2021 GMC Sierra 3500HD 4WD Crew Cab 159" Denali

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.)

ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (U1D) In-vehicle Trailering App

Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)

Air filter, heavy-duty

Air filtration monitoring

Transfer case, two-speed active electronic Autotrac with push button control

Auto-locking rear differential

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.)

Single Rear Wheels

Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door

Bumper, front, body-colour lower

Bumper, rear body-colour, with bumper CornerSteps

CornerStep, rear bumper

Bed Step, Black integrated on forward portion of bed on driver and passenger side

Mouldings, 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.)

Cargo tie downs (12), fixed, rated at 500 lbs (226.8 kg) per corner

Grille, Signature Denali grille with high gloss Black mesh and Chrome inserts

IntelliBeam, automatic high beam on/off

Fog lamps, LED

Taillamps, LED signature taillight with LED stop and reverse light

Lamps, cargo area, cab mounted integrated with centre 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 centre switch bank or key fob

Lamps, Smoked Amber LED roof marker, (LED) (Standard with dual 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

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

HD Radio

Bose Sound System, premium 7-speaker system with Richbass woofer

4G LTE Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.ca or dealer for details.)

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, centre fold out armrest with 2 cupholders, full cab width underseat storage, (includes child seat top tether anchor) (Rear seat features leather seating surfaces.)

Seats, heated second row outboard seats

Driver memory, recalls driver "presets" for power driver seat and outside mirrors

Centre Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability

Floor covering, colour-keyed carpeting

Steering wheel, leather-wrapped

Steering wheel, heated

Steering column, manual Tilt-Wheel and telescoping

Steering wheel audio controls

Driver Information Centre, enhanced, 8" diagonal multi-colour digital display includes analogue 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

Remote vehicle starter system

Cruise control, steering wheel-mounted

Universal Home Remote

Theft-deterrent system, unauthorized entry

Steering column, lock control, electrical

Wireless Charging

Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)

USB ports, dual, charge-only (2nd row)

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

Assist handles, front A-pillar mounted for driver and passenger, rear B-pillar mounted

GMC Connected Access capable (Subject to terms. See onstar.ca or dealer for details.)

Automatic Emergency Braking

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.)

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

Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching

Following Distance Indicator

Forward Collision Alert

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 behaviour. 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