2020 GMC Sierra 3500HD
Denali 4x4 Crew Cab LB SRW

- / -
445 HP


Included Optional Not Available

Green Scores

No Green Scores

NHTSA Crash Test Ratings

No Crash Test Ratings Available


Front Brake Diameter 14.0
Rear Brake Diameter 14.2
4WD HUB Type Pushbutton Hubs
Axle Ratio 3.73
Exterior Dimensions
Length 266.09
Wheelbase 172.0
Height 80.67
Ground Clearance 11.1
Width 81.9
Front Track Width 68.1
Rear Track Width 68.3
Head Room 1st Row 43.0
Head Room 2nd Row/Rear 40.1
Hip Room 1st Row 61.2
Hip Room 2nd Row/Rear 60.2
Shoulder Room 1st Row 66.0
Shoulder Room 2nd Row/Rear 65.3
Leg Room 1st Row 44.5
Leg Room 2nd Row/Rear 43.4
Standard Seating 5
Max Seating 5
Seating Rows 2
Truck Specifications
Bed Length 98.3
Weights and Capacities
Max Payload 4398
Gross Vehicle Weight Rating 11500
Gross Vehicle Weight Range 10001-14000
Curb Weight 7064
Gross Combined Weight Rating 24000
Base Towing Capacity 14500
Tonnage 1
Fuel Tank Capacity 36.0
Max Towing Capacity 21040
Wheels and Tires
Front Wheel Diameter 20.0
Rear Wheel Diameter 20.0
Front Wheel Size 20.0 x 8.5
Rear Wheel Size 20.0 x 8.5
Front Wheel Width 8.5
Rear Wheel Width 8.5
Tire Type All Terrain
Front Tire Description LT275/65R20
Rear Tire Description LT275/65R20
Rear Brake Width 1.34
Front Brake Width 1.57
Exterior Dimensions
Turning Circle 57.0
Width without Mirrors 81.9

