[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 VIN 1GT4UREY7TF376964 · Stock TF376964 ![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 1 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fc9c43642-5c6a-4ede-9030-af37c799ac43.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 2 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F31f99ea3-cf24-4a8d-9840-70b8c9f99682.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 3 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F10e6d48e-fbfa-4f3b-804d-e45a0a98167f.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 4 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fb69c01d1-ba37-4225-a0e1-367d37be97b3.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 5 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F9beeaf57-66fe-43a0-86e9-692da3ab3c49.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 6 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F15fb16c5-1b80-4a67-be7c-71d7de497ed2.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 7 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F97ead175-5631-4c90-8a6b-73ab28bf5907.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 8 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fe4ea9d66-42a3-4ca2-87a6-45b0b0b2f6f6.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 9 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fc37548a4-42a4-4bf9-9f86-3e5457e25053.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 10 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F8a587a29-36d0-4ad6-8b42-efd64db60e9b.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 11 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F976d8111-1b89-4758-ab6e-7d5629bc2810.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 12 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fa8ce75dd-fb59-47a9-96f8-865006c35e22.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 13 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F03cd8416-9534-4aab-865d-8ea50d61ed5c.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 14 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fb71fd516-2919-48d3-86f6-a39619e0b4b0.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 15 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F37049224-a0ba-45fc-8078-d49e70ce8320.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 16 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Faa68baf6-e4e8-43b9-995d-6c3c505661cd.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 17 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fada6d4f8-fa49-4b81-bef6-6bd4f5b761fe.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 18 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F6f74194c-626c-4107-bc0d-c5cb09ce05f8.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 19 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fae38697b-184b-48db-ba58-4dce8b866b4b.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 20 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F74480845-6450-498f-a7a9-8ef8dc123977.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 21 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F5d0706ad-553f-46f0-ab8f-75e42bdcbd18.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 22 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F17c09650-26e9-4d7f-88b6-2284eeeeed34.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 23 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F84a1a9b6-52b8-4156-bdf1-0322245167ef.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 24 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fc55bd766-007f-44f6-8ec0-24563a128230.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 25 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Ffa6fde0f-e5e6-42aa-a5bf-e9052415367d.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 26 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fda508423-b3ca-4b41-af9b-48d6eb02f295.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 27 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fe8c83e37-6331-46dc-814c-c9d6c618cd2e.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 28 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F4a0dca84-6a7a-4701-85f0-f17f3fb701bf.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 29 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F39abb752-9f23-4faa-bb97-2f7723da1b9d.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 30 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F6e0b3247-2ba6-4764-9591-0bbc4bf417ad.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 31 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Ff1bbae29-c103-4b07-8048-9a1021cb7e0b.png&w=3840&q=80)![2026 GMC Sierra 2500HD Denali in Onyx Black, photo 32 of 32](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F00a437c9-b2d3-44a0-b9e5-a4e05f48044a.png&w=3840&q=80) 32 photos MSRP$91,275 Dealer discount−$4,017 **Manufacturer offers**Through Nov 30 Buick & GMC Consumer Cash−$1,500 GMC Bonus Cash−$4,000 Price$81,758 Price excludes tax, title, license and the $225 documentary fee. The offers as the manufacturer names them * Buick & GMC Consumer Cash Program−$1,500 * GMC Bonus Cash−$4,000 [Check availability](/inventory/new-2026-gmc-sierra-2500hd-denali-4wd-4d-crew-cab-1gt4urey7tf376964/?form=availability)[Schedule a test drive](/inventory/new-2026-gmc-sierra-2500hd-denali-4wd-4d-crew-cab-1gt4urey7tf376964/?form=test-drive)[Ask a question](/inventory/new-2026-gmc-sierra-2500hd-denali-4wd-4d-crew-cab-1gt4urey7tf376964/?form=question) [Calculate your