2026 GMC Sierra 3500HD AT4

  • New
  • Diesel
$92,349MSRP
$83,743Castle Sale Price
Castle GMC McHenry

    The overview

    Exterior Color
    Onyx Black
    Interior Color
    Jet Black With Kalahari Accents
    Body/Seating
    Truck/5 seats
    Seats
    5 seats
    Transmission
    10-Speed Automatic
    Drivetrain
    4WD
    Engine
    Duramax 6.6L V8 Turbodiesel
    VIN
    1GT4UVEY9TF393998
    Stock Number
    M260630

      The highlights

      • Lane departure
      • Leather upholstery
      • Automatic temperature control
      • Emergency communication system
      • Premium audio system
      • Wireless phone connectivity
      • Parking sensors
      • Exterior parking camera front
      • Exterior parking camera left
      • Exterior parking camera right
      • Exterior parking camera rear
      • Front dual zone A/C

      A closer look at what’s included

      Included Options
      • SiriusXM with 360L Trial Subscription
      • Preferred Equipment Group 4SB
      • Upfitter Switch Kit (5)
      • 10-Way Power Driver Seat Adjuster with Lumbar
      • Driver Memory
      • Power Sliding Rear Window with Defogger
      • 10-Way Power Passenger Seat Adjuster with Lumbar
      • All-Weather Floor Liners with AT4 Logo
      • Power Front Windows with Passenger Express Up/Down
      • Deep-Tinted Glass
      • Keyless Open and Start
      • Rear Wheelhouse Liners
      • Winter Grille Cover
      • Premium Rear Floor Liners with Removable Carpet Insert
      • Premium Front Floor Liners with Removable Carpet Insert
      • Push Button Start
      • Wireless Charging
      • Electric Rear-Window Defogger
      • Front Rain-Sensing Wipers
      • Power Sunroof
      • Spray-on Pickup Bedliner with GMC Logo
      • Technology Package
      • Floor-Mounted Center Console
      • Auto-Dimming Inside Rearview Mirror with Camera
      • Pickup Bed
      • Gloss Black Header and Grille Insert Bars
      • Safety Alert Seat
      • Radio: AM/FM Stereo with Premium GMC Infotainment System
      • Hill Descent Control
      • Engine Block Heater
      • Exhaust Brake
      • Heated Driver and Front Outboard Passenger Seats
      • Heated 2nd Row Outboard Seats
      • 120-Volt Bed Mounted Power Outlet
      • 120-Volt Instrument Panel Power Outlet
      • Ventilated Driver and Front Passenger Seats
      • 220 Amp Alternator
      • Heavy-Duty 80 Amp-Hour Battery
      • Manual Tilt-Wheel/Telescoping Steering Column
      • 2-Speed Active Transfer Case
      • Skid Plates
      • AT4 Premium Plus Package
      • Sierra HD Pro Safety
      • AT4 Preferred Package
      • Wireless Phone Projection
      • Hitch Guidance with Hitch View
      • Wheels: 20" High Gloss Black 8 Spoke Aluminum
      • 3 Years SiriusXM
      • Black Lug Nut & Wheel Lock Kit
      • Perforated Front Leather Seat Trim
      • Buckle to Drive
      • IntelliBeam Automatic High Beam on/Off
      • Trailer Camera Provisions
      • LED Smoked Amber Roof Marker Lamps
      • 2 Charge/Data USB Ports Inside Center Console
      • 2 USB Ports
      • 2 Charge-Only Rear USB Ports
      • Ultrasonic Front and Rear Park Assist
      • Following Distance Indicator
      • Forward Collision Alert
      • LED Cargo Area Lighting
      • High Idle Switch
      • Rear Cross Traffic Alert
      • Lane Departure Warning System
      • Universal Home Remote
      • Automatic Emergency Braking
      • Steering Wheel Audio Controls
      • Front Pedestrian Braking
      • Trailer Side Blind Zone Alert
      • Bose Premium 7-Speaker Sound System
      • GMC Premium 13.4" Diagonal Information Display
      • Unauthorized Entry Theft-Deterrent System
      • HD Surround Vision
      • Multicolor 15" Diagonal Head-Up Display