Installed Equipment

Air Conditioning
Air filtration
Front air conditioning automatic climate control
Front air conditioning zones dual
Rear vents second row
Airbag deactivation occupant sensing passenger
Front airbags dual
Side airbags front
Side curtain airbags front, rear
Side-curtain airbag rollover sensor
Audio System
Antenna type diversity, mast
Auxiliary audio input Bluetooth, USB, iPod/iPhone, jack, memory card slot
Premium brand Bose
Radio AM/FM, HD radio, touch screen display, voice operated
Radio data system
Satellite radio SiriusXM
Speed sensitive volume control
Subwoofer 1
Total speakers 6
ABS 4-wheel
Braking assist
Electronic brakeforce distribution
Electronic parking brake auto off
Front brake type ventilated disc
Power brakes
Rear brake type ventilated disc
Comfort Features
Armrests rear center with cupholders, rear folding
Center console trim simulated wood
Door trim leather, simulated wood
Floor mat material carpet
Floor material carpet
Floor mats front, rear
Heated steering wheel
Steering wheel trim leather
Convenience Features
Assist handle front, rear
Capless fuel filler system
Center console front console with armrest and storage
Cruise control
Cupholders front, rear
Easy entry power driver seat
Memorized settings 2 driver, driver seat, side mirrors
Multi-function remote panic alarm, proximity entry system
One-touch windows 4
Power outlet(s) 115V cargo area, 115V front, 12V front, 12V rear
Power steering variable/speed-proportional
Power windows lockout button
Push-button start
Reading lights front, rear
Rearview mirror auto-dimming
Remote engine start
Retained accessory power
Steering wheel tilt and telescopic
Steering wheel mounted controls audio, cruise control, multi-function, phone, voice control
Storage door pockets, front seatback, under rear seats
Universal remote transmitter Homelink - garage door opener
Vanity mirrors dual illuminating
Wireless charging station front
4WD selector electronic hi-lo
4WD type part time w/ on demand setting
Locking differential rear
Alternator 170 amps
Auxiliary oil cooler
Battery heavy duty, maintenance-free
Battery rating 720 CCA
Battery saver
Exterior Features
Bumper detail rear step
Door handle color chrome
Exhaust tip color stainless-steel
Fender lip moldings black
Front bumper color body-color
Grille color chrome, chrome surround
Hood scoop
Mirror color chrome
Pickup bed light LED
Pickup bed liner spray-on
Pickup bed type fleetside
Rear bumper color body-color
Running board color chrome
Running boards tube
Skid plate(s) front, rear
Tailgate lift assist, multi-function split-folding, power locking, removable
Tailgate protection cap
Window trim stainless steel
In Car Entertainment
Connected in-car apps app marketplace integration
Infotainment GMC Infotainment System
Infotainment screen size 8 in.
Smartphone integration Android Auto, Apple CarPlay
Digital odometer
Driver information system
Engine hour meter
External temperature display
Fuel economy display MPG, range
Gauge oil pressure, tachometer
Instrument cluster screen size 8 in.
Multi-function display
Trip odometer
Warnings and reminders coolant temperature warning, lamp failure, low battery, low fuel level, low oil pressure, maintenance due, tire fill alert
Daytime running lights LED
Exterior entry lights approach lamps, puddle lamps
Front fog lights LED
Headlights LED, auto delay off, auto high beam dimmer, auto on/off, wiper activated
Roof-mounted lights
Taillights LED
Side mirror adjustments power, power folding, power telescoping, reverse gear tilt
Side mirror type spotter mirror, towing
Side mirrors auto-dimming, heated, integrated turn signals
Automatic emergency braking front
Blind spot safety sensor/alert
Camera system rearview
Check rear seat reminder
Child safety door locks
Child seat anchors LATCH system
Cross traffic alert rear
Lane deviation sensors
Parking sensors front, rear
Pre-collision warning system audible warning, vibrating driver seat, visual warning
Programmable safety key
Rearview monitor in dash
Emergency locking retractors front
Front seatbelts 3-point
Rear seatbelts 3-point
Seatbelt pretensioners front
Seatbelt warning sensor front
Driver seat heated, ventilated
Driver seat power adjustments height, lumbar, reclining, 10
Front headrests adjustable, 2
Front seat type bucket
Passenger seat heated, ventilated
Passenger seat power adjustments height, lumbar, reclining, 10
Rear headrests adjustable, 3
Rear seat heated
Rear seat folding folds up
Rear seat type 60-40 split bench
Upholstery leather-trimmed
Upholstery accents perforated
2-stage unlocking doors
Anti-theft system alarm, engine immobilizer
Power door locks anti-lockout, auto-locking
Stability and Traction
Hill holder control
Off-road driving assist hill descent
Roll stability control
Stability control
Traction control
Trailer stability control
Front shock type twin-tube gas
Front spring type torsion bars
Front stabilizer bar diameter 35 mm
Front suspension classification independent
Front suspension type upper and lower control arms
Rear shock type twin-tube gas
Rear spring type leaf
Rear suspension classification solid live axle
Rear suspension type multi-leaf
Tuned suspension off-road
Driver assistance app roadside assistance
Electronic messaging assistance voice operated, with read function
Navigation system memory card, touch screen display, voice operated
Phone voice operated
Satellite communications OnStar, voice guided directions
Smart device app function maintenance status
Wifi hotspot
Wireless data link Bluetooth
Tires and Rims
Spare tire mount location underbody
Spare tire size full-size
Spare wheel type steel
Tire Pressure Monitoring System
Wheels polished aluminum
Towing and Hauling
Auxiliary transmission fluid cooler
Cargo tie downs
Integrated trailer brake controller
Tow hooks front
Tow/Haul mode
Trailer hitch
Trailer wiring 4-pin, 7-pin
Front wipers variable intermittent
Pickup sliding rear window power horizontal
Power windows safety reverse
Tinted glass
Window defogger rear

