[Home](/) / [New vehicles](/new-vehicles/) / [GMC](/new-vehicles/gmc/) / [Sierra 2500HD](/new-vehicles/gmc/sierra-2500hd/) New · Covert Buick GMC Bee Cave # 2026 GMC Sierra 2500HD Denali Ultimate VIN 1GT4UXEY7TF378265 · Stock TF378265 ![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 1 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fd4d1baa3-a50d-4d35-9ab5-3d3a5976874a.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 2 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F91d93e6a-f160-4d2e-ab26-b1534f605d3c.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 3 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F00d02a28-43a4-43b6-b4a3-dd4a7acabf56.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 4 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F26256813-92cf-4e01-b9e3-1597dad2a21c.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 5 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F045980ef-0dc4-442e-bc84-be7a1763ecb9.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 6 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fc68d0eb7-3181-4545-9993-d125c7682c60.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 7 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Faac3a521-258b-437a-b69a-4350b6cac9ca.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 8 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fae84c1fb-42ba-494d-b929-ddf0a30fc856.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 9 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F655be88e-6e63-4c18-935c-1c2a85e52821.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 10 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fade6b333-c4c4-4058-a45a-920e5a57ba69.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 11 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fc8ec19fb-27a8-4f8b-a01c-381e9212de31.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 12 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F8820ea77-a90e-460e-8545-090982405a73.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 13 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F8e5d7456-9bc8-4467-ab3c-b967dee99f45.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 14 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fde642506-f90a-4766-b134-04df53d7969c.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 15 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F0d991e6b-abfa-42f5-8ce6-ebdf13ac890b.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 16 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F86b150dd-8753-4c58-98c4-46e9ced66cfc.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 17 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F1d22eb24-c91a-45d7-b9a2-ae0d3c362b05.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 18 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fa2714694-ffa4-48bf-8346-638f97eef56f.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 19 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F5542a9f5-f3dd-45c2-9ab1-8158c43a57e7.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 20 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F00d75557-1d82-4fce-8c56-8ca060fb974c.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 21 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fda70f7b7-993e-405d-bc0f-2f7336e0576d.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 22 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F39c6c7f1-351b-4885-a26d-4269bfb73452.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 23 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F6265fdc6-f040-4cf8-a719-28b0d398c553.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 24 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F37873c4e-e9c8-474d-b8db-4bb5e2e1af1b.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 25 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fc14c6ad0-15d6-4f71-9e05-312980643e59.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 26 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F9719deeb-6361-4897-81d5-e516941d971b.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 27 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F393dbbec-6180-4dcf-8b0c-b99442257a75.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 28 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F1554bdf2-54b5-4ae1-8e00-6777022402fe.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 29 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F1d1c2687-3c32-4678-80ef-bc23ae50e7a1.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 30 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Faf4a6aa5-bc6d-4f1d-89e3-adfa7ea41382.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 31 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F0ff3807c-1fef-4581-952d-a6dac6b09c20.