Covert Bee Cave, a family tradition since 1909Covert Bee Cave, a family tradition since 1909

Home / New vehicles / GMC / Sierra 2500HD

New · Covert Buick GMC Bee Cave

2026 GMC Sierra 2500HD Denali Ultimate

VIN 1GT4UXEY8TF257812 · Stock TF257812

2026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 1 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 2 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 3 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 4 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 5 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 6 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 7 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 8 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 9 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 10 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 11 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 12 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 13 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 14 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 15 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 16 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 17 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 18 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 19 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 20 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 21 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 22 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 23 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 24 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 25 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 26 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 27 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 28 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 29 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 30 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 31 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 32 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 33 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 34 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 35 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 36 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 37 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 38 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 39 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 40 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 41 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 42 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 43 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 44 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 45 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 46 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 47 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 48 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 49 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 50 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 51 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 52 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 53 of 542026 GMC Sierra 2500HD Denali Ultimate in Onyx Black, photo 54 of 54
54 photos

Details

Engine
6.6L V8 diesel
Transmission
10-speed automatic
Drivetrain
4WD
Engine
Duramax 6.6L V8 Turbodiesel
Body
4D Crew Cab
Exterior
Onyx Black
Interior
Alpine Umber
Fuel
Diesel

Equipment 146

Packages

  • Gooseneck/5th Wheel Prep Package
  • Preferred Equipment Group 5SB
  • Technology Package
  • X31 Off-Road Package

Safety

  • Emergency communication system: OnStar
  • Lane Departure Warning System
  • Security system
  • Unauthorized Entry Theft-Deterrent System
21 more
  • Automatic Emergency Braking
  • Buckle to Drive
  • Following Distance Indicator
  • Forward Collision Alert
  • Front Pedestrian Braking
  • HD Surround Vision
  • Inside Rearview Auo-Dimming Rear Camera Mirror
  • Rear Cross Traffic Alert
  • Ultrasonic Front and Rear Park Assist
  • Safety Alert Seat
  • Traction control
  • 4-Wheel Disc Brakes
  • ABS brakes
  • Dual front impact airbags
  • Dual front side impact airbags
  • Low tire pressure warning
  • Occupant sensing airbag
  • Overhead airbag
  • Brake assist
  • Electronic Stability Control
  • Panic alarm

Technology

  • 12 Speakers
  • 3 Years SiriusXM
  • AM/FM radio: SiriusXM with 360L
  • Bose Premium Series 12-Speaker System
16 more
  • Premium audio system: Premium GMC Infotainment System
  • Radio: AM/FM Stereo with Premium GMC Infotainment System
  • SiriusXM with 360L Trial Subscription
  • Steering Wheel Audio Controls
  • 120-Volt Bed Mounted Power Outlet
  • 120-Volt Instrument Panel Power Outlet
  • Heads-Up Display
  • 2 Charge-Only Rear USB Ports
  • 2 Charge/Data USB Ports Inside Center Console
  • 2 USB Ports
  • Apple CarPlay/Android Auto
  • Multicolor 15" Diagonal Head-Up Display
  • OnStar Services Capable
  • Wireless Charging
  • Wireless Phone Projection
  • Steering wheel mounted audio controls

Interior

  • Automatic temperature control
  • Electric Rear-Window Defogger
  • Front dual zone A/C
  • Rear window defroster
53 more
  • Driver Memory
  • Memory seat
  • Power driver seat
  • Push Button Start
  • Remote Vehicle Starter System
  • Universal Home Remote
  • Manual Tilt-Wheel/Telescoping Steering Column
  • Keyless Open and Start
  • Power moonroof
  • Power Sunroof
  • LED Cargo Area Lighting
  • Auto-dimming Rear-View mirror
  • Floor-Mounted Center Console
  • Garage door transmitter
  • Genuine wood dashboard insert
  • Genuine wood door panel insert
  • Heated steering wheel
  • Leather steering wheel
  • Rear reading lights
  • Rear seat center armrest
  • Voltmeter
  • 16-Way Power Driver Seat Adjuster with Lumbar
  • 16-Way Power Passenger Seat Adjuster with Lumbar
  • Front Center Armrest
  • Full Grain Leather Seat Trim
  • Heated 2nd Row Outboard Seats
  • Heated Driver and Front Outboard Passenger Seats
  • Heated front seats
  • Heated rear seats
  • Power passenger seat
  • Ventilated Driver and Front Passenger Seats
  • Ventilated front seats
  • Power Front Passenger Windows with Express Up/Down
  • Power Sliding Rear Window with Defogger
  • Air Conditioning
  • Power windows
  • Remote keyless entry
  • Speed control
  • Compass
  • Driver door bin
  • Driver vanity mirror
  • Front reading lights
  • Illuminated entry
  • Outside temperature display
  • Overhead console
  • Passenger vanity mirror
  • Tachometer
  • Telescoping steering wheel
  • Tilt steering wheel
  • Trip computer
  • Front Bucket Seats
  • Split folding rear seat
  • Passenger door bin