Optional Equipment

Audio System
MultiPro Audio System by Kicker
Comfort Features
All-Weather Floor Liners Includes front and rear all-weather floor liners. Limited promotion option.
Convenience Features
Cargo Convenience Package Includes console vault and rear under seat storage. Limited promotion option.
Lockable Console Vault Limited promotion option.
Rear Under-Seat Storage Includes composite storage bin with lockable lid under the rear seat. Limited promotion option.
3.42 Rear Axle Ratio
3.73 Rear Axle Ratio
170 Amp and 220 Amp Dual Alternators
220 Amp Alternator
Auxiliary 730 CCA Battery
California Emissions Override California emissions override (allows a dealer in states that require california emissions - california, connecticut, delaware, maryland, massachusetts, new jersey, new york, oregon, pennsylvania, rhode island or washington to order federal emissions for a vehicle that will be registered in a state that has federal emission requirements). Do not use for vehicles that will be registered in california, connecticut, delaware, maryland, massachusetts, new jersey, new york, oregon, pennsylvania, rhode island or washington. Requires (fe9) federal emissions requirements. Not available in maine or vermont.
California Emissions Requirements
Engine Block Heater
Exhaust Brake
Federal Emissions Override For vehicles ordered by dealers in federal emission states with (yf5) or (ne1) emissions. Not required for vehicles being shipped to california, connecticut, delaware, maine, maryland, massachusetts, new jersey, new york, oregon, pennsylvania, rhode island, vermont or washington.
Federal Emissions Requirements
High Idle Switch
Northeast Emissions Override State-specific (for dealers ordering vehicles in (yf5) or (ne1) emission states - california, connecticut, delaware, maine, maryland, massachusetts, new jersey, new york, oregon, pennsylvania, rhode island, vermont and washington.) allows a california dealer (yf5 emissions) to order (ne1) emissions with (nb9) emissions override code for registration in (ne1) states; or, a connecticut, delaware, maine, maryland, massachusetts, new york, new jersey, oregon, pennsylvania, rhode island, vermont and washington dealer (ne1 emissions) to order (yf5) emissions with (nb9) emissions override code for registration in california.
Northeast Emissions Requirements Includes connecticut, delaware, maine, maryland, massachusetts, new jersey, new york, oregon, pennsylvania, rhode island, vermont and washington state requirements.
Exterior Features
Body Color Wheel Arch Moldings Limited promotion option.
Capped Fuel Fill
Carbon Black Metallic Paint
Cargo Tie-Down Rings Includes a set of 4 cargo tie-down rings. Limited promotion option.
Dark Sky Metallic Paint
Front License Plate Bracket Included on orders with ship-to states that require a front license plate.
Front and Rear Black Molded Splash Guards Limited promotion option.
GMC MultiPro Tailgate Insert w/Mounting Tracks Limited promotion option.
Onyx Black Paint
Pacific Blue Metallic Paint
Pickup Box
Polished Exhaust Tip Limited promotion option.
Quicksilver Metallic Paint
Red Quartz Tintcoat Paint
Rubber Bed Mat Limited promotion option.
Standard Tailgate
White Frost Tricoat Paint
Winter Grille Cover
Fleet Free Maintenance Credit This option code provides a credit in lieu of the free oil changes, tire rotations and inspections for one maintenance service during 1st year of ownership. The invoice will detail the applicable credit. The customer will be responsible for all oil changes, tire rotations, and inspections costs for this vehicle.
In Car Entertainment
Rear Seat Infotainment System with DVD Player Includes dvd player, 8.0-inch dual rear headrest screens with sd, usb ports, hdmi inputs, wireless connectivity, remote control, 2 sets of 2-channel wireless infrared headphones, and available companion parental control app. Limited promotion option.
Marketing Package
Denali Ultimate Package Includes 15 in. Diagonal head-up display, hd surround vision with two trailer view camera provisions, bed view camera, rear camera mirror, and power sunroof.
Denali Ultimate Package Discount
GMC Protection Package Includes front and rear all-weather floor liners and front and rear black molded splash guards. Limited promotion option.
Gooseneck / 5th Wheel Package Includes hitch platform with tray to accept trailer ball, gooseneck or 5th wheel hitch, bed mounted 7-pin trailer harness, and bed view camera.
Snow Plow Prep Package Includes 220-amp alternator, increased front gawr, skid plates (transfer case and oil pan), pass through dash grommet hole, and roof emergency light provisions.
Technology Package Includes 15 in. Diagonal head-up display, hd surround vision with two trailer view camera provisions, bed view camera, and rear camera mirror.
GVWR of 11500 lbs.
Roof and Glass
Power Sunroof
Rear Camera Mirror Includes inside rearview auto-dimming rear camera mirror with full camera display.
Heavy Duty Front Spring Package
Tires and Rims
20 in. Chrome Aluminum Wheels Limited promotion option.
20 in. High Gloss Black Painted Wheels Limited promotion option.
Trailer Tire Pressure Monitor System Includes module and set of 4 sensors.
Wheel Locks Includes a set of 4. Limited promotion option.
Towing and Hauling
Auxiliary Trailer Camera
Bed View Camera Includes camera in the chmsl which shows a view of the cargo bed and two trailer camera provisions.
GVWR of 12250 lbs.
Hitch Package Includes gooseneck ball and chain tiedown kit with case. Limited promotion option.
Trailer Wiring Provisions Includes trailer wiring provisions located at the rear of the pickup box attached to the rear frame cross member.

Available Engines

Duramax 6.6L Biodiesel Turbo V8 445hp 910ft. lbs.
Fuel Type Biodiesel
Fuel Quality 0
Max HP 445 at 2800 rpm
Max Torque 910 at 1600 rpm
Oil Capacity 9.5
Max Payload 4078
Bore 4.06
Stroke 3.9
Displacement 6.6
Block Type V
Cylinders 8
Aspiration Turbo
Fuel Induction CRDI
Cam Type OHV
Valves 32
Valve Timing VVT
Compression 16
6.6L V8 401hp 464ft. lbs.
Fuel Type Gasoline
Fuel Quality 87
Max HP 401 at 5200 rpm
Max Torque 464 at 4000 rpm
Oil Capacity 7.6
Max Payload 4398
Bore 4.06
Stroke 3.86
Displacement 6.6
Block Type V
Cylinders 8
Aspiration Naturally Aspirated
Fuel Induction DI
Cam Type OHV
Valves 16
Valve Timing VVT
Compression 10.8

Available Transmissions

Allison 10-Speed Shiftable Automatic
Detail Shiftable Automatic
Gears 10
6-Speed Shiftable Automatic
Detail Shiftable Automatic
Gears 6

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