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.
- Duramax 6.6L V8 Turbodiesel engine with 470 hp and 975 lb-ft of torque
- 10-Speed Automatic transmission with 4WD
- Gooseneck/5th Wheel Prep Package for heavy hauling
- Convenience Package with EZ Lift power tailgate, tinted glass, LED cargo lighting, and heated trailering mirrors
- Upfitter Switch Kit with five configurable circuits for aftermarket accessories
- 220-Amp Alternator and Heavy-Duty 80 Amp-Hour Battery
- Skid plates protecting oil pan, front axle, and transfer case
- Spray-on Pickup Bedliner and premium chrome bumpers
- Engine Block Heater and Exhaust Brake
- 120-Volt power outlets on instrument panel and bed
- GMC Infotainment System with wireless phone projection
- Advanced safety features including Automatic Emergency Braking and Forward Collision Alert
- IntelliBeam Automatic High Beam headlights with auto high-beam capability
- Electronic Stability Control and Traction Control
This 2026 Sierra 3500HD Pro arrives in crisp White, ready to take on your toughest jobs with professional capability. The Duramax diesel engine delivers the power and torque you need for serious work, while the rugged construction and protective skid plates ensure durability in demanding conditions. The gooseneck and fifth-wheel preparation makes this truck an ideal choice for owners who need genuine heavy-hauling capacity.
Built with the Pro driver in mind, this truck includes practical features designed for long days on the job. The 120-volt power outlets keep your tools and equipment charged, while LED cargo lighting illuminates the bed in low-light conditions. The upfitter switch kit provides flexibility for integrating specialized electrical systems, allowing you to customize the truck to match your specific work requirements.
Safety and convenience blend seamlessly throughout this vehicle. Advanced driver assistance systems, including automatic emergency braking and lane departure warning, help protect you during your commute or workday. The push-button start, remote keyless entry, and power windows add layers of everyday convenience that make ownership practical and comfortable.
The Sierra 3500HD Pro represents a straightforward choice for professional users who value capability, reliability, and no-nonsense features. This truck is built to work hard and deliver the performance you expect from a leading heavy-duty nameplate.
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. 08/31/2026 $500 - GM First Responder Cash Allowance Program. Exp. 01/04/2027 $500 - GM Rewards Card Sales Sign Up and Spend Offer. Exp. 09/30/2026
2026 GMC Sierra 3500 HD Pro
- New
- Diesel
Finance Terms
Regal Automotive Group
Call 863-225-9790
We’re here to help
The overview
- Exterior Color
- Summit White
- Interior Color
- Jet Black
- Body/Seating
- Truck Crew Cab/6 seats
- Seats
- 6 seats
- Transmission
- Automatic
- Drivetrain
- 4x4
- Engine
- V-8 cyl
- VIN
- 1GT4USEY0TF340363
- Stock Number
- 26T325
The highlights
- Lane departure
- Premium audio system
- Wireless phone connectivity
- Exterior parking camera rear
- Auto high-beam headlights
- Split folding rear seat
- Perimeter/approach lights
- Remote keyless entry
- Fully automatic headlights
- Bedliner
- Heated door mirrors
- Trailer sway control
The full specifications
- 1-touch down
- 1-touch up
- Air conditioning
- Driver door bin
- Front beverage holders
- Illuminated entry
- Overhead console
- Passenger door bin
- Passenger vanity mirror
- Power windows
- Proximity key: push button start only
- Rear door bins
- Remote keyless entry
- Speed control
- Tilt steering wheel
- Front anti-roll bar
- Front tires: 275/70SR18.0E
- Front wheel independent suspension
- Power steering
- Rear tires: 275/70SR18.0E
- Single rear wheels
- Tires: all-terrain
- Wheel size: 18"
- 1st row LCD monitors: 1
- AM/FM radio
- Premium audio system: GMC Infotainment System
- Primary LCD size: 7.0"
- Smart device integration
- Speakers: 6
- Wireless phone connectivity
- Basic warranty: 36 months/36,000miles
- Corrosion perforation warranty: 72 months/100,000miles
- Diesel engine warranty: 60 months/100,000miles
- Maintenance warranty: 12 months/ unlimited distance
- Powertrain warranty: 60 months/60,000miles
- Roadside assistance coverage: 60 months/60,000miles
- Front center armrest: w/storage
- Front seats: bench
- Max seating capacity: 6
- Rear seats: split-bench
- Rear seats Folding position: fold-up cushion
- Seat Upholstery: vinyl
- Split folding rear seat
- Block heater
- Compressor: intercooled turbo
- Cylinder configuration: V-8
- Drive type: four-wheel
- Engine liters: 6.6L
- Engine location: front
- Fuel tank capacity: 36.0gal.
