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2020 GMC Sierra 3500HD

/ miles per gallon(city/highway)* [3]

See What's new in 2020

Model Highlights

The Sierra HD comes in one of several different body styles with long and short bed options. However, despite this complexity there are only two available engines, both V8 units displacing 6.6 liters. The gasoline option is paired to a 6-speed automatic and makes 401 horsepower and 464 lb-ft of torque. The more expensive diesel engine is aided by a turbocharger and makes 445 horsepower and a massive 910 lb-ft of torque. Unlike the gasoline engine, the diesel is mated to a 10-speed automatic to handle all that torque. When properly equipped, a Sierra HD 3500 should be able to tow up to 35,000lbs with a 5th wheel attachment, or 20,000 lbs with a traditional trailer hitch, thanks in large part to the massive torque produced by its diesel V8. Sierra HD models are available with either rear-wheel drive of selectable four-wheel drive.

The Sierra HD comes in either 2500 form or 3500 form with 3500 versions offering a bit more towing capacity and payload because they can be optioned with a "dually" setup, giving the truck an extra pair of wheels on the rear axle. Both trucks can be optioned with a regular cab, a double cab featuring four conventional doors, or a crew cab with even bigger rear seats. Truck beds are either 6'9" or 8' depending on configuration, though the only restriction to bed size is in the regular cab version, which always comes with the longer bed.

In addition to copious options for the basic architecture of the truck, Sierra buyers are also offered plenty of choices when it comes to the tech in their new vehicle. GMC's ProGrade Trailering system features fifteen camera views to help keep an eye on things behind the truck, even counting a class exclusive transparent trailer view among its features. The available heads up display on the Sierra HD is massive, measuring 15-inches across, while the rear-view mirror can be switched between displaying an actual mirror and the view from the rearward facing camera. GM claims their MultiPro tailgate is the world's first six-function tailgate. In practice that means it's easy to load things into and out of the back of the truck, while also providing a ton of utility options for carrying loads with the tailgate dropped. It also has a built-in step to make it easier to climb in and out of the bed of the truck.

New for 2020 are the 4AT versions of the Sierra HD. Concentrating on off-roading capabilities, 4AT models come standard with four-wheel drive along with a more off-road biased suspension setup that includes Rancho Shocks. Other standard features on the 4AT include skid plates, an Eaton locking differential, Michelin all-terrain tires, a heads-up display, GMC's HD Surround Vision2 camera system, hill descent control and an offroad mode.

Most buyers though, will probably opt for the Denali version of the Sierra HD. Available in both 2500 and 3500 forms, Denali versions of the Sierra HD come standard with the bigger crew cab, body colored front and rear bumpers, LED lights in the cargo bed, tinted glass, LED headlights, daytime running, front fog and taillights, powered external mirrors, a MultiPro tailgate, UltraSonic front and rear parking sensors, Lane Departure Warning, Lane Change Alert with Automatic Braking, Rear Cross-Traffic Alert, Following Distance Indicator and Hill Descent Control (HDC). Interior features include 10-way power front seats, 4G LTE Wi-Fi, Bluetooth and Apple CarPlay\Android Auto connectivity, an 8-inch infotainment screen and an 8-inch digital instrument cluster, an 8 speaker Richbass sound system, dual-zone climate control, heated front and rear seats, vented front seats, a heated steering wheel, keyless start and wireless device charging. ;

Check out our 2020 GMC Sierra 3500HD in stock

Vehicle Details

*2020 Sierra 3500HD Denali shown*
PACKAGE MECHANICAL EXTERIOR ENTERTAINMENT INTERIOR SAFETY PROCESSING-OTHER

PACKAGE

Driver Alert Package I includes (UD5) Front and Rear Park Assist
(UKC) Lane Change Alert with Side Blind Zone Alert and (UFG) Rear Cross Traffic Alert (Includes Perimeter Lighting.
Driver Alert Package II includes (UEU) Forward Collision Alert
(UFL) Lane Departure Warning
(UHY) Automatic Emergency Braking
(TQ5) IntelliBeam headlamps and (UE4) Following Distance Indicator
X31 Off-Road Package includes (JHD) Hill Descent Control
(NZZ) skid plates
Off-Road suspension and Twin-tube Rancho shocks (Not available with dual rear wheels.)
Trailering Package includes trailer hitch
7-pin and 4-pin connectors and (CTT) Hitch Guidance
ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (U1D) In-vehicle Trailering App