      • Bed View Camera with Two Trailer Camera Provisions
      • Front License Plate Kit
      • Off-Road High Clearance Step
      • Snow Plow Prep/Camper Package
      • X31 Off-Road Package
      • Gooseneck/5th Wheel Prep Package
      • Off-Road Suspension
      • 4-Wheel Disc Brakes
      • Emergency communication system: OnStar Services capable
      • Premium audio system: Premium GMC Infotainment System
      • AM/FM radio: SiriusXM with 360L
      • Automatic Pre-Collision Braking
      • Exterior Parking Camera Rear
      • Compass
      • 7 Speakers
      • Auto-dimming Rear-View mirror
      • Ventilated front seats
      • Variably intermittent wipers
      • Turn signal indicator mirrors
      • Trip computer
      • Traction control
      • Tilt steering wheel
      • Telescoping steering wheel
      • Steering wheel mounted audio controls
      • Split folding rear seat
      • Speed-sensing steering
      • Speed control
      • Security system
      • Remote keyless entry
      • Rear window defroster
      • Rear step bumper
      • Rear seat center armrest
      • Rear reading lights
      • Rain sensing wipers
      • Power windows
      • Power steering
      • Power passenger seat
      • Power driver seat
      • Power door mirrors
      • Passenger vanity mirror
      • Passenger door bin
      • Panic alarm
      • Overhead console
      • Overhead airbag
      • Outside temperature display
      • Occupant sensing airbag
      • Memory seat
      • Low tire pressure warning
      • Illuminated entry
      • Heated steering wheel
      • Heated rear seats
      • Heated front seats
      • Heated door mirrors
      • Fully automatic headlights
      • Front wheel independent suspension
      • Front reading lights
      • Front fog lights
      • Front dual zone A/C
      • Front anti-roll bar
      • Dual front side impact airbags
      • Dual front impact airbags
      • Driver vanity mirror
      • Driver door bin
      • Delay-off headlights
      • Bumpers: body-color
      • Brake assist
      • Automatic temperature control
      • Auto-dimming door mirrors
      • Alloy wheels
      • ABS brakes
      • Voltmeter
      • Tachometer
      • Front Center Armrest
      • Front Bucket Seats
      • Electronic Stability Control
      • Air Conditioning
      • 1-touch down
      • 1-touch up
      • Adaptive Cruise Control
      • Air conditioning
      • Auto-dimming rearview mirror
      • Automatic temperature control
      • Driver door bin
      • Driver vanity mirror
      • Emergency communication system: OnStar Services capable
      • Front beverage holders
      • Front dual zone A/C
      • Heated steering wheel
      • Illuminated entry
      • Memory seat
      • Overhead console
      • Passenger door bin
      • Passenger vanity mirror
      • Power windows
      • Proximity key: doors and push button start
      • Rear beverage holders
      • Rear door bins
      • Remote engine start
      • Remote keyless entry
      • Speed control
      • Surround View Monitor
      • Telescoping steering wheel
      • Tilt steering wheel
      • Alloy wheels
      • Front anti-roll bar
      • Front tires: 275/65SR20.0E
      • Front wheel independent suspension
      • Power steering
      • Rear tires: 275/65SR20.0E
      • Single rear wheels
      • Speed-sensing steering
      • Tires: all-terrain
      • Wheel size: 20"
      • 1st row LCD monitors: 2
      • AM/FM radio: SiriusXM with 360L
      • Premium audio system: Premium GMC Infotainment System
      • Primary LCD size: 13.4"
      • Smart device integration
      • Speaker type: Bose
      • Speakers: 7
      • Steering wheel mounted audio controls
