New 2026 GMC Sierra 3500 AT4 Crew Cab
Stock #56370
Vehicle Notes
Driving Good. Together. At Harry Browns, that isnt just a slogan - its how we do business every day. When you choose this Coastal Dune 2026 GMC Sierra…
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Chassis Details
Stock Number
56370
Stock Type
New
Year
2026
Make
GMC
Model
Sierra 3500
Class
3
GVWR
12,100
Drivetrain
4WD
Cab Type
Crew
Vehicle Trim
AT4
Interior Color
Jet Black with Kalahari accents, Perforated Front Leather seating surfaces
Seating Capacity
5
Exterior Color Description
Coastal Dune
Engine Cylinder Count
8
Engine
6.6L Duramax Turbo-Diesel V8 engine
Transmission Type
Automatic
Fuel Type
Diesel
Engine Model
L5P
Engine Size (L)
6.6
Horsepower
470
Vehicle Options
- Automatic Emergency Braking (Included and only available with (PDI) Sierra HD Pro Safety.)
- Cooling, external engine oil cooler
- Seat trim, Perforated Front Leather seating surfaces
- Center Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
- Seating, heated driver and front outboard passenger
- Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
- Steering column, manual Tilt-Wheel and telescoping
- Four wheel drive
- Wipers, front rain-sensing
- Driver Information Center, enhanced, 12.3" diagonal reconfigurable multicolor digital display
- USB Ports, 2 (first row) located on console
- Skid Plates protect the oil pan, front axle and transfer case
- Headlamps, Animated LED projectors, LED turn signals and Daytime Running Lamps
- Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
- Bumper, front, body-color lower
- SiriusXM
- Seat Belt Adjustable Guide Loops, front row only
- Recovery hooks, Red
- Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
- Floor covering, color-keyed carpeting
- Tire, spare LT275/70R18 all-terrain, blackwall
- Seats, ventilated driver and front passenger
- Indicator-Seat Belt WARNING, Rear Seat (Requires Crew Cab or Double Cab model.)
- Cargo tie downs (12), fixed, rated at 500 lbs per corner
- Grille, Gloss Black header and grille insert bars with Black chrome accents
- Tailgate and bed rail protection caps, top
- Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
- Theft-deterrent system, unauthorized entry
- Assist handles, front A-pillar mounted for driver and passenger, rear B-pillar mounted
- Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)
- Rear Seat Reminder
- USB ports, (2) charge-only, rear
- Tailgate, GMC MultiPro Tailgate with six functional load/access features. NOTE: Auto release can be disabled if ball hitch is installed. See Owner's manual for details
- Lane Departure Warning (Included and only available with (PDI) Sierra HD Pro Safety.)
- CornerStep, rear bumper
- Bedliner, Spray-on Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel) (Available with Ship Thru code (SQE), (TCE) or (TCH), not available with any other Ship Thru code.)
- USB Ports, 2, Charge/Data ports located inside center console
- Steering wheel, heated
- Exterior Temperature Display located in radio display
- 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])
- Forward Collision Alert (Included and only available with (PDI) Sierra HD Pro Safety.)
- Keyless Open and Start includes remote keyless entry
- Air filtration monitoring
- Air vents, rear
- Defogger, rear-window electric
- Premium Floor Liners with removable carpet insert, front
- Fog lamps, LED
- Daytime Running Lamps LED signature lighting
- Transfer case, two-speed active electronic Autotrac with push button control
- Single 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 (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.)
- StabiliTrak, stability control system with Proactive Roll Avoidance and traction control includes electronic trailer sway control and hill start assist
- OnStar Services capable (See onstar.com for details and limitations. Services vary by model. Service plan required.)
- Safety Alert Seat
- Audio System, 13.4" diagonal Premium GMC Infotainment System with Google built in apps such as navigation and voice assistance, includes color touch-screen, multi-touch display, AM/FM stereo, Bluetooth streaming audio for music and most phones; featuring wireless Android Auto and Apple CarPlay capability for compatible phones. (STD)
- Steering wheel audio controls
- Seats, heated second row outboard seats
- Lamps, cargo area, cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel
- Buckle to Drive prevents vehicle from being shifted out of Park until driver seat belt is fastened; times out after 20 seconds and encourages seat belt use (Included and only available with (PDI) Sierra HD Pro Safety)
- Air filter, heavy-duty
- Window, power front, drivers express up/down
- Trailer Camera Provisions and trailer viewing software
- Wireless Phone Projection for Apple CarPlay and Android Auto
- Trailer Side Blind Zone Alert
- OnStar Basics (OnStar Fleet Basics for Fleet) Drive confidently with core OnStar services including remote commands, built-in voice assistance, real-time traffic and navigation, and Automatic Crash Response to help if you're in need. (Requires (UE1) OnStar. OnStar Basics includes remote commands, Navigation, Voice Assistance, and Automatic Crash Response, for eligible vehicles with compatible software. OnStar Basics is standard for 8 years; OnStar plan, working electrical system, cell reception and GPS signal required. OnStar links to emergency services. Service coverage varies with conditions and location. Service availability, features and functionality vary by device and software version. See onstar.com for details and limitations.)
