CARFAX One-Owner. This 2020 Summit White GMC Sierra 3500HD Base 4WD is well equipped and includes these features and benefits:
Clean CARFAX.
Fairfield's Auto Group, located in beautiful Keene, NH, and serving the New Hampshire, Vermont, Massachusetts, and New England region. Our experienced sales staff is eager to share its knowledge and enthusiasm with you. They'll work with you to find the right vehicle at a price you can afford. Come on in and take a test drive! Please call (603) 352-7700.
Pre-Owned 2020 GMCSierra 3500HD Chassis
- Diesel
- Exterior Color
- Summit White
- Interior Color
- Jet Black
- Odometer
- 61,310 miles
- Transmission
- 10-Speed Automatic
- Drivetrain
- 4x4
- Engine
- 8
- VIN
- 1GD39SEY6LF282137
- Stock Number
- UC9025B
GMC
Sierra 3500HD Chassis
Highlighted Features
- Premium audio system
- Wireless phone connectivity
- Perimeter/approach lights
- Remote keyless entry
- Fully automatic headlights
- Dual rear wheels
- Heated door mirrors
- Trailer sway control
Included Packages & Accessories
- Integrated Trailer Brake Controller
- Front License Plate Kit
- Upfitter Switch Kit
- Tires: LT235/80R17E AT BW
- 3.42 Rear Axle Ratio
- Deep-Tinted Glass
- Electric Rear-Window Defogger
- Power-Adjustable Black Outside Mirrors
- Engine Block Heater
- Winter Grille Cover
- Remote Keyless Entry
- Convenience Package
- Steering Wheel-Mounted Cruise Control
- Power Front Windows w/Driver Express Up/Down
- Power Front Windows w/Passenger Express Down
- Power Door Locks
- Radio: AM/FM w/GMC Infotainment System
- 2-Speaker Audio System Feature
- Skid Plates
- 220 Amp Alternator
- Preferred Equipment Group 1SA
- Manual Door Locks
- Front 40/20/40 Split-Bench Seat
- 4-Way Manual Driver Seat Adjuster
- 4-Way Manual Passenger Seat Adjuster
- Manual Windows
- Solar Absorbing Tinted Glass
- Chrome Surround Grille w/Black Mesh
- High-Visibility Molded in Black Outside Mirrors
- Tires: LT235/80R17E AS Highway BW
- 170 Amp Alternator
- 2-Speed Electronic Shift Transfer Case
- Transmission: Allison 10-Speed Automatic
- Engine: Duramax 6.6L Turbo-Diesel V8
- Dual Heavy-Duty 70 Amp Battery
- Exhaust Brake
- Snow Plow Prep Package
Included Packages & Options
- Engine: Duramax 6.6L Turbo-Diesel V8$9,890
- Engine Block Heater
- 220 Amp Alternator
- Dual Heavy-Duty 70 Amp Battery
- Exhaust Brake
- 3.42 Rear Axle Ratio
- Transmission: Allison 10-Speed Automatic
- Winter Grille Cover
- Convenience Package$1,675
- Remote Keyless Entry
- Deep-Tinted Glass
- Electric Rear-Window Defogger
- Power-Adjustable Black Outside Mirrors
- Steering Wheel-Mounted Cruise Control
- Power Front Windows w/Driver Express Up/Down
- Power Front Windows w/Passenger Express Down
- Power Door Locks
- Snow Plow Prep Package$300
- 220 Amp Alternator
- Skid Plates
Included Options
- Integrated Trailer Brake Controller$275
- Upfitter Switch Kit$150
- Tires: LT235/80R17E AT BW$200
Detailed 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
- Remote keyless entry
- Speed control
- Tilt steering wheel
- Dual rear wheels
- Front anti-roll bar
- Front tires: 235/80SR17.0E
- Front wheel independent suspension
- Power steering
- Rear tires: 235/80SR17.0E
- Tires: all-terrain
- Wheel size: 17"
- 1st row LCD monitors: 1
- AM/FM radio
- Premium audio system: GMC Infotainment System
- Primary LCD size: 7.0"
- Smart device integration: Apple CarPlay/Android Auto
- Speakers: 2
- Wireless phone connectivity: Bluetooth
- Block heater
- Compressor: intercooled turbo
- Cylinder configuration: V-8
- Drive type: four-wheel
- Engine liters: 6.6L
- Engine location: front
- Fuel economy fuel type: gasoline
- Horsepower: 445hp @ 2,800RPM
- Hybrid traction battery type: none
- Mode select transmission
- Number of valves: 32
- Rear locking differential
- Recommended fuel: Diesel
- Torque: 910 lb.-ft. @ 1,600RPM
- Transmission: 10 speed automatic
- Variable valve control
- Ground clearance (min): 207mm (8.2")
- Bumpers: chrome
- Heated door mirrors
- Power door mirrors
- Skid plates
- Trailer sway control
- Turn signal indicator mirrors
- Compression ratio: 16.00 to 1
- Curb weight: 3,495kg (7,705lbs)
- Engine bore x stroke: 103.0mm x 99.0mm (4.06" x 3.90")
- Engine displacement: 6.6 L
- Engine horsepower: 445hp @ 2,800RPM
- Engine torque: 910 lb.-ft. @ 1,600RPM
- Exterior body width: 2,053mm (80.8")
- Exterior height: 2,035mm (80.1")
- Exterior length: 6,092mm (239.8")
- Front headroom: 1,095mm (43.1")
- Front hiproom: 1,549mm (61.0")
- Front legroom: 1,131mm (44.5")
- Front shoulder room: 1,677mm (66.0")
- GVWR: 6,350kg (14,000lbs)
- Payload: 2,844kg (6,271lbs)
- Turning radius: 7.2m (23.5')
- Wheelbase: 3,716mm (146.3")
- Appearance: analog
- Delay-off headlights
- Front reading lights
- Fully automatic headlights
- Low tire pressure warning
- Outside temperature display
- 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
- Ignition disable
- Occupant sensing airbag
- Overhead airbag
- Panic alarm
- Perimeter/approach lights
- Traction control
Standard Features
- Engine Block Heater
- 220 Amp Alternator
- Dual Heavy-Duty 70 Amp Battery
- Exhaust Brake
- 3.42 Rear Axle Ratio
- Transmission: Allison 10-Speed Automatic
- Winter Grille Cover
- Remote Keyless Entry
- Deep-Tinted Glass
- Electric Rear-Window Defogger
- Power-Adjustable Black Outside Mirrors
- Steering Wheel-Mounted Cruise Control
- Power Front Windows w/Driver Express Up/Down
- Power Front Windows w/Passenger Express Down
- Power Door Locks
- 220 Amp Alternator
- Skid Plates
- 4-Way Manual Driver Seat Adjuster
- 4-Way Manual Passenger Seat Adjuster
- 2-Speaker Audio System Feature
- Manual Door Locks
- Front 40/20/40 Split-Bench Seat
- Manual Windows
- Solar Absorbing Tinted Glass
- Chrome Surround Grille w/Black Mesh
- High-Visibility Molded in Black Outside Mirrors
- Tires: LT235/80R17E AS Highway BW
- 170 Amp Alternator
- 2-Speed Electronic Shift 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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