MECHANICAL

Engine
6.6L V8 with Direct Injection and Variable Valve Timing
gasoline (401 hp [299 kW] @ 5200 rpm
464 lb-ft of torque [629 N-m] @ 4000 rpm)
Transmission
6-speed automatic
heavy-duty
Rear axle
3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)
Pickup bed includes bed assist step
GVWR
11
500 lbs. (5216 kg) with single rear wheels (Included and only available with model TK30943 model and (L8T) 6.6L V8 gas engine. Requires single rear wheels.)
Air filter
high-capacity
Air filtration monitoring
Transfer case
two-speed active electronic Autotrac with push button control
Differential
heavy-duty locking rear
Four wheel drive
Cooling
external engine oil cooler
Cooling
auxiliary external transmission oil cooler
Battery
heavy-duty 720 cold-cranking amps/80 Amp-hr maintenance-free with rundown protection and retained accessory power (Included and only available with (L8T) 6.6L V8 gas engine.)
Alternator
170 amps (Requires (L8T) 6.6L V8 gas engine.)
Trailer brake controller
integrated
LPO
Chrome recovery hooks (dealer installed)
Frame
fully-boxed
hydroformed front section and a fully-boxed stamped rear section
Skid Plates protect the oil pan
front axle and transfer case
Suspension
Off-Road includes twin-tube shocks (Not available with dual rear wheels.)
Steering
Digital Variable Steering Assist This system automatically adjusts steering based on speed
road conditions
and other inputs to reduce driver effort and fatigue
Brakes
4-wheel antilock
4-wheel disc with DURALIFE rotors
Brake lining wear indicator
Capless Fuel Fill (Requires (L8T) 6.6L gas V8 engine.)

EXTERIOR

Wheels
20" (50.8 cm) multi-dimensional Polished aluminum (Requires single rear wheels.)
Tires
LT275/65R20 all-terrain
blackwall (Requires single rear wheels.)
Tire
spare LT275/70R18 all-terrain
blackwall (Included and only available with (QF9) LT275/65R20 all-terrain
blackwall tires on single rear wheel models.)
Single Rear Wheels
Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
Bumper
front
body-color lower
Bumper
rear body-color
with corner steps
CornerStep
rear bumper
BedStep
Black integrated on forward portion of bed on driver and passenger side (Not available with (ZW9) pickup bed delete.)
Assist steps
chromed tubular
6" rectangular cab length (factory installed)
Moldings
beltline
stainless steel
Wheelhouse liners
rear (Not available with dual rear wheel models.)
Bed Liner
Spray-on Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel) (Denali logo replaces GMC logo. Not available with any Ship Thrus EXCEPT (VSH)
(VTV)
(TCH) or (TCE).)
Cargo tie downs (12)
fixed
rated at 500 lbs per corner
Grille
Signature Denali grille with high gloss Black mesh and Chrome inserts
Headlamps
LED reflector (high intensity) with LED turn signals and LED signature Daytime Running Lamps
IntelliBeam
automatic high beam on/off (Included and only available with (PDJ) Driver Alert Package II.)
Fog lamps
LED
Taillamps
LED signature taillight with LED stop and reverse light
Lamps
cargo area
cab mounted integrated with center high mount stop lamp
with switch in bank on left side of steering wheel
LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob
Lamps
Smoked Amber LED roof marker
(LED) (Standard with dual rear wheels. Not available with (YF5) California state emissions requirements on single rear wheels.)
Mirrors
outside power-adjustable vertical trailering with heated and auto-dimming upper glass
(driver and passenger) lower convex mirrors
turn signal indicators
puddle lamps
perimeter lighting
auxiliary lighting
power folding/extending (extends 3.31" [84.25mm])
Mirror caps
chrome
Glass
deep-tinted
Window
power
rear sliding with rear defogger
LPO
Polished exhaust tip (dealer-installed) (Requires (L8T) 6.6L V8 gas engine. Not included with (L5P) Duramax 6.6L Turbo Diesel V8 engine.)
Door handles
chrome
Tailgate
GMC MultiPro Tailgate with six functional load/access features
Tailgate and bed rail protection caps
top
Tailgate
gate function manual with EZ Lift includes power lock and release
includes hitch area light

ENTERTAINMENT

Audio system
Premium GMC Infotainment System with Navigation and 8" diagonal color touch-screen includes multi-touch display
AM/FM stereo
Bluetooth streaming audio for music and most phones; featuring Android Auto and Apple CarPlay capability for compatible phones
advanced voice recognition
in-vehicle apps
personalized profiles for infotainment and vehicle settings. Includes greater memory. (Includes (PZ8) Hitch Guidance with hitch view.)
SiriusXM with 360L Equipped with SiriusXM with 360L. Enjoy a trial subscription of the All Access package for the full 360L experience
with a greater variety of SiriusXM content
a more personalized experience and easier navigation. With the All Access package
you can also enjoy your favorites everywhere you go
with the SiriusXM app
online and at home on compatible connected devices. (IMPORTANT: The SiriusXM radio trial package is not provided on vehicles that are ordered for Fleet Daily Rental ("FDR") use. If you decide to continue service after your trial
the subscription plan you choose will automatically renew thereafter and you will be charged according to your chosen payment method at then-current rates. Fees and taxes apply. See the SiriusXM Customer Agreement at www.siriusxm.com for complete terms and how to cancel. All fees
content
features
and availability are subject to change. GM connected vehicle services vary by vehicle model and require active service plan
working electrical system
cell reception and GPS signal. See onstar.com for details and limitations.)
HD Radio
Bose Sound System
premium 7-speaker system with Richbass woofer
Bluetooth for phone connectivity to vehicle infotainment system