- Seat adjuster, passenger 10-way power including lumbar
- Compass, located in instrument cluster
- Door locks, power
- LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob
- Bose Sound System, premium 7-speaker system with Richbass woofer
- Tire Pressure Monitoring System auto learn, includes Tire Fill Alert (does not apply to spare tire)
- Windows, power rear, express down
- GMC Premium information Display- 13.4" diagonal Multicolor touch screen
- Bluetooth for phone connectivity to vehicle infotainment system
- Rear Cross Traffic Alert
- Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering
- Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
- Door handles, body-color
- Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
- Trailer brake controller, integrated
- Steering, Digital Variable Steering Assist This system automatically adjusts steering based on speed, road conditions, and other inputs to reduce driver effort and fatigue
- Seats, front bucket with center console (STD)
- Wheelhouse liners, rear
- Hitch Guidance with Hitch View with image adjustment, Pan/Zoom/Tilt
- Glass, deep-tinted
- Adaptive Cruise Control
- Air conditioning, dual-zone automatic climate control
- IntelliBeam, automatic high beam on/off (Included and only available with (PDI) Sierra HD Pro Safety.)
- Bed Step, Black integrated on forward portion of bed on driver and passenger side
- Tires, LT275/65R20 all-terrain, blackwall (STD) (Requires single rear wheels.)
- 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)
- Seat adjuster, driver 10-way power including lumbar
- Steering wheel, wrapped
- Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
- 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
- LED Signature DRL's
- Moldings, beltline, Black
- Brake lining wear indicator
- Bumper, rear body-color with bumper CornerSteps
- Taillamps, Animated LED Signature Tail, Stop, turn and Reverse lamps
- Window, power front, passenger express up/down
- Wheels, 20" (50.8 cm) High Gloss black aluminum wheels, 8 spokes (STD)
- Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
- Front and Rear Park Assist, ultrasonic
- Remote vehicle starter system
- SiriusXM with 360L Trial Subscription. SiriusXM with 360L transforms your customers' ride with our most extensive and personalized radio experience on the road. (IMPORTANT: The SiriusXM trial subscription is not provided on vehicles that are ordered for Fleet Daily Rental ("FDR") use. Trial subscription is subject to the SiriusXM Customer Agreement and privacy policy, visit siriusxm.com which includes full terms and how to cancel. All fees, content, features, and availability are subject to change. Some features require GM connected vehicle services.)
- Driver memory, recalls driver "presets" for power driver seat and outside mirrors
- Auto-locking rear differential
- Premium Floor Liners with removable carpet insert, rear
- Front Pedestrian Braking (Included and only available with (PDI) Sierra HD Pro Safety.)
- Mirror caps, high gloss Black
- Cooling, auxiliary external transmission oil cooler
- 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 when (PTT) trailer tire pressure monitor sensors are installed.)
- Bed View Camera camera in the CHMSL to show a view of the cargo bed, display located in infotainment screen, includes Two Trailer Camera Provisions
- Suspension, Off-Road includes twin-tube shocks
- Hill Descent Control
- HD Surround Vision provides the driver with an overhead view of the scene around the vehicle on a center stack display. Includes front camera washer.
- Wireless Charging
- Option/package discount
- Coastal Dune
- Sunroof, power
- License plate kit, front
- Engine, Duramax 6.6L Turbo-Diesel V8, B20-Diesel compatible
- Gooseneck / 5th Wheel Prep Package
- Engine block heater
- GVWR, 12,100 lbs. (5488 kg) with single rear wheels
- Multicolor 15" Diagonal Head-Up Display
- Universal Home Remote
- AT4 Preferred Package
- Lamps, Smoked Amber roof marker, (LED)
- Rear Camera Mirror
- Winter Grille Cover
- AT4 Preferred Equipment Group
- Capped Fuel Fill
- Exhaust Brake
- Colorado, Connecticut, Delaware, Maine, Maryland, Massachusetts, Minnesota, Nevada, New Jersey, New Mexico, New York, Oregon, Pennsylvania, Rhode Island, Vermont and Washington state requirements
- LPO, Off-Road High clearance step
- Jet Black with Kalahari accents, Perforated Front Leather seating surfaces
- Transmission, 10-speed automatic
- Window, power, rear sliding
- LPO, All-weather floor liners, 1st and 2nd rows
- Battery, heavy-duty 730 cold-cranking amps/70 Amp-hr
- Alternator, 220 amps
- Rear axle, 3.42 ratio
- AT4 Premium Plus Package
- Technology Package
- Snow Plow Prep/Camper Package
- AT4 PREMIUM PLUS PACKAGE DISCOUNT
- CUSTOMER DIALOGUE NETWORK
- View All
Body Details
Body Type
Pickup
Disclaimer:
May not represent actual vehicle. (Options, colors, trim and body style may vary)
The Manufacturer's Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.
The Manufacturer's Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.
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