WORK TRUCK PREFERRED EQUIPMENT GROUP includes standard equipment,REAR CAMERA KIT. Kit includes camera, fixed position bracket & 19 ft cable with attachment clips. Rear camera radio calibration provided from the factory. See Upfitter Integration Bulletin for installation instructions at www.gmupfitter.com,UPFITTER SWITCH KIT, (5) Provides 3-30 amp and 2 - 20 amp configurable circuits to facilitate installation of aftermarket electrical accessories. Kit with all required parts will be shipped loose with the truck for installation by the dealer or upfitter at customer expense. Installation instructions and technical assistance available at www.gmupfitter.com.,SEATS, FRONT 40/20/40 SPLIT-BENCH with upper covered armrest storage and fixed lumbar (STD),GLASS, DEEP-TINTED,REMOTE KEYLESS ENTRY,WINTER GRILLE COVER,DEFOGGER, REAR-WINDOW ELECTRIC,MIRROR, INSIDE REARVIEW AUTO-DIMMING,MIRRORS, OUTSIDE POWER-ADJUSTABLE VERTICAL TRAILERING with heated and auto-dimming upper glass, lower convex mirrors, turn signal indicators, puddle lamps, perimeter lighting, auxiliary lighting, power folding/manual extending (extends 3.31 [84.25mm]), Black Includes (DD8) auto-dimming rearview mirror.),SUMMIT WHITE,REAR AXLE, 3.42 RATIO,JET BLACK, VINYL SEAT TRIM,AUDIO SYSTEM, GMC INFOTAINMENT SYSTEM WITH 7 DIAGONAL COLOR TOUCH-SCREEN, AM/FM STEREO with seek-and-scan and digital clock, includes Bluetooth streaming audio for music and select phones; featuring wired Android Auto and Apple CarPlay capability for compatible phones (STD),TRAILER BRAKE CONTROLLER, INTEGRATED,ENGINE BLOCK HEATER,CRUISE CONTROL, STEERING WHEEL-MOUNTED,EXHAUST BRAKE,POWER OUTLET, INSTRUMENT PANEL, 120-VOLT (400 WATTS),ALTERNATOR, 220 AMPS,ENGINE, DURAMAX 6.6L TURBO-DIESEL V8 B20-Diesel compatible, (445 hp [332 kW] @ 2800 rpm, 910 lb-ft of torque [1220 Nm] @ 1600 rpm) Includes (K05) engine block heater.,TRANSMISSION, ALLISON 10-SPEED AUTOMATIC,SKID PLATES protect the oil pan, front axle and transfer case,CONVENIENCE PACKAGE includes (AQQ) Remote Keyless Entry, (AKO) tinted glass, (C49) rear-window defogger, (DBG) outside power-adjustable vertical trailering with heated upper glass mirrors and (K34) cruise control,TIRES, LT235/80R17E ALL-TERRAIN, BLACKWALL,SIRIUSXM RADIO enjoy an All Access trial subscription with over 150 channels including commercial-free music, plus sports, news and entertainment. Plus listening on the SiriusXM app, online and at home on compatible connected devices is included, so you'll hear the best SiriusXM has to offer, anywhere life takes you. Welcome to the world of SiriusXM.,ONSTAR AND GMC CONNECTED SERVICES CAPABLE,LICENSE PLATE KIT, FRONT,GMC 4G LTE and available built-in Wi-Fi hotspot offers a fast and reliable Internet connection for up to 7 devices; includes data trial for 1 month or 3GB (whichever comes first) Terms and limitations apply. See onstar.com or dealer for details.),SNOW PLOW PREP PACKAGE includes (KW5) 220-amp alternator, includes increased front GAWR on Heavy Duty models, (NZZ) skid plates (transfer case and oil pan), pass through dash grommet hole and roof emergency light provisions. Contact GM Upfitter Integration at www.gmupfitter.com for plow installation details and assistance,TIRE, SPARE LT235/80R17E ALL-TERRAIN
Never Met a Deal We Couldn't Beat!!! Serving Swainsboro since 1926!

