2026 GMC Sierra 1500 SLT

  • New
  • Diesel
$63,945$68,695 MSRP
Buick GMC of Mahwah
Location Details
Call 201-335-6202
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    The overview

    Exterior Color
    Onyx Black
    Interior Color
    Jet Black, Perforated leather-appointed front outb
    Fuel Economy
    22/26 MPG City/Hwy
    Transmission
    Automatic
    Drivetrain
    4WD
    Engine
    3.0L Duramax® Turbo Diesel engine
    VIN
    3GTUUDE86TG261659
      • 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, Sierra TurboMaxTM engines, 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, Sierra TurboMaxTM engines, 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: 24 gal
      • Horsepower: 305
      • Towing capacity: 8700 lbs
      • 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, you'll get rich, concert-like sound
        • 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
      • Steering-wheel mounted controls:
        • Allow the driver to easily operate the audio system and phone interface controls
        • May require additional optional equipment
      • Wi-Fi® Hotspot capable:
        • Terms and limitations apply. See onstar.com or dealer for details.
        • May require additional optional equipment
      • Wireless Apple CarPlay/Wireless Android Auto capability for compatible phones:
        • Can use Apple CarPlay1 and Android Auto2 wirelessly
        • Apple CarPlay vehicle user interface is a product of Apple and its terms and privacy statements apply. Requires compatible iPhone and data plan rates apply. Apple CarPlay is a trademark of Apple Inc. Siri, iPhone and Apple Music are trademarks for Apple Inc, registered in the U.S. and other countries.
        • Vehicle user interface is a product of Google and its terms and privacy statements apply. To use Android Auto on your car display, you'll need an Android phone running Android 6 or higher, an active data plan, and the Android Auto app. Google, Android and Android Auto are trademarks of Google LLC.
      • 17" 255/80R17SL all-season, blackwall spare tire
      • 17" full-size spare steel wheel with Black finish
      • 20" 275/60R20 all-season, blackwall tires
      • 20" Polished aluminum wheels with technical gray painted accents
      • 6" chrome rectangular full length assist steps:
        • Wheel to wheel, provides easier access to the front of the truck bed closest to the cab
        • Steps make it easier to get in and out of your vehicle
        • Textured step pads help provide secure footing
        • Extends from wheel well to wheel well
      • Cab-mounted cargo area lamps:
        • With switch in switch bank left of the steering wheel
        • Illuminates the cargo bed area
      • Cargo bed LED lighting:
        • Provides light to find cargo in the bed
        • Rear pillar lamps
      • Chrome door handles
      • Chrome front bumper
      • Chrome mirror caps
      • Chrome rear bumper:
        • With integrated CornerSteps
      • 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 license plate bracket:
        • Front bracket is included if displaying a front license plate is required in your state
      • Full chrome surround window moldings
      • GMC MultiPro Tailgate:
        • Six function tailgate designed to help improve loading, unloading and accessing the cargo box
      • Heated, power, driver-side auto-dimming, power-folding outside mirrors:
        • Puddle lamps
        • Perimeter lighting
        • Memory setting
      • IntelliBeam:
        • At speeds above 25 mph, can automatically turn vehicle's high beams on and off according to surrounding traffic conditions1
        • May require additional optional equipment
      • LED fog lamps:
        • Help minimize glare in adverse driving conditions
      • LED reflector (high intensity) headlamps with Fade-on/ Fade-off animation, LED turn signals and Daytime Running Lamps:
        • C-shaped LED headlamps with signature lighting and innovative light blade technology
      • Perimeter Lighting
      • Power sliding rear window with rear defogger:
        • Helps to keep your rear view clear of fog or frost
        • 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:
        • Turn on automatically 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
      • Spare tire carrier lock:
        • Helps keep spare tire secure
        • Utilizes the same key as the door and ignition
      • 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 logo on all trims except PRO
      • Tailgate and bed rail protection caps
      • Tailgate with EZ Lift assist, power lock & release:
        • Hitch area lighting
        • May require additional optional equipment
      • 10-way power driver seat with power lumbar:
        • Moves the seat forward and back, and up and down
        • Tilt the seat cushion and seatbacks
      • 10-way power front passenger seat:
        • Forward and back
        • Up and down
        • Tilt seat cushion back and upright
        • Recline seatback up and down
        • Includes 2-way power lumbar
      • 12.3" diagonal color Driver Information Center:
        • Includes driver personalization, warning messages and vehicle information
        • Allows drivers to personalize vehicle features, including warning messages and vehicle information
      • 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 multicolor reconfigurable Infotainment screen
      • 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
        • May require additional optional equipment
      • All-weather floor liners:
        • Feature a textured, anti-slip pattern that helps trap debris and water while providing carpet coverage
        • Include Brand logo