      • Turn-by-turn navigation directions: OnStar Turn-by-Turn Navigation
      • Wireless Phone Charger: front
      • Wireless phone connectivity
      • Basic warranty: 36 months/36,000miles
      • Corrosion perforation warranty: 72 months/100,000miles
      • Maintenance warranty: 12 months/ unlimited distance
      • Front center armrest
      • Front seats: bucket
      • Heated front seats
      • Heated rear seats
      • Leather upholstery
      • Max seating capacity: 5
      • Power 2-way driver lumbar support
      • Power 2-way passenger lumbar support
      • Power driver seat
      • Power passenger seat
      • Rear seat center armrest
      • Rear seats: split-bench
      • Rear seats Folding position: fold-up cushion
      • Seat Upholstery: leather
      • Split folding rear seat
      • Ventilated front seats
      • Cylinder configuration: V-8
      • Drive type: four-wheel
      • Electric motor 1 torque: none
      • Electric motor horsepower: none
      • Engine liters: 6.6L
      • Engine location: front
      • Fuel tank capacity: 36.0gal.
      • Hybrid electric powertrain type: none
      • Hybrid system combined power torque: none
      • Hybrid system net power: none
      • Hybrid traction battery type: none
      • Manual-shift auto
      • Mode select transmission
      • Rear locking differential
      • Transmission: 10 speed automatic
      • Variable valve control
      • Ground clearance (min): 284mm (11.2")
      • Auto-dimming door mirrors
      • Bedliner
      • Bumpers: body-color
      • Heated door mirrors
      • Hitch Class: IV
      • Left rear passenger door: conventional
      • Power door mirrors
      • Rear cargo: tailgate
      • Rear step bumper
      • Right rear passenger: conventional
      • Skid plates
      • Trailer hitch
      • Trailer sway control
      • Turn signal indicator mirrors
      • Engine displacement: 6.6 L
      • Exterior body width: 2,079mm (81.8")
      • Exterior height: 2,054mm (80.9")
      • Exterior length: 6,369mm (250.8")
      • Front hiproom: 1,554mm (61.2")
      • Front legroom: 1,131mm (44.5")
      • Front shoulder room: 1,677mm (66.0")
      • Rear headroom: 1,019mm (40.1")
      • Rear hiproom: 1,530mm (60.2")
      • Rear legroom: 1,102mm (43.4")
      • Rear shoulder room: 1,659mm (65.3")
      • Turning radius: 8.0m (26.3')
      • Wheelbase: 4,039mm (159.0")
      • Appearance: digital/analog
      • Auto high-beam headlights
      • Blind spot: warning
      • Compass
      • Configurable
      • Delay-off headlights
      • Exterior parking camera cargo
      • Exterior parking camera front
      • Exterior parking camera left
      • Exterior parking camera rear
      • Exterior parking camera right
      • Front fog lights
      • Front reading lights
      • Fully automatic headlights
      • Lane departure: warning
      • Low tire pressure warning
      • Oil pressure gauge
      • Outside temperature display
      • Parking sensors: front and rear
      • Rain sensing wipers
      • Rear reading lights
      • Rear window defroster
      • Tachometer
      • Trip computer
      • Variably intermittent wipers
      • Voltmeter
      • 4 wheel disc brakes
      • ABS brakes
      • Brake assist
      • Dual front impact airbags
      • Dual front side impact airbags
      • Electronic stability
      • Forward collision: mitigation
      • Front pedestrian detection: prevention
      • Ignition disable
      • Occupant sensing airbag
      • Overhead airbag
      • Panic alarm
      • Perimeter/approach lights
      • Rear collision: warning
      • Security system
      • Traction control
      Onyx Black 2026 GMC Sierra 3500HD AT4 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather.