- Horsepower: 470hp @ 2,800RPM
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Number of valves: 32
- Rear locking differential
- Recommended fuel: Diesel
- Standard fuel economy fuel type: diesel
- Torque: 975 lb.-ft. @ 1,600RPM
- Transmission: 10 speed automatic
- Variable valve control
- Ground clearance (min): 283mm (11.1")
- Bedliner
- Bumpers: chrome
- Heated door mirrors
- Hitch Class: IV
- Left rear passenger door: conventional
- Power door mirrors
- Rear cargo: tailgate
- Rear step bumper
- Right rear passenger: conventional
- Skid plates
- Trailer hitch
- Trailer sway control
- Turn signal indicator mirrors
- Compression ratio: 16.00 to 1
- Curb weight: 3,634kg (8,011lbs)
- Engine bore x stroke: 103.0mm x 99.0mm (4.06" x 3.90")
- Engine displacement: 6.6 L
- Engine torque: 975 lb.-ft. @ 1,600RPM
- Exterior body width: 2,079mm (81.8")
- Exterior height: 2,049mm (80.7")
- Exterior length: 6,776mm (266.8")
- Front headroom: 1,093mm (43.0")
- Front hiproom: 1,554mm (61.2")
- Front legroom: 1,131mm (44.5")
- Front shoulder room: 1,677mm (66.0")
- GVWR: 5,557kg (12,250lbs)
- Payload: 1,903kg (4,195lbs)
- Rear headroom: 1,019mm (40.1")
- Rear hiproom: 1,530mm (60.2")
- Rear legroom: 1,102mm (43.4")
- Rear shoulder room: 1,659mm (65.3")
- Towing capacity: 9,072kg (20,000lbs)
- Turning radius: 8.7m (28.5')
- Wheelbase: 4,369mm (172.0")
- Appearance: analog
- Auto high-beam headlights
- Compass
- Delay-off headlights
- Exterior parking camera rear
- Front reading lights
- Fully automatic headlights
- Lane departure: warning
- Low tire pressure warning
- Oil pressure gauge
- Outside temperature display
- Rear reading lights
- Rear window defroster
- Tachometer
- Trip computer
- Variably intermittent wipers
- Voltmeter
- 4 wheel disc brakes
- ABS brakes
- Brake assist
- Dual front impact airbags
- Dual front side impact airbags
- Electronic stability
- Forward collision: mitigation
- Front pedestrian detection: prevention
- Ignition disable
- Occupant sensing airbag
- Overhead airbag
- Panic alarm
- Perimeter/approach lights
- Traction control
Notes from the dealer
Track your progress
Peace of mind
Factory warranty
36 months/36,000miles from the vehicle's original in-service date
Optional add-on protection
- GAP Protection
- Lifetime Powertrain
- Tires and Wheels
- Paint Protection
A name you can trust
Regal Automotive Group is dedicated to your satisfaction before, during, and after your purchase. We'll go the extra mile to take care of you.
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Price is plus tax, tag, title. A dealer fee of $989 and an Electronic Registration Filing Fee of $249 are included in the price, 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.