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali Ultimate in Glacier White, photo 32 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F9a7972b9-a2d3-4063-baa1-dcd7551b2b34.png&w=3840&q=80) 32 photos MSRP$98,785 Dealer discount−$7,002 **Manufacturer offers**Through Nov 30 GMC Bonus Cash−$2,000 Price$89,783 Price excludes tax, title, license and the $225 documentary fee. [Check availability](/inventory/new-2026-gmc-sierra-2500hd-denali-ultimate-4wd-4d-crew-cab-1gt4uxey7tf378265/?form=availability)[Schedule a test drive](/inventory/new-2026-gmc-sierra-2500hd-denali-ultimate-4wd-4d-crew-cab-1gt4uxey7tf378265/?form=test-drive)[Ask a question](/inventory/new-2026-gmc-sierra-2500hd-denali-ultimate-4wd-4d-crew-cab-1gt4uxey7tf378265/?form=question) [Calculate your payment](https://app.autoapr.com/reveal/4d0nhx37/1GT4UXEY7TF378265) ## Calculate your payment Close [Trading in your car for this GMC Sierra 2500HD?Get an offer for it and put it toward this one.](/value-your-trade/) Covert Buick GMC Bee Cave[(512) 954-9290](tel:+15129549290) 16501 Sweetwater Village Dr Bldg 1, Austin, TX 78738 Sales: Monday to Saturday, 9 AM to 7 PM; closed Sunday ### Details Engine 6.6L V8 diesel Transmission 10-speed automatic Drivetrain 4WD Engine Duramax 6.6L V8 Turbodiesel Body 4D Crew Cab Exterior Glacier White 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 Meet the 2026 GMC Sierra 2500HD Denali Ultimate, a new heavy-duty truck engineered for serious work and refined comfort. Finished in striking Glacier White with Alpine Umber leather seating, this Crew Cab Standard Bed model combines capability with upscale appointments. The legendary Duramax 6.6L V8 Turbodiesel paired with a 10-speed automatic transmission and 4WD delivers the power and control you need for any task, while premium features throughout make every mile comfortable. \- Gooseneck/5th Wheel Prep Package with hitch platform \- Bose Premium Series 12-Speaker System with SiriusXM \- Technology Package with Multicolor 15" Head-Up Display \- X31 Off-Road Package with Hill Descent Control and 2-Speed Active Transfer Case \- Signature Denali Ultimate grille in Vadar Chrome \- HD Surround Vision and Bed View Camera with trailer provisions \- Heated and ventilated front seats with power adjustment \- Power sunroof with wireless charging and phone projection \- 20" ultra-bright machined aluminum wheels \- Spray-on pickup bedliner with GMC logo This Denali Ultimate is loaded with technology and convenience—from the wireless charging pad and projection capabilities to the advanced trailering system and intelligent camera suite. The upscale interior, combined with off-road capability and upfitter switches for custom equipment, makes this truck equally at home on the job site or at your destination. Experience the truck that exceeds expectations by visiting our showroom today. Call us at 512-954-9290 Price includes: $2000 - GMC Bonus Cash. Exp. 11/30/2026 ## Check availability Close 2026 GMC Sierra 2500HD Denali UltimateStock TF378265 · Covert Buick GMC Bee Cave First name Last name Email Phone An email or a phone number is enough. ZIP code (optional) Leave this field empty Check availability 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 Close 2026 GMC Sierra 2500HD Denali UltimateStock TF378265 · Covert Buick GMC Bee Cave First name Last name Email Phone An email or a phone number is enough. ZIP code (optional) Preferred day (optional) Time of day (optional)Any timeMorningAfternoonEvening Leave this field empty Schedule a test drive By submitting, you agree that Covert Buick GMC Bee Cave may contact you about this request by phone, text or email. ## Ask a question Close 2026 GMC Sierra 2500HD Denali UltimateStock TF378265 · Covert Buick GMC Bee Cave First name Last name Email Phone An email or a phone number is enough. ZIP code (optional) Your question Leave this field empty Ask a question By submitting, you agree that Covert Buick GMC Bee Cave may contact you about this request by phone, text or email. ## Similar vehicles in stock [All new vehicles →](/new-vehicles/) [![2026 GMC Sierra 2500HD AT4X in Summit White](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F2f06383f-a8c6-42c4-b3b3-d2583e37f27a.png&w=3840&q=80)New · Covert Buick GMC Bee Cave2026 GMC Sierra 2500HD AT4XSummit White · 4WDPrice$90,338Stock TF372857 · VIN 1GT4UZEY8TF372857](/inventory/new-2026-gmc-sierra-2500hd-at4x-4wd-4d-crew-cab-1gt4uzey8tf372857/)[![2026 GMC Sierra 2500HD Denali Ultimate in Onyx Black](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F4fad55a2-3070-4765-ae9c-d32fbbb98239.png&w=3840&q=80)New · Covert Buick GMC Bee Cave2026 GMC Sierra 2500HD Denali UltimateOnyx Black · 4WDPrice$90,437Stock TF377525 · VIN 1GT4UXEY2TF377525](/inventory/new-2026-gmc-sierra-2500hd-denali-ultimate-4wd-4d-crew-cab-1gt4uxey2tf377525/)[![2026 GMC Sierra 2500HD AT4 in Onyx Black](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F941cdf89-ddf3-47fc-a774-0a1d81d8d5ef.png&w=3840&q=80)New · Covert Buick GMC Bee Cave2026 GMC Sierra 2500HD AT4Onyx Black · 4WDPrice$89,044Stock TF411277 · VIN 1GT4UPEY5TF411277](/inventory/new-2026-gmc-sierra-2500hd-at4-4wd-4d-crew-cab-1gt4upey5tf411277/)[![2027 Ram 2500 Laramie in Black](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fb7a27b12-bf58-4edb-ba20-97ace19a8e2d.png&w=3840&q=80)New · Covert CDJR Bee Cave2027 Ram 2500 LaramieBlack · 4WDPrice$86,233Stock VG409819 · VIN 3C63R5FL9VG409819](/inventory/new-2027-ram-2500-laramie-4wd-4d-crew-cab-3c63r5fl9vg409819/)[![2027 Ram 3500 Laramie in Diamond Black](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F647bfb60-77de-40c5-b011-ae15fca7ea47.png&w=3840&q=80)New · Covert CDJR Bee Cave2027 Ram 3500 LaramieDiamond Black · 4WDPrice$85,673Stock VG411330 · VIN 3C63RRJL0VG411330](/inventory/new-2027-ram-3500-laramie-4wd-4d-crew-cab-3c63rrjl0vg411330/)[![2027 Ram 2500 Limited in Bright White Clearcoat](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fee877593-66a3-4f20-8f39-f566806a7116.png&w=3840&q=80)New · Covert CDJR Bee Cave2027 Ram 2500 LimitedBright White Clearcoat · 4WDPrice$95,693Stock VG418935 · VIN 3C63R5SL4VG418935](/inventory/new-2027-ram-2500-limited-4wd-4d-crew-cab-3c63r5sl4vg418935/)