payment](https://app.autoapr.com/reveal/4d0nhx37/1GT4UREY7TF376964) ## 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 Onyx Black Interior Black Fuel Diesel ### Equipment 146 #### Packages * Denali Reserve Package * Gooseneck/5th Wheel Prep Package * Preferred Equipment Group 5SA * Technology Package 1 more * 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 * 7 Speakers * AM/FM radio: SiriusXM with 360L * Bose Premium 7-Speaker Sound System * Premium audio system: Premium GMC Infotainment System 14 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 * 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 52 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 Sunroof * LED Cargo Area Lighting * All-Weather Floor Liners * Auto-dimming Rear-View mirror * Floor-Mounted Center Console * Garage door transmitter * Genuine wood dashboard insert * Genuine wood door panel insert * Heated steering wheel * Rear reading lights * Rear seat center armrest * Voltmeter * 12-Way Power Driver Seat Adjuster with Lumbar * 12-Way Power Passenger Seat Adjuster with Lumbar * Forge Perforated Leather-Appointed Front Seat Trim * Front Center Armrest * 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 20 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 Chrome Denali Grille * Spray-on Pickup Bedliner with GMC Logo * Turn signal indicator mirrors * Winter Grille Cover * Wheels: 20" Ultra Bright Machined * 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 * Polished Exhaust Tip * 2-Speed Active Transfer Case * 220-Amp Alternator * Engine Block Heater * Exhaust Brake * Heavy-Duty 80 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 * Power steering * Front anti-roll bar ### From the store Call us at 512-954-9290 This 2026 GMC Sierra 2500HD Denali commands the road with its powerful Duramax 6.6L V8 turbodiesel engine and full 4WD capability. Finished in striking black, this Denali Reserve model combines luxury appointments with serious off-road and towing performance. With ultra-low mileage, it's ready for years of dependable service. Features include: \- Duramax 6.6L V8 turbodiesel with 10-speed automatic \- Denali Reserve Package with signature chrome grille \- Gooseneck/5th wheel prep and X31 off-road package \- Bose premium 7-speaker sound system with SiriusXM \- Multicolor 15-inch head-up display and 360-degree surround vision \- Heated and ventilated leather front seats with power adjusters \- Wireless phone projection and charging \- Bed view camera with trailer camera provisions \- Hill descent control and 2-speed active transfer case \- Remote vehicle starter and push-button start This truck is equipped with advanced safety features including automatic emergency braking, lane departure warning, and trailer side blind zone alert. The technology package delivers OnStar services capability, HD surround vision, and rear cross traffic alert for complete confidence on any journey. Inside, you'll find a heated steering wheel, power sunroof, and deep-tinted glass for ultimate comfort and luxury. The spray-on bedliner protects your investment, while LED cargo lighting and the polished exhaust tip add refined style. This Sierra 2500HD is primed for whatever challenges come your way—whether hauling heavy loads or exploring off-road terrain. We invite you to experience this remarkable truck firsthand. Call us at 512-954-9290 Price includes: $1500 - Buick & GMC Consumer Cash Program. Exp. 11/30/2026 $4000 - GMC Bonus Cash. Exp. 11/30/2026 ## Check availability Close 2026 GMC Sierra 2500HD DenaliStock TF376964 · 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 DenaliStock TF376964 · 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 DenaliStock TF376964 · 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 Denali in Onyx Black](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fa0a9e390-3817-4862-b839-9271452300a5.png&w=3840&q=80)New · Covert Buick GMC Bee Cave2026 GMC Sierra 2500HD DenaliOnyx Black · 4WDMSRP $91,275Total savings $9,517Price$81,758Stock TF374619 · VIN 1GT4UREY2TF374619](/inventory/new-2026-gmc-sierra-2500hd-denali-4wd-4d-crew-cab-1gt4urey2tf374619/)[![2026 GMC Sierra 2500HD AT4 in Sterling Metallic](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F43c9e1eb-6461-46fd-bd07-a6092edddb44.png&w=3840&q=80)New · Covert Buick GMC Bee Cave2026 GMC Sierra 2500HD AT4Sterling Metallic · 4WDMSRP $92,294Total savings $10,264Price$82,030Stock TF350099 · VIN 1GT4UPEY8TF350099](/inventory/new-2026-gmc-sierra-2500hd-at4-4wd-4d-crew-cab-1gt4upey8tf350099/)[![2026 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F41bd4003-9087-4065-a12c-d032219327c5.png&w=3840&q=80)Used · Covert Buick GMC Bee Cave2026 GMC Sierra 2500HD Denali Ultimate41,958 mi · Sterling Metallic · 4WDPrice$79,604Stock F351128A · VIN 1GT4UXEY5TF103865](/inventory/used-2026-gmc-sierra-2500hd-denali-ultimate-4wd-4d-crew-cab-1gt4uxey5tf103865/)[![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 · 4WDMSRP $93,245Total savings $13,352Price$79,893Stock 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 · 4WDMSRP $92,510Total savings $13,161Price$79,349Stock VG411330 · VIN 3C63RRJL0VG411330](/inventory/new-2027-ram-3500-laramie-4wd-4d-crew-cab-3c63rrjl0vg411330/)[![2026 GMC Sierra 3500HD SLE in Onyx Black](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F680bb92d-932f-4606-afe5-17f628ebc9e1.png&w=3840&q=80)New · Covert Buick GMC Bee Cave2026 GMC Sierra 3500HD SLEOnyx Black · 4WDPrice$78,072Stock TF188365 · VIN 1GD5UTEY2TF188365](/inventory/new-2026-gmc-sierra-3500hd-sle-4wd-double-cab-1gd5utey2tf188365/)