GMC Sierra 3500HD SLT Duramax 6.6L V8 Turbodiesel 10-Speed Automatic
10-Speed Automatic, 4WD, Jet Black Leather, 10-Way Power Front Seats, 120-Volt Instrument Panel Power Outlet, 120-Volt Power Outlets, 2 Charge-Only Rear USB Ports, 2 Charge/Data USB Ports, 2 Charge/Data USB Ports Inside Center Console, 2-Speed Active Transfer Case, 220 Amp Alternator, 3.42 Rear Axle Ratio, 6-Speaker Audio System Feature, 6" Rectangular Chromed Tubular Assist Steps, Adaptive Cruise Control, All-Weather Floor Liners (LPO), Bed View Camera w/2 Trailer Camera Provisions, Bose Premium 7-Speaker Sound System, Buckle to Drive, Deep-Tinted Glass, Dual Front Impact Airbags, Dual Front Side Impact Airbags, Electric Rear-Window Defogger, Exhaust Brake, Exterior Parking Camera Rear, Following Distance Indicator, Forward Collision Alert, Front Dual Zone A/C, Front Pedestrian Braking, Front Rain-Sensing Wipers, Fully Automatic Headlights, GMC MultiPro Tailgate, GMC Premium 13.4" Diagonal Information Display, GMC Protection Package (LPO), Gooseneck/5th Wheel Prep Package, HD Surround Vision, Heated 2nd Row Outboard Seats, Heated and Ventilated Driver & Front Passenger Seats, Heated Power Door Mirrors, Heated Steering Wheel, Hill Descent Control, Keyless Open & Start, Lane Departure Warning System, LED Cargo Area Lighting, LED Smoked Amber Roof Marker Lamps, Manual Tilt-Wheel/Telescoping Steering Column, Off-Road Suspension, Power Driver Seat, Power Sliding Rear Window w/Defogger, Power Sunroof, Power Windows, Preferred Equipment Group 4SA, Push Button Start, Rear Cross Traffic Alert, Remote Keyless Entry, Remote Vehicle Starter System, Safety Alert Seat, Sierra HD Pro Safety Plus Package, SiriusXM w/360L Trial Subscription, SLT Convenience Package, SLT Preferred Package, SLT Premium Package, Spray-On Pickup Bedliner w/GMC Logo, Steering Wheel Audio Controls, Trailer Camera Provisions, Trailer Side Blind Zone Alert, Ultrasonic Front & Rear Park Assist, Unauthorized Entry Theft-Deterrent System, Universal Home Remote, Wheels: 20" Bright Face w/Dark Painted Pockets, Wireless Charging Pad, Wireless Phone Projection, X31 Off-Road & Protection Package, X31 Off-Road Package. 4D Crew Cab
Clean CARFAX. CARFAX One-Owner.
* GMC's Original Manufacturer's Warranties are Still in Force on This Vehicle * Additional Dealer Warranty Included * WE DELIVER * WE FINANCE * TRADES WELCOMED - WE'LL BUY YOUR CAR EVEN IF YOU DON'T BUY OURS!! * Our internet team strives to keep all information accurate, however you may want to contact us to verify the information provided. Herlong Ford Inc. Shall not be responsible for errors, omissions, or availability. ALL DESCRIPTIONS AND OPTIONS SELECTED SUBJECT TO CHANGE, PLEASE CALL TO VERIFY. *
Used 2025 GMCSierra 3500HD SLT Truck Duramax V8 Turbodiesel
- Diesel
- Exterior Color
- Volcanic Red Tintcoat
- Interior Color
- Jet Black
- Odometer
- 784 miles
- Transmission
- 10-Speed Automatic
- Drivetrain
- 4WD
- Engine
- Duramax 6.6L V8 Turbodiesel
- VIN
- 1GT4UUEY8SF315740
- Stock Number
- 5663U
GMC
Sierra 3500HD
Included Packages & Accessories
- GMC Protection Package (LPO)
- Suspension Package
- X31 Off-Road & Protection Package
- 6 Speakers
- AM/FM radio: SiriusXM with 360L
- Radio: AM/FM w/Premium GMC Infotainment System
- SiriusXM w/360L Trial Subscription
- Air Conditioning
- Automatic temperature control
- Front Dual Zone A/C
- Rear Window Defroster
- 120-Volt Power Outlets
- Driver Memory
- Power Driver Memory Seat
- Power Driver Seat
- Power Steering
- Power Windows
- Remote Keyless Entry
- Steering wheel mounted audio controls
- Speed-Sensing Steering
- Traction Control
- 4-Wheel Disc Brakes
- ABS brakes
- Dual Front Impact Airbags
- Dual Front Side Impact Airbags
- Front anti-roll bar
