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 1GT4UXEY6TF377401 · Stock TF377401

2026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 1 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 2 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 3 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 4 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 5 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 6 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 7 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 8 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 9 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 10 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 11 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 12 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 13 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 14 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 15 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 16 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 17 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 18 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 19 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 20 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 21 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 22 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 23 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 24 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 25 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 26 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 27 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 28 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 29 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 30 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 31 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 32 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 33 of 342026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic, photo 34 of 34
34 photos

Details

Engine
6.6L V8 diesel
Transmission
10-speed automatic
Drivetrain
4WD
Engine
Duramax 6.6L V8 Turbodiesel
Body
4D Crew Cab
Exterior
Sterling Metallic
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
  • AM/FM radio: SiriusXM with 360L
  • Bose Premium Series 12-Speaker System
  • Premium audio system: Premium GMC Infotainment System
15 more
  • 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
19 more
  • Bumpers: body-color
  • Front License Plate Kit
  • 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

Call us at 512-954-9290

Introducing the 2026 GMC Sierra 2500HD Denali Ultimate, a premium heavy-duty truck engineered for those who demand capability and sophisticated comfort. Finished in striking silver, this truck combines the legendary Duramax 6.6L V8 Turbodiesel engine with intelligent 4WD and a 10-speed automatic transmission to deliver unmatched performance and efficiency. As a brand-new model with minimal mileage, this Denali Ultimate represents the pinnacle of GMC craftsmanship and technology.

Standout features include:

- Gooseneck/5th Wheel Prep Package and X31 Off-Road Package for demanding work

- Bose Premium Series 12-Speaker System with SiriusXM 360L trial subscription

- Bed View Camera with trailer camera provisions and Trailer Side Blind Zone Alert

- HD Surround Vision with Ultrasonic Front and Rear Park Assist

- Multicolor 15" Head-Up Display and wireless phone projection

- 2-Speed Active Transfer Case with Hill Descent Control and Off-Road Suspension

- Heated and ventilated front seats with 16-way power adjustment and lumbar support

- Spray-on pickup bedliner with GMC logo and 120-volt bed-mounted power outlet

- Remote vehicle starter with keyless open and start technology

- Power sunroof and deep-tinted glass

This truck arrives equipped with a comprehensive suite of safety innovations, including automatic emergency braking, forward collision alert, and OnStar services capability. The full grain leather interior, power sliding rear window with defogger, and multiple USB charging ports throughout the cabin provide both luxury and convenience for every journey.

Experience premium truck ownership at its finest. Visit us today to test drive this exceptional Sierra 2500HD Denali Ultimate and discover why discerning buyers choose GMC.

Call us at 512-954-9290 Price includes: $2000 - GMC Bonus Cash. Exp. 11/30/2026

Check availability

2026 GMC Sierra 2500HD Denali UltimateStock TF377401 · 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 TF377401 · 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 TF377401 · 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.