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New 2026 GMCSierra 2500 HD Pro

In Transit
DIAMOND GMC
Location Details
    Exterior Color
    Onyx Black
    Interior Color
    Jet Black, Cloth seat trim
    Body/Seating
    Truck/6 seats
    Transmission
    Automatic
    Drivetrain
    4WD
    Engine
    6.6L V8 Gas engine
    VIN
    1GT2ULE77TF299489
    Stock Number
    SI26999
    GMC Sierra 2500 HD

    Highlighted Features

    • Lane departure
    • Emergency communication system
    • Wireless phone connectivity
    • Exterior parking camera rear
    • Auto high-beam headlights
    • Split folding rear seat
    • Perimeter/approach lights
    • Remote keyless entry
    • Fully automatic headlights
    • Heated door mirrors
    • Trailer sway control

    Included Packages & Accessories

    Detailed Specifications

    • 1-touch down
    • 1-touch up
    • Air conditioning
    • Driver door bin
    • Emergency communication system: OnStar
    • Front beverage holders
    • Illuminated entry
    • Overhead console
    • Passenger door bin
    • Passenger vanity mirror
    • Power windows
    • Proximity key: push button start only
    • Rear door bins
    • Remote keyless entry
    • Speed control
    • Tilt steering wheel
    • Front anti-roll bar
    • Front tires: 275/70SR18.0E
    • Front wheel independent suspension
    • Power steering
    • Rear tires: 275/70SR18.0E
    • Single rear wheels
    • Tires: all-terrain
    • Wheel size: 18"
    • 1st row LCD monitors: 1
    • AM/FM radio
    • Primary LCD size: 7.0"
    • Smart device integration: Apple CarPlay/Android Auto
    • Speakers: 6
    • Turn-by-turn navigation directions: OnStar Turn-by-Turn Navigation
    • Wireless phone connectivity: Bluetooth
    • Basic warranty: 36 months/36,000miles
    • Corrosion perforation warranty: 72 months/100,000miles
    • Maintenance warranty: 12 months/ unlimited distance
    • Powertrain warranty: 60 months/60,000miles
    • Roadside assistance coverage: 60 months/60,000miles
    • Front center armrest: w/storage
    • Front seats: bench
    • Max seating capacity: 6
    • Rear seats: split-bench
    • Rear seats Folding position: fold-up cushion
    • Seat Upholstery: vinyl
    • Split folding rear seat
    • Compressor: Not Available
    • Cylinder configuration: V-8
    • Drive type: four-wheel
    • Engine liters: 6.6L
    • Engine location: front
    • Fuel tank capacity: 36.0gal.
    • Horsepower: 401hp @ 5,200RPM
    • Hybrid traction battery type: none
    • Manual-shift auto
    • Mode select transmission
    • Number of valves: 16
    • Rear locking differential
    • Recommended fuel: Regular Unleaded
    • Standard fuel economy fuel type: gasoline
    • Torque: 464 lb.-ft. @ 4,000RPM
    • Transmission: 10 speed automatic
    • Variable valve control
    • Ground clearance (min): 258mm (10.2")
    • Bumpers: chrome
    • 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
    • Compression ratio: 10.80 to 1
    • Curb weight: 3,180kg (7,011lbs)
    • Engine bore x stroke: 103.3mm x 98.0mm (4.07" x 3.86")
    • Engine displacement: 6.6 L
    • Engine torque: 464 lb.-ft. @ 4,000RPM
    • Exterior body width: 2,079mm (81.8")
    • Exterior height: 2,031mm (80.0")
    • Exterior length: 6,126mm (241.2")
    • Front headroom: 1,093mm (43.0")
    • Front hiproom: 1,554mm (61.2")
    • Front legroom: 1,131mm (44.5")
    • Front shoulder room: 1,677mm (66.0")
    • GVWR: 4,536kg (10,000lbs)
    • Payload: 1,676kg (3,695lbs)
    • Rear headroom: 1,013mm (39.9")
    • Rear hiproom: 1,530mm (60.2")
    • Rear legroom: 895mm (35.2")
    • Rear shoulder room: 1,648mm (64.9")
    • Towing capacity: 6,577kg (14,500lbs)
    • Turning radius: 7.5m (24.8')
    • Wheelbase: 3,785mm (149.0")
    • Appearance: analog
    • Auto high-beam headlights
    • Compass
    • Delay-off headlights
    • Exterior parking camera rear: HD Rear Vision Camera yes
    • Front reading lights
    • Fully automatic headlights
    • Lane departure: Lane Departure Warning warning
    • Low tire pressure warning
    • Oil pressure gauge
    • Outside temperature display
    • 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: Forward Collision Alert with Automatic Braking mitigation
    • Front pedestrian detection: prevention
    • Ignition disable
    • Occupant sensing airbag
    • Overhead airbag
    • Panic alarm
    • Perimeter/approach lights
    • Tracker system: Stolen Vehicle Assistance
    • Traction control

    Dealer Notes

    Onyx Black 2026 GMC Sierra 2500HD Pro 4WD 10-Speed Automatic 6.6L V8 10-Speed Automatic, 4WD, Jet Blk Clth Vinyl.Recent Arrival! Price includes: $1000 - Purchase Allowance. Exp. 06/01/2026

    KBB.com Consumer Reviews

    Kelley Blue Book - KBB.com
    Overall0.0Out of 5
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      Disclaimer: The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price. We are not responsible for typographical errors. Our pricing changes daily and may not show updated.

      1 Dealer Discount applied to everyone

      MSRP
      $56,980
      Doc Fee
      $595
      $1,000 Purchase Allowance on this 2026 GMC Sierra 2500 HD modelDetails
      -$1,000
      Final Price
      $56,575
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