Drivers in Lakeland, Polk County, and across Central Florida choose the Regal Automotive Group for a wide selection of new vehicles and a dealership experience built around convenience and transparency. With multiple locations in Lakeland, Regal makes it easy to find the right vehicle to fit your lifestyle.
This 2026 GMC Sierra 3500HD Denali is a true powerhouse, equipped with a Duramax 6.6L V8 Turbodiesel engine that delivers an impressive 470 horsepower and an incredible 975 lb-ft of torque. Paired with a 10-speed automatic transmission and a robust 4WD system, this Sierra is ready to tackle any job or adventure you have in mind.
- 6.6L V8 Diesel Turbocharged (Duramax) (B20-Diesel Compatible) (470 hp [350.5 kW] @ 2800 rpm, 975 lb-ft of torque [1322 Nm] @ 1600 rpm) (Includes (K05) engine block heater.)
- Gooseneck/5th Wheel Prep Package
- Preferred Equipment Group 5SA
- Technology Package
- X31 Off-Road Package
The Sierra 3500HD Denali is more than just a powerful workhorse; it's a premium-appointed truck that pampers you with an array of advanced features. From the Bose Premium 7-Speaker Sound System to the heated and ventilated front seats, this Denali model is designed to provide a truly luxurious driving experience.
Step inside and you'll be greeted by a stunning interior that blends elegant wood accents with premium leather seating. The 13.4-inch diagonal GMC Premium Infotainment System and 15-inch Multicolor Head-Up Display keep you connected and informed, while the Wireless Charging and Wireless Phone Projection make it easy to stay powered up on the go.
When it comes to safety, the Sierra 3500HD Denali has you covered. Features like Forward Collision Alert, Front Pedestrian Braking, and the Automatic Emergency Braking system work together to help protect you and your passengers. The HD Surround Vision and Trailer Camera Provisions make navigating tight spaces and towing with confidence a breeze.
Whether you're tackling tough jobs or embarking on unforgettable adventures, this 2026 GMC Sierra 3500HD Denali is the perfect companion. Experience the unparalleled power, premium amenities, and advanced safety features that make this truck a true standout in the heavy-duty segment.
For nearly 50 years, the Regal Automotive Group has proudly served Lakeland and Polk County drivers. With a large inventory of quality vehicles, competitive pricing, and aggressive financing options, our team is committed to delivering a straightforward buying experience and excellent customer service. Price includes: $1000 - Buick & GMC Consumer Cash Program. Exp. 04/30/2026
2026 GMC Sierra 3500 HD Denali
- New
- Diesel
$90,465$91,465 MSRP
Finance Terms
Regal GMC
Call 863-808-0917
We’re here to help
The overview
- Exterior Color
- Onyx Black
- Interior Color
- Jet Black, Forge Perforated Leather seating surfac
- Transmission
- Automatic
- Drivetrain
- 4WD
- Engine
- 6.6L Duramax Turbo-Diesel V8 engine
- VIN
- 1GT4UWEY6TF212880
- Stock Number
- 26T189
Notes from the dealer
Track your progress
Peace of mind
Optional add-on protection
- GAP Protection
- Lifetime Powertrain
- Tires and Wheels
- Paint Protection
A name you can trust
Regal GMC is dedicated to your satisfaction before, during, and after your purchase. We'll go the extra mile to take care of you.
More about usKBB.com Consumer Reviews
4.2out of 5 overall- 5.0
2020 GMC Denali 3500 HD Duramax is a BEAST!
by Merlinsmerc on Friday, January 22, 2021
Pulling a conventional 10,000 lb trailer over mountain passes is a whole new experience. Staying at the speed limit up long steep grades did not change the engine temperature. I feathered the accelerator up the mountain. The new 10 speed transmission is so smooth you cant feel it changing gears. This is my second GMC Denali Duramax, first being a 2016. I debated trading in for over a year, and am so happy I made the trade. Trailers always exceed by far the tongue weight posted on them, and in my case it came in at 1450 lbs. That exceeded my trucks posted maximum. The 2020 dually posts a 2,000 lb tongue weight, so now I can front load the trailer, and that reduces sway. If you can afford it, and have a heavy trailer, buy the truck! - 5.0
Love our truck
by Ron on Friday, December 11, 2020
The truck doesn’t have a sun roof which it was suppose to have - 2.0
In shop for 13 weeks so far!
by Whip on Monday, September 09, 2024
My truck has been in the shop for 13 weeks to this point with no end in sight. The Infotainment panel blew out which controls pretty much everything. Nice truck except if something goes wrong then, good luck! I would recommend looking at Fords and Rams and ask the question, how many vehicles do you have in your shop waiting for parts and for how long. I heard of one at my GMC dealership that has been waiting for 8 months! Only thing I get from GM is "we understand your frustration". Apparently they don't, or I would have my truck back long ago.
Price is plus tax, tag, title, any dealer-installed accessories, dealer fee of $989 and Electronic Registration Filing Fee of $299, which charges represent costs and profits to the dealer for items such as inspecting, cleaning, and adjusting vehicles and preparing documents related to the sale. All advertised pricing is on in-stock units only and is inclusive of all applicable manufacturer offers and may not be combined with other exclusive offers. All payment quotes received assumes that taxes and fees will be paid at the time of sale by the customer in addition to the down payment amount stated or shown. Certain offers presume financing through the Manufacturer Captive Lender, subject to approved credit. Should you purchase the vehicle through the use of other funds, or through other lending sources, certain offers may be excluded. See dealer for complete details.