Exterior

  • Pickup Box
  • Auto High-beam Headlights
  • Front fog lights
  • Auto-dimming door mirrors
18 more
  • Bumpers: body-color
  • IntelliBeam Automatic High Beam on/Off
  • LED Smoked Amber Roof Marker Lamps
  • Rear step bumper
  • Rear Wheelhouse Liners
  • Signature Denali Ultimate Grille in Vadar Chrome
  • Spray-on Pickup Bedliner with GMC Logo
  • Turn signal indicator mirrors
  • Wheels: 20" Ultra-Bright Machined Aluminum
  • Deep-Tinted Glass
  • Front Rain-Sensing Wipers
  • Rain sensing wipers
  • Delay-off headlights
  • Fully automatic headlights
  • Heated door mirrors
  • Power door mirrors
  • Alloy wheels
  • Variably intermittent wipers

Mechanical

  • Off-Road Suspension
  • Speed-sensing steering
  • Front wheel independent suspension
  • Hill Descent Control
14 more
  • 2-Speed Active Transfer Case
  • 220-Amp Alternator
  • Block heater
  • Dual Heavy-Duty 70 Amp Battery
  • Bed View Camera with Two Trailer Camera Provisions
  • Trailer Cam Provisions and Trailer Viewing Software
  • Trailer Side Blind Zone Alert
  • Upfitter Switch Kit (5)
  • Hitch Guidance with Hitch View
  • in-Vehicle Trailering System App
  • Trailer Tire Pressure Monitor Sensors
  • 3.42 Axle Ratio
  • Power steering
  • Front anti-roll bar

From the store

Discover the pinnacle of power and luxury with the 2026 GMC Sierra 2500HD Denali Ultimate. This exceptional heavy-duty pickup is a true testament to uncompromising performance and refined sophistication.

At the heart of this Denali Ultimate lies the robust Duramax 6.6L V8 Turbodiesel engine, mated to a smooth-shifting 10-speed automatic transmission and a capable 4WD system. Boasting a meticulously crafted exterior in a striking Black color, this Sierra 2500HD is a commanding presence on the road.

- Gooseneck/5th Wheel Prep Package

- Preferred Equipment Group 5SB

- Technology Package

- X31 Off-Road Package

- Bose Premium Series 12-Speaker System

- SiriusXM with 360L Trial Subscription

- Steering Wheel Audio Controls

- Electric Rear-Window Defogger

- 120-Volt Bed Mounted Power Outlet

- Push Button Start

- Remote Vehicle Starter System

- Universal Home Remote

This Denali Ultimate is meticulously equipped to elevate your driving experience. The 15" Diagonal Head-Up Display and Wireless Charging keep you connected and in control, while the Ventilated Seats and Heated Steering Wheel provide unparalleled comfort. The Trailer Cam Provisions and Trailer Viewing Software make towing a breeze, and the Ultrasonic Front and Rear Park Assist ensures effortless maneuverability.

Designed to conquer the most demanding terrain, the Sierra 2500HD Denali Ultimate features an Off-Road Suspension, 2-Speed Active Transfer Case, and Hill Descent Control. The Spray-on Bedliner and Rear Wheelhouse Liners provide durable protection for your cargo, while the Signature Denali Ultimate Grille in Vadar Chrome adds a touch of refined style.

Safety is paramount in this Denali Ultimate, with features like the Safety Alert Seat, Rear Cross Traffic Alert, and Trailer Side Blind Zone Alert keeping you and your loved ones secure. The Unauthorized Entry Theft-Deterrent System and the Trailer Tire Pressure Monitor Sensors provide additional peace of mind.

Experience the pinnacle of power, luxury, and capability with the 2026 GMC Sierra 2500HD Denali Ultimate. Visit our showroom today and let us demonstrate how this exceptional truck can elevate your driving experience. Price includes: $2000 - GMC Bonus Cash. Exp. 11/30/2026

Check availability

2026 GMC Sierra 2500HD Denali UltimateStock TF257812 · Covert Buick GMC Bee Cave

An email or a phone number is enough.

By submitting, you agree that Covert Buick GMC Bee Cave may contact you about this request by phone, text or email.

Schedule a test drive

2026 GMC Sierra 2500HD Denali UltimateStock TF257812 · Covert Buick GMC Bee Cave

An email or a phone number is enough.

By submitting, you agree that Covert Buick GMC Bee Cave may contact you about this request by phone, text or email.

Ask a question

2026 GMC Sierra 2500HD Denali UltimateStock TF257812 · Covert Buick GMC Bee Cave

An email or a phone number is enough.

By submitting, you agree that Covert Buick GMC Bee Cave may contact you about this request by phone, text or email.