- Front wheel independent suspension
- Keyless Open & Start
- Low tire pressure warning
- Occupant sensing airbag
- Overhead airbag
- Power Sunroof
- Pickup Bed
- Brake assist
- Electronic Stability Control
- Lane Departure Warning System
- Exterior Parking Camera Rear
- Auto High-Beam Headlights
- Delay-off headlights
- Front Fog Lights
- Fully Automatic Headlights
- Panic alarm
- Security system
- Cruise Control
- 220 Amp Alternator
- Engine Block Heater
- Exhaust Brake
- Heavy-Duty 80 Amp-Hr Battery
- Auto-Dimming Door Mirrors
- Bumpers: chrome
- Cornerstep Rear Bumper
- Front License Plate Kit
- GMC MultiPro Tailgate
- Heated Power Door Mirrors
- IntelliBeam Automatic High Beam On/Off
- Power Door Mirrors
- Spray-On Pickup Bedliner w/GMC Logo
- Turn Signal Indicator Mirrors
- Winter Grille Cover
- All-Weather Floor Liners (LPO)
- Auto-Dimming Rear-View Mirror
- Automatic Emergency Braking
- Bed View Camera w/2 Trailer Camera Provisions
- Buckle to Drive
- Compass
- Driver door bin
- Driver vanity mirror
- Following Distance Indicator
- Forward Collision Alert
- Front 40/20/40 Split-Bench Seats w/Lockable Storage
- Front Pedestrian Braking
- Front reading lights
- GMC Premium 13.4" Diagonal Information Display
- Heated Steering Wheel
- Illuminated entry
- Outside temperature display
- Overhead console
- Passenger vanity mirror
- Rear reading lights
- Rear Seat Center Armrest
- Tachometer
- Telescoping steering wheel
- Tilt / Telescoping Steering Wheel
- Trip computer
- Ultrasonic Front & Rear Park Assist
- Voltmeter
- Wireless Charging Pad
- 10-Way Power Driver Seat Adjuster w/Lumbar
- 10-Way Power Front Seats
- Heated and Ventilated Driver & Front Passenger Seats
- Perf Leather-Appointed Front Outboard Seat Trim
- Seats: Power Front Bucket Seats
- Seats: Power Heated Front Seats
- Seats: Split Folding Rear Seat
- Front Center Armrest w/Storage
- Passenger door bin
- Hitch Guidance w/Hitch View
- 18 Inch Machined High-Gloss Black Painted Aluminum Wheels
- 18" Machined Aluminum Wheels
- Wheels: 20" Bright Face w/Dark Painted Pockets
- Power Sliding Rear Window w/Defogger
- Rain Sensing Wipers
- Variable Interval Wipers
- 3.42 Rear Axle Ratio
- Gooseneck/5th Wheel Prep Package
- Preferred Equipment Group 4SA
- Sierra HD Pro Safety Plus Package
- SLT Convenience Package
- SLT Preferred Package
- SLT Premium Package
- X31 Off-Road Package
- 6-Speaker Audio System Feature
- Bose Premium 7-Speaker Sound System
- Steering Wheel Audio Controls
- Electric Rear-Window Defogger
- 120-Volt Instrument Panel Power Outlet
- Push Button Start
- Remote Vehicle Starter System
- Universal Home Remote
- Manual Tilt-Wheel/Telescoping Steering Column
- Off-Road Suspension
- Hill Descent Control
- Unauthorized Entry Theft-Deterrent System
- Adaptive Cruise Control
- 2-Speed Active Transfer Case
- 6" Rectangular Chromed Tubular Assist Steps
- LED Cargo Area Lighting
- LED Smoked Amber Roof Marker Lamps
- Rear Wheelhouse Liners
- 2 Charge-Only Rear USB Ports
- 2 Charge/Data USB Ports
- 2 Charge/Data USB Ports Inside Center Console
- HD Surround Vision
- Rear Cross Traffic Alert
- Safety Alert Seat
- Trailer Camera Provisions
- Trailer Side Blind Zone Alert
- Wireless Phone Projection
- Heated 2nd Row Outboard Seats
- Deep-Tinted Glass
- Front Rain-Sensing Wipers
Included Packages & Options
- SLT Premium Package$4,445
- SLT Convenience Package
- SLT Preferred Package
- Sierra HD Pro Safety Plus Package
- 6" Rectangular Chromed Tubular Assist Steps
- SLT Convenience Package$1,560
- 2 Charge/Data USB Ports Inside Center Console
- Bose Premium 7-Speaker Sound System
- LED Smoked Amber Roof Marker Lamps
- Sierra HD Pro Safety Plus Package$1,245
- Trailer Side Blind Zone Alert
- Rear Cross Traffic Alert
- HD Surround Vision