New 2021 GMCSierra 3500 HD Chassis Cab WT Truck
- VIN: 1GD49SEY8MF162426
- Stock: 162426
- Exterior Color
- Summit White
- Interior Color
- Black
- Body
- Truck
- Transmission
- Automatic
- Drivetrain
- 4WD
- Engine
- 6.6L Duramax Turbo-Diesel V8 engine
GMC
Sierra 3500 HD Chassis Cab
Detailed Specifications
- Basic
- Corrosion
- Drivetrain
- Maintenance
- Roadside Assistance
- Warranty
- Max seating capacity: 6
- Fuel System: Direct Injection
- Fuel tank capacity: 63
- Horsepower: 445
- Towing capacity: lbs
- 6-speaker audio system:
- Speakers are positioned throughout the cabin for outstanding sound quality and an enjoyable listening experience
- Bluetooth®:
- Pair your compatible mobile phone to your vehicle's infotainment system1
- Place and receive hands-free phone calls
- Store your phone's contact list in the system to place an outgoing call quickly using the touch-screen display or voice command system
- With streaming audio capability, you can listen to files stored on your phone or Bluetooth digital media device
- GMC Infotainment System with color touchscreen:
- Multi-touch display and AM/FM stereo
- 7" diagonal color touchscreen for customizing and managing entertainment and vehicle feature settings1 on Sierra 1SA
- 8" diagonal color touchscreen for customizing and managing entertainment and vehicle feature settings1 on SLE and Elevation
- Bluetooth®2 audio streaming for 2 active devices
- Apple CarPlay™ capability for compatible phones3
- Android Auto™ capability for compatible phones4
- 17" LT235/80R17E all-season highway, blackwall tires:
- May require additional optional equipment
- Lower convex mirrors
- Manual folding/extending
- Extends 3.31-inches
- Roof-mounted lamps near the front of the cab
- Helps minimize the amount of solar rays entering the vehicle cabin
- 12-volt auxiliary front power outlet:
- May require additional optional equipment
- Can be positioned forward or back and up or down
- Can be positioned forward or back and up or down
- Seating for up to 3
- Center fold-down armrest with storage
- Includes child seat top tether anchor
- Can fold one or both sides up
- Adjust the tilt of the mirror to help reduce glare during nighttime driving
- Allows the steering wheel to be manually adjusted up or down
- Provides extra comfort when entering or exiting the vehicle
- Locking security feature
- Programmable
- Allows you to lock and unlock doors easily whether it's from the driver or front passenger seat or from outside using the key fob (when equipped)
- Quickly raises the window or lowers it with the touch of a button
- If an obstruction is detected, the anti-pinch feature will auto-reverse
- Quickly lowers the window with the touch of a button
- If an obstruction is detected, the anti-pinch feature will auto-reverse
- Provides cabin comfort for rear occupants
- Provides good traction and convenient cleanup
- Maintains a selected temperature
- Manual
- 2 located on instrument panel1
- 14,000 lbs. GVWR:
- When properly equipped; includes weight of vehicle, passengers, cargo and equipment
- 170-amp alternator:
- May require additional optional equipment
- Requires a gas engine
- Help reduce wheel lockup and maintain steering control during hard braking on most slippery surfaces
- DuraLife™ brake rotors feature a hardened surface to reduce corrosion and provide quieter braking with less vibration. DuraLife™ rotors are hardened and strengthened during the manufacturing process
- Brake system features a corrosion-fighting process called Ferritic Nitro-Carburizing (FNC) which can double rotor life expectancy and reduce or minimize rust over non-FNC coated rotors
- Overdrive gear for smooth, efficient operation
- Tow/Haul mode and Auto Grade Braking that reduce the amount of conventional braking needed while towing or traveling downhill to help reduce brake wear
- 401 hp [299 kW] @ 5200 rpm
- 464 lb-ft of torque [629 N-m] @ 4000 rpm
- 3.73 rear axle ratio
- Paired with a 6-speed automatic transmission
- Capless fuel fill
- Front 23.5 gallon, (89 liters)
- Rear 40 gallon, (151 liters), mounted between frame side rails and behind rear axle
- May require additional optional equipment
- Alerts the driver when the engine air filter needs replacement
- When the differential senses a significant difference in wheel speed, it locks to turn both rear wheels in unison for added traction
- The Eaton® Locker senses a difference in wheel speed of approximately 100 rpm
- Two front frame-mounted1
- System shift smoothly between drive settings to handle a variety of road conditions
- 2WD High for most on-road and highway situations
- 4WD High for snowy or wet roads when added traction is needed
- 4WD Low for deep sand, mud or snow to provide maximum torque to all 4 wheels
- Neutral
- ONLY used for towing vehicle (Dinghy tow & Dolly tow capability)- allows vehicle to roll freely
- May require additional optional equipment
- Heavy-duty air-to-oil cooler
- Helps provides optimal transmission performance even when operating under a heavy load or towing a trailer
- May require additional optional equipment
- Heavy-duty air-to-oil cooler
- Helps extend engine oil life under heavy loads
- Hydroformed front section
- High-strength steel
- Thick construction helps to trap more dirt before it can enter the air intake
- Designed to help maintain handling and ride quality while towing a trailer or carrying a load
- Daytime Running Lamps, LED signature lighting
- 6 airbags:
- Dual-stage frontal airbags for driver and front outboard passenger1
- Seat-mounted side-impact airbags for driver and front outboard passenger1
- Head-curtain airbags for outboard seating positions1
- Includes front outboard Passenger Sensing System for frontal outboard passenger airbag and illuminates a status light that indicates whether the airbag is on or off1
- Rear Seat Reminder (Requires Crew Cab model.)
- Teen Driver:
- This configurable feature lets you activate customizable vehicle settings associated with a key fob to help encourage better driving behavior1
- It can limit certain vehicle features, and automatically turns on certain safety systems if vehicle is equipped
- An in-vehicle report card gives you information on driving habits and helps you to continue to coach your new driver
- Tire Pressure Monitoring System:
- Monitors the pressure in each tire and alerts you if there is a low-pressure condition in one or more of the tires1
- Includes Tire Fill Alert1
- Brake pad wear indicator
- StabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist
Dealer Notes
KBB.com Consumer Reviews

Overall5Out 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…
Based on 2 consumer ratings for 2020–2021 models. | Privacy
Detailed Pricing
- MSRP
- $58,583
- Purchase Allowance
- -$2,550
- Final Price
- $56,033
- Buick GMC Loyalty Cash
- -$250
- We're here to help: 833-808-8032
New Arrivals
- We're here to help: 833-808-8032