INTERIOR

Seats
front bucket with center console
4G LTE Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
Seat trim
Forge Perforated Leather-appointed seats
Seat adjuster
driver 10-way power including lumbar
Seat adjuster
passenger 10-way power including lumbar
Seat
Up-level Rear with Storage Package
60/40 folding bench for Crew Cab models includes full-length bench seat
seatback storage on left and right side
center fold out armrest with 2 cupholders
full cab width underseat storage
(includes child seat top tether anchor) (Rear seat is leather-appointed.)
Seating
heated driver and front outboard passenger
Seats
ventilated driver and front passenger
Seats
heated second row outboard seats
Driver memory
recalls driver "presets" for power driver seat and outside mirrors
Center Console
floor-mounted with cup holders
cell phone storage
power cord management
hanging file folder capability
Floor covering
color-keyed carpeting
Floor mats
carpeted front (Unique premium carpet. Deleted when LPO floor liners are ordered.)
Floor mats
carpeted rear (Unique premium carpet. Deleted when LPO floor liners are ordered.)
Steering wheel
leather-wrapped
Steering wheel
heated
Steering column
manual Tilt-Wheel and telescoping
Steering wheel audio controls
Driver Information Center
enhanced
8" diagonal multi-color digital display includes analog speedometer and tachometer gauges
In-vehicle Trailering App
System includes checklist
trailer maintenance reminders
trailer security alerts
trailer mileage
tow/haul reminder
trailer electrical diagnostics and Trailer Tire Pressure Monitor System module (Includes trailer tire pressure monitoring alert ONLY when (PTT) trailer tire pressure monitor system is factory ordered and sensors are installed.)
Exterior Temperature Display located in radio display
Compass
located in instrument cluster
Window
power front
drivers express up/down
Window
power front
passenger express up/down
Windows
power rear
express down
Door locks
power
Remote vehicle starter system
Keyless Open and Start
Cruise control
steering wheel-mounted
Universal Home Remote
Theft-deterrent system
unauthorized entry
Steering column
lock control
electrical
Wireless Charging
Power outlet
front auxiliary
12-volt
Power outlet
instrument panel
120-volt (400 watts shared with (KC9) bed mounted power outlet)
USB ports
2 (first row) located on instrument panel
USB Ports (Inside Console with bucket seats)
2 also includes 1 SD card reader and auxiliary jack
USB ports
dual
charge-only (2nd row)
Power outlet
rear auxiliary
12-volt
Power outlet
bed mounted
120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
Air conditioning
dual-zone automatic climate control
Air vents
rear
Defogger
rear-window electric
Mirror
inside rearview auto-dimming
Assist handles
front A-pillar mounted for driver and passenger
rear B-pillar mounted
GMC Connected Access capable (Subject to terms. See onstar.com or dealer for details.)

SAFETY

Automatic Emergency Braking (Included and only available with (PDJ) Driver Alert Package II.)
StabiliTrak
stability control system with Proactive Roll Avoidance and traction control includes electronic trailer sway control and hill start assist
Hill Descent Control (Not available with dual rear wheels.)
Daytime Running Lamps LED signature lighting
Airbags
Dual-stage frontal airbags for driver and front outboard passenger; Seat-mounted side-impact airbags for driver and front outboard passenger; Head-curtain airbags for front and rear outboard seating positions; Includes front outboard Passenger Sensing System for frontal outboard passenger airbag (Always use seat belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner's Manual for more information.)
OnStar and GMC connected services capable (Terms and limitations apply. See onstar.com or dealer for details.)
Front and Rear Park Assist
ultrasonic
HD Rear Vision Camera
Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
Hitch Guidance with Hitch View with image adjustment
Pan/Zoom/Tilt
Rear Cross Traffic Alert
Lane Change Alert with Side Blind Zone Alert
Lane Departure Warning (Included and only available with (PDJ) Driver Alert Package II.)
Following Distance Indicator (Included and only available with (PDJ) Driver Alert Package II.)
Forward Collision Alert (Included and only available with (PDJ) Driver Alert Package II.)
Safety Alert Seat
Rear Seat Reminder
Teen Driver a configurable feature that lets you activate customizable vehicle settings associated with a key fob
to help encourage safe driving behavior. It can limit certain available vehicle features
and it prevents certain safety systems from being turned off. 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 with Tire Fill Alert (does not apply to spare tire)

PROCESSING-OTHER

Trailering Information Label provides max trailer ratings for tongue weight
conventional
gooseneck and 5th wheel trailering

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