        • Provides coverage for first and second-row seating
        • 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:
        • Recalls 2 driver presets for 10-way power seat and outside mirrors
        • 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
      • Front bucket seats:
        • Includes center console
        • 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 model has unique premium carpet
        • Denali Ultimate model has premium floor mats with corner applique
      • Front center console:
        • Includes reconfigurable feature with cupholders, cell phone storage, power cord management, file holder capacity, removable storage tray and Wireless Charging1
        • 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
      • Heated rear outboard seats:
        • At the touch of a button you can warm the cushions and seatbacks
        • Provide comfort in cold weather for passengers in the rear outboard seating positions
        • 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
      • Inside rearview auto-dimming mirror:
        • Automatically dims the inside rearview mirror when it senses bright light from behind
        • When headlamp glare is no longer detected, the mirror returns to its normal state
      • Keyless Open and Start:
        • With the Keyless Entry fob in your possession, conveniently locks and unlocks your car's doors without manually activating the key fob
        • With the vehicle in Park or Neutral, press the brake pedal and then press the start/stop button to start the vehicle; the button will illuminate
        • Shift to Park and press the start/stop button to turn off the vehicle
      • Outside temperature display:
        • Located in infotainment display
      • Power door locks:
        • Programmable
        • 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
      • Power tilt and telescoping steering column:
        • Allows the driver to adjust the steering wheel up or down, and the steering column forward or back
        • Use the driver memory to save and recall memory settings
        • Provides extra comfort when entering or exiting the vehicle
        • May require additional optional equipment
      • Power windows:
        • Driver with express-up/down
        • May require additional optional equipment
      • Power windows:
        • Front passenger with express-up/down
        • May require additional optional equipment
      • Power windows with rear express-down:
        • 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 model has unique premium carpet
        • Denali Ultimate model has premium floor mats
      • Rear window defogger:
        • Helps to keep your rear view clear of fog or frost
        • 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
      • 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
      • USB ports:
        • (2) Charge ports located on rear of console1
      • USB ports:
        • (2) Data/charge ports located on instrument panel1
      • 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 portable electronic devices
        • Convenient charging location at the front of the center console
        • Device may require optional case for phones that are compatible
        • Customers can charge their smartphones while they drive without connecting to any cables
        • May require additional optional equipment
      • Wrapped steering wheel
      • 10-speed automatic transmission with Electronic Precision shift and front bucket seats:
        • Electronically controlled transmission with overdrive and Driver Shift Control
        • Tow/Haul mode reduces shift cycling for better control and improved cooling when towing or hauling heavy loads
        • Powertrain Grade Braking
          • Automatically uses the engine and transmission to slow the truck to maintain desired speeds when driving downhill
          • Reduces brake wear and increases vehicle control
        • Cruise Grade Braking
          • Downshifts automatically to slow the truck as it drives downhill if it exceeds the cruise set speed by a certain amount
        • May require additional optional equipment
      • 220-amp alternator:
        • May require additional optional equipment
      • 3.0L Duramax® Turbo Diesel engine:
        • 305 hp [227 kW] @ 3750 rpm
        • 495 lb-ft of torque [671 Nm] @ 2750 rpm
        • Paired with a 10-speed automatic transmission
      • 3.23 rear axle ratio:
        • May require additional optional equipment
      • 4-wheel antilock disc brakes:
        • Help reduce wheel lockup and maintain steering control during hard braking on most slippery surfaces
        • Duralife brake rotors have better resistance to corrosion to increase rotor life, minimize brake pulsation, and improve aesthetic appearance
      • 7,200 lbs. GVWR:
        • When properly equipped; includes weight of vehicle, passengers, cargo and equipment
      • Aluminized stainless-steel muffler and tailpipe
      • Automatic Stop/Start:
        • At complete stops, when drivers keep their foot on the brake pedal, and under certain conditions, the engine shuts off
        • When drivers remove their foot from the brake, the engine automatically restarts
        • Under certain circumstances, the engine will not shut off at a complete stop
        • This feature can be disabled with a switch on the center stack
      • 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
      • Cargo tie-downs (12)
      • Electric Power Steering:
        • Electric, rack-mounted with variable assist
        • Increases or decreases the amount of assist depending on the steering wheel angle
        • The system delivers great on-center precision and confident performance at higher speeds
