helps you avoid locking keys in the vehicle
Manual tilt and telescoping steering column:
- Allows the driver to adjust the steering wheel up or down, and the steering column forward or back
- May require additional optional equipment
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 and front passenger express-up/down:
- Quickly raises the window or lowers it with the touch of a button
- If obstruction is detected, the anti-pinch feature will auto-reverse
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 rear express-down
Rear Camera Mirror:
- Uses a camera to provide you with the option of using a wide and less obstructed view behind your vehicle while driving instead of a traditional rearview mirror¹
- The feature also allows brightness, vertical tilt and zoom adjustments
- May require additional optional equipment
Rear air vents:
- Provides cabin comfort for rear occupants
Rear carpeted floor mats:
- Helps protect your interior from road debris and the elements
- Color-keyed to match the interior
- Denali models feature unique premium tufted carpeting
Rear window defogger:
- Utilizes a warming grid to help remove fog or frost from the rear window
Remote Start:
- Start your vehicle remotely and step into a comfortably warmed or cooled vehicle, depending on the weather and your preset preferences
- Locks doors and turns on parking lamps while the engine is running
- Activates the climate control system
Steering-wheel mounted controls:
- Allow the driver to easily operate the audio system and phone interface controls
- May require additional optional equipment
Theft-deterrent unauthorized entry system:
- Sounds the horn and flashes the turn signals when someone attempts to open the vehicle without the proper key or remote transmitter
- Helps deter unauthorized entry, helping to protect your vehicle
- May require additional optional equipment
USB ports:
- (2) Charge ports located on rear of console¹
USB ports:
- (2) Data/charge ports located inside center console¹
USB ports:
- (2) First row, located on console¹
Universal Home Remote:
- 3-channel programmable
- Conveniently activates compatible devices such as garage door openers, security systems, and home automation devices from inside your vehicle
- May require additional optional equipment
Up-level rear seat with storage package:
- 60/40 Full-length folding bench seat
- Seatback storage on left and right side
- Center fold out armrest with 2 cupholders
- Underseat storage (full cab width)
Ventilated driver and front passenger seats:
- Separate buttons on the climate control panel allow you to choose from 3 levels of fan circulation
- Individually controlled
- Cooling feature includes both seatbacks and cushions
- May require additional optional equipment
Wireless Charging:
- Uses induction technology for select portable electronic devices¹
- Convenient charging location on the top of the center console
- Customers can charge their smartphones while they drive without connecting to any cables
- May require additional optional equipment
Wrapped steering wheel

Mechanical

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
12,100 lbs. GVWR:
- When properly equipped; includes weight of vehicle, passengers, cargo and 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
Autotrac^® 2-speed transfer case with push button controls:
- 4-button control 2WD, Auto, 4WD, 4WD LO
- 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
- When in AUTO mode, remains in 2WD mode until the system detects wheel slippage
- May require additional optional equipment
Brake pad wear indicator
Capped fuel fill:
- Requires diesel engine or pickup bed delete
Chrome vertical recovery hooks:
- Two front frame-mounted¹
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
Digital Variable Steering Assist:
- This system automatically adjusts steering based on speed, road conditions, and other inputs to help reduce driver fatigue
Dual, 220 amp primary and 170 auxiliary amp alternators:
- 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
Off-Road suspension:
- May require additional optional equipment
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

Package

Denali Reserve Package:
- Technology Package¹
- Sunroof
GMC Protection Package:
- All-weather floor liner
- Front and rear Black molded splash guards
Gooseneck Hitch Package:
- Gooseneck ball
- Chain tiedown kit with case
- May require additional optional equipment
ProGrade Trailering System:
- Hitch Guidance with Hitch View
- In-vehicle Trailering App
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
Technology Package:
- Rear Camera Mirror¹
- Multi-color 15" Diagonal Head-Up Display
- AT4 Preferred Package on AT4
- 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
X31 Off-Road Package:
- Off-Road suspension
- Hill Descent Control
- Skid plates
- Twin-tube Rancho shocks

Processing-Other

3 Years OnStar One:
- Safety Services, Wi-Fi, and In-Vehicle Apps, all connected by OnStar¹
- Info at OnStar.com/plans
Trailering Information Label:
- Provides max trailer ratings for tongue weight, conventional, gooseneck hitch and 5th wheel hitch

Safety-Exterior

LED Daytime Running Lamps
Signature LED Daytime Running Lamps

Safety-Interior

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 on the infotainment display to help with 5th wheel or gooseneck hitching and to check cargo
- Includes 2 Trailer Camera Provisions
- May require additional optional equipment
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 Surround Vision:
- Provides selectable digital camera views of the area around your vehicle¹
- Can help you park or avoid vehicles and objects¹
- You can also display a guideline to show where your vehicle is heading¹
- Tailgate must be in the raised position for the HD Rear Vision Camera to operate properly
- Requires Auxiliary Trailer Camera if one of the following camera views is desired: Transparent Trailer, Rear Trailer View, Picture-in-Picture or Inside Trailer View
- 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
Hitch View:
- Shows a close-up view of the trailer hitch¹
- In Reverse, the view can be used to line up your hitch to your trailer
- When driving, the view can be used to check your trailer hitch
- Shifting to Park automatically engages the Electric Parking Brake (if equipped)
- 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
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
Safety Alert Seat:
- Uses left-, right- or both-side driver seat vibration pulses to help you detect and identify the direction of potential crashes¹
- You can also switch to beeping crash avoidance alerts
- May require additional optional equipment
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
Trailer Side Blind Zone Alert:
- Provides visual side-mirror alerts when a moving vehicle is detected in a side blind zone that is extended to trailer lengths¹
- May require additional optional equipment
Trailering camera provisions:
- Includes connector for accessory wiring harness

Safety-Mechanical

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
Hill Descent Control:
- Uses antilock braking to help provide a smooth, controlled descent
- Helps driver maintain control of the vehicle without depressing the brake pedal
- Activates by pushing a button below the instrument panel
- May require additional optional equipment
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

This vehicle won't be on the lot long!

An American Icon. The engine breathes better thanks to a turbocharger, improving both performance and economy. It includes leather upholstery, power front seats, an outside temperature display, and 1-touch window functionality. It features four-wheel drive capabilities, a durable automatic transmission, and a powerful 8 cylinder engine.

We have the vehicle you've been searching for at a price you can afford. Stop by our dealership or give us a call for more information.

A name you can trust

Labadie 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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2026 GMC Sierra 3500 HD Denali

The overview

The full specifications

Warranty

Seats and Trim

Powertrain

Specs and Dimensions

Entertainment

Exterior

Installed Equipment

Interior

Mechanical

Package

Processing-Discounts

Processing-Other

Safety-Exterior

Safety-Interior

Safety-Mechanical

Notes from the dealer

Peace of mind

A name you can trust

KBB.com Consumer Reviews

2020 GMC Denali 3500 HD Duramax is a BEAST!

Love our truck

In shop for 13 weeks so far!

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2026 GMC Sierra 3500 HD Denali

The overview

The full specifications

Warranty

Seats and Trim

Powertrain

Specs and Dimensions

Entertainment

Exterior

Installed Equipment

Interior

Mechanical

Package

Processing-Discounts

Processing-Other

Safety-Exterior

Safety-Interior

Safety-Mechanical

Notes from the dealer

Peace of mind

A name you can trust

KBB.com Consumer Reviews

2020 GMC Denali 3500 HD Duramax is a BEAST!

Love our truck

In shop for 13 weeks so far!