      Factory MSRP: $92,349


      AT4 Preferred Package (LED Smoked Amber Roof Marker Lamps, Power Sliding Rear Window with Defogger, and Universal Home Remote), AT4 Premium Plus Package (Off-Road High Clearance Step and Power Sunroof), Gooseneck/5th Wheel Prep Package, Preferred Equipment Group 4SB (120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 Charge-Only Rear USB Ports, 2 Charge/Data USB Ports Inside Center Console, 2 USB Ports, 2-Speed Active Transfer Case, Bed View Camera with Two Trailer Camera Provisions, Bose Premium 7-Speaker Sound System, Deep-Tinted Glass, Electric Rear-Window Defogger, Floor-Mounted Center Console, Front Rain-Sensing Wipers, Gloss Black Header and Grille Insert Bars, HD Surround Vision, Heated 2nd Row Outboard Seats, Heated Driver and Front Outboard Passenger Seats, Keyless Open and Start, LED Cargo Area Lighting, Manual Tilt-Wheel/Telescoping Steering Column, Power Front Windows with Passenger Express Up/Down, Premium Front Floor Liners with Removable Carpet Insert, Premium Rear Floor Liners with Removable Carpet Insert, Push Button Start, Rear Cross Traffic Alert, Rear Wheelhouse Liners, Safety Alert Seat, SiriusXM with 360L Trial Subscription, Spray-on Pickup Bedliner with GMC Logo, Steering Wheel Audio Controls, Trailer Camera Provisions, Trailer Side Blind Zone Alert, Ultrasonic Front and Rear Park Assist, Unauthorized Entry Theft-Deterrent System, Ventilated Driver and Front Passenger Seats, Wireless Charging, Wireless Charging, and Wireless Phone Projection), Snow Plow Prep/Camper Package (220 Amp Alternator), Technology Package (Auto-Dimming Inside Rearview Mirror with Camera and Multicolor 15" Diagonal Head-Up Display), X31 Off-Road Package (Hill Descent Control and Off-Road Suspension), 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather, 10-Way Power Driver Seat Adjuster with Lumbar, 10-Way Power Passenger Seat Adjuster with Lumbar, 3 Years SiriusXM, 4-Wheel Disc Brakes, 7 Speakers, ABS brakes, Air Conditioning, All-Weather Floor Liners with AT4 Logo, Alloy wheels, AM/FM radio: SiriusXM with 360L, Auto-dimming door mirrors, Auto-dimming Rear-View mirror, Automatic Emergency Braking, Automatic Pre-Collision Braking, Automatic temperature control, Black Lug Nut & Wheel Lock Kit, Brake assist, Buckle to Drive, Bumpers: body-color, Compass, Delay-off headlights, Driver door bin, Driver Memory, Driver vanity mirror, Dual front impact airbags, Dual front side impact airbags, Electronic Stability Control, Emergency communication system: OnStar Services capable, Engine Block Heater, Exhaust Brake, Exterior Parking Camera Rear, Following Distance Indicator, Forward Collision Alert, Front anti-roll bar, Front Bucket Seats, Front Center Armrest, Front dual zone A/C, Front fog lights, Front License Plate Kit, Front Pedestrian Braking, Front reading lights, Front wheel independent suspension, Fully automatic headlights, GMC Premium 13.4" Diagonal Information Display, Heated door mirrors, Heated front seats, Heated rear seats, Heated steering wheel, Heavy-Duty 80 Amp-Hour Battery, High Idle Switch, Hitch Guidance with Hitch View, Illuminated entry, IntelliBeam Automatic High Beam on/Off, Lane Departure Warning System, Low tire pressure warning, Memory seat, Occupant sensing airbag, Outside temperature display, Overhead airbag, Overhead console, Panic alarm, Passenger door bin, Passenger vanity mirror, Perforated Front Leather Seat Trim, Pickup Bed, Power door mirrors, Power driver seat, Power passenger seat, Power steering, Power windows, Premium audio system: Premium GMC Infotainment System, Radio: AM/FM Stereo with Premium GMC Infotainment System, Rain sensing wipers, Rear reading lights, Rear seat center armrest, Rear step bumper, Rear window defroster, Remote keyless entry, Security system, Speed control, Speed-sensing steering, Split folding rea

      Peace of mind

      Factory warranty

      36 months/36,000miles from the vehicle's original in-service date

      A name you can trust

      Castle Buick GMC is dedicated to your satisfaction before, during, and after your purchase. We'll go the extra mile to take care of you.
      More about us

      KBB.com Consumer Reviews

      Kelley Blue Book Logo0.0out of 5 overall
        Disclaimer: The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.

        1Dealer Discount applied to everyone