        • Steering assist is greater during low-speed maneuvers, such as parking
      • Electronic Transmission Range Selector:
        • Console mounted
        • Includes steering column paddle shifters
        • 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 prevent possible engine oil breakdown under heavy loads
      • Fully boxed frame:
        • Hydroformed front section
        • High-strength steel
      • Heavy-duty 730 cold-cranking amps battery:
        • 80 Amp-hr
        • Maintenance-free with rundown protection and retained accessory power
        • May require additional optional equipment
      • Heavy-duty 850 cold-cranking amps battery:
        • 95 Amp-hr
        • Maintenance-free with rundown protection and retained accessory power
        • May require additional optional equipment
      • High-Capacity Suspension Package:
        • 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
      • Push Button Start
      • Single-outlet exhaust:
        • May require additional optional equipment
      • Single-speed Autotrac Transfer Case:
        • 3 Transfer Case modes
        • 2WD HI mode
          • Vehicle operates in 2-wheel drive
          • In this mode the transfer case & front driveline hardware are disengaged to improve fuel economy
          • Suitable for routine driving on all road surfaces
        • 4WD Auto mode
          • 4WD Auto enables the transfer-case to provide the performance benefits of a full time active AWD system
          • The 4WD Auto controls automatically adjust torque in response to parameters such as driver inputs, wheel slip control, vehicle dynamic state (understeer/oversteer)
          • Ideal for wet or wintry conditions, but can be used on any road surface. Suitable for light off road usage
        • 4WD HI mode
          • Transfer case engages front driveline and power is transferred to both the front & rear axles
          • In 4WD HI the transfer case clutch maintains higher preemptive torque levels for increased traction vs 4WD Auto
          • Suitable for use on slippery road surfaces or off-road conditions such as deep sand, snow or rough terrain
        • Terrain mode
          • 4WD HI and provides improved low speed traction and vehicle control during off road driving
      • GMC Pro Safety:
        • Forward Collision Alert1
        • Following Distance Indicator1
        • Front Pedestrian Braking1
        • Lane Keep Assist with Lane Departure Warning1
        • Automatic Emergency Braking1
        • Buckle to Drive1
        • IntelliBeam1
        • Safety Alert Seat1 on AT4, AT4X, Denali and Denali Ultimate
        • Enhanced Automatic Emergency Braking1 is standard on Denali and Denali Ultimate2
      • SLT Convenience Package:
        • Bucket seats
        • Center console
        • Heated and ventilated front seats
        • USB ports1 in center console
        • Wireless Charging2
        • Bose®3 Premium Sound System with Richbass® woofer
        • Power Rake/ Telescoping steering column
      • SLT Preferred Package:
        • Adaptive Cruise Control1
        • Power rear sliding window
        • Universal Home Remote
        • Heated rear outboard seats
        • May require additional optional equipment
      • Trailering Package:
        • Trailer hitch1
        • Trailering hitch platform
        • Includes a 2" receiver hitch, 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
      • LED Daytime Running Lamps:
        • Daytime Running Lamps automatically illuminate signature lighting
      • 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
      • 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
        • 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
        • May require additional optional equipment
      • 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
        • 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 Keep Assist with Lane Departure Warning:
        • Uses a brief steering wheel turn to alert you when it detects you are unintentionally drifting out of your lane lines1
        • System alerts do not occur if you're using your turn signal, or it detects you may be intentionally leaving your lane
        • You may receive additional Lane Departure Warning alerts if needed
        • May require additional optional equipment
      • 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
      • Tire Pressure Monitoring System with Tire Fill Alert:
        • Monitors the pressure in each tire and alerts you if there is a low-pressure 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
        • Properly inflate tires to help optimize your vehicle's ride, handling and efficiency
      • 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
        • 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 that senses how hard and fast a driver hits the brake pedal and gives extra braking assistance, if required
        • Includes Trailer Sway Control
        • Hill Start Assist
      Check out this 2026!

      This vehicle sets a new standard in its segment, merging power and utility with stylish proportions! A turbocharger is also included as an economical means of increasing performance. The following features are included: heated and ventilated seats, a bedliner, and power seats. It features four-wheel drive capabilities, a durable automatic transmission, and a 3 liter 6 cylinder engine.

      Our sales reps are knowledgeable and professional. We'd be happy to answer any questions that you may have. Come on in and take a test drive!

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      Buick GMC of Mahwah 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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