- Trailer Camera Provisions
- Safety Alert Seat
- Gooseneck/5th Wheel Prep Package$1,090
- SLT Preferred Package$1,050
- Heated 2nd Row Outboard Seats
- Universal Home Remote
- Adaptive Cruise Control
- X31 Off-Road Package$325
- Hill Descent Control
- Off-Road Suspension
Included Options
- Power Sunroof$995
- 220 Amp Alternator$150
- Engine Block Heater$100
Detailed Specifications
- 1st and 2nd row curtain head airbags
- 4-wheel ABS Brakes
- ABS and Driveline Traction Control
- Anti-theft alarm system
- Audio controls on steering wheel
- Automatic front air conditioning
- Auxilliary engine cooler
- Auxilliary transmission cooler
- Braking Assist
- Climate Controlled : Driver and passenger heated
- Compass
- Cruise control
- Cruise controls on steering wheel
- Daytime running lights
- Driver seat memory
- Dual front air conditioning zones
- Dual illuminated vanity mirrors
- Electrochromatic auto-dimming mirrors
- Electrochromatic rearview mirror
- Exterior Entry Lights : Remote activated w/puddle lights
- External temperature display
- Fold-up cushion rear seats
- Front Ventilated disc brakes
- Front and rear reading lights
- Front fog/driving lights
- Front split-bench
- Fuel Capacity: 36.0 gal.
- Fuel Type: Regular unleaded
- Heated driver mirror
- Heated passenger mirror
- Heated steering wheel
- Leather seat upholstery
- Leatherette steering wheel trim
- Machined aluminum rims w/ painted accents
- Memorized Settings for 2 drivers
- Memorized Settings including door mirror(s)
- Metal-look dash trim
- Passenger Airbag
- Power extendable trailer style exterior mirrors
- Power remote driver mirror adjustment
- Power remote passenger mirror adjustment
- Power retractable mirrors
- Power windows
- Premium GMC Infotainment System
- Privacy glass: Deep
- Rear seats center armrest
- Remote Engine Start : Keyfob remote start
- Remote power door locks
- Remote window operation
- Side airbag
- Simulated wood/metal-look door trim
- SiriusXM with 360L AM/FM/Satellite Radio
- SiriusXM with 360L Satellite Radio
- Speed-proportional power steering
- Split rear bench
- Stability controll with anti-roll
- Suspension class: Regular
- Tachometer
- Tilt and telescopic steering wheel
- Tire Pressure Monitoring System: Tire specific
- Total Number of Speakers: 6
- Trailer hitch
- Trip computer
- Turn signal in mirrors
- Urethane shift knob trim
- Vehicle Emissions: Federal
- Video Monitor Location: Front
- Wheel Diameter: 18
- Wheel Width: 8
- Wireless phone connectivity
Standard Features
- SLT Convenience Package
- SLT Preferred Package
- Sierra HD Pro Safety Plus Package
- 6" Rectangular Chromed Tubular Assist Steps
- 2 Charge/Data USB Ports Inside Center Console
- Bose Premium 7-Speaker Sound System
- LED Smoked Amber Roof Marker Lamps
- Trailer Side Blind Zone Alert
- Rear Cross Traffic Alert
- HD Surround Vision
- Trailer Camera Provisions
- Safety Alert Seat
- Heated 2nd Row Outboard Seats
- Universal Home Remote
- Adaptive Cruise Control
- Hill Descent Control
- Off-Road Suspension
- Wireless Phone Projection
- 6-Speaker Audio System Feature
- Electric Rear-Window Defogger
- Push Button Start
- Remote Vehicle Starter System
- 120-Volt Instrument Panel Power Outlet
- 2 Charge/Data USB Ports
- 2 Charge-Only Rear USB Ports
- Deep-Tinted Glass
- Steering Wheel Audio Controls
- Manual Tilt-Wheel/Telescoping Steering Column
- LED Cargo Area Lighting
- Unauthorized Entry Theft-Deterrent System
- Rear Wheelhouse Liners
- Front Rain-Sensing Wipers
- 2-Speed Active Transfer Case
Dealer Notes
KBB.com Consumer Reviews

Overall4.2Out of 5
- 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.…
Based on 6 consumer ratings for 2020–2026 models. | Privacy
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