New 2026 GMC Sierra 3500 AT4 Crew Cab
Stock #26T685
Vehicle Notes
Summit White 2026 GMC Sierra 3500HD AT4 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Le…
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Chassis Details
Stock Number
26T685
Stock Type
New
Year
2026
Make
GMC
Model
Sierra 3500
Class
3
GVWR
12,250
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
Summit White
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
Brake Type
Hydraulic
Vehicle Options
- Floor covering, color-keyed carpeting
- Bed Step, Black integrated on forward portion of bed on driver and passenger side
- Steering, Digital Variable Steering Assist This system automatically adjusts steering based on speed, road conditions, and other inputs to reduce driver effort and fatigue
- 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])
- Air vents, rear
- Lane Departure Warning (Included and only available with (PDI) Sierra HD Pro Safety.)
- Glass, deep-tinted
- Steering wheel, heated
- Door handles, body-color
- Forward Collision Alert (Included and only available with (PDI) Sierra HD Pro Safety.)
- Adaptive Cruise Control
- Wipers, front rain-sensing
- 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.)
- Daytime Running Lamps LED signature lighting
- SiriusXM
- Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
- ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (UET) In-vehicle Trailering App
- Tire, spare LT275/70R18 all-terrain, blackwall
- Remote vehicle starter system
- Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
- Seat Belt Adjustable Guide Loops, front row only
- LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob
- Seats, ventilated driver and front passenger
- Moldings, beltline, Black
- 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
- Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
- LED Signature DRL's
- X31 Off-Road Package includes (JHD) Hill Descent Control, (NZZ) skid plates, Off-Road suspension and Twin-tube Rancho shocks
- 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.
- 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)
- Window, power front, passenger express up/down
- Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
- Single Rear Wheels
- 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.)
- Air filter, heavy-duty
- 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
- Window, power front, drivers express up/down
- Cooling, external engine oil cooler
- Theft-deterrent system, unauthorized entry
- Rear Cross Traffic Alert
- Rear Seat Reminder
- 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.)
- Suspension, Off-Road includes twin-tube shocks
- Indicator-Seat Belt WARNING, Rear Seat (Requires Crew Cab or Double Cab model.)
- Brake lining wear indicator
- Exterior Temperature Display located in radio display
- Trailer Side Blind Zone Alert
- USB Ports, 2, Charge/Data ports located inside center console
- Mirror caps, high gloss Black
- Keyless Open and Start includes remote keyless entry
- Door locks, power
- Seat adjuster, driver 10-way power including lumbar
- Premium Floor Liners with removable carpet insert, front
- Bumper, front, body-color lower
- Lamps, cargo area, cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel
- 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.)
- Driver Information Center, enhanced, 12.3" diagonal reconfigurable multicolor digital display
- Seats, front bucket with center console (STD)
- Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)
- USB ports, (2) charge-only, rear
- Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
- IntelliBeam, automatic high beam on/off (Included and only available with (PDI) Sierra HD Pro Safety.)
- Hitch Guidance with Hitch View with image adjustment, Pan/Zoom/Tilt
- Push Button Start
- Auto-locking rear differential
- 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)
- Steering wheel audio controls
- Air conditioning, dual-zone automatic climate control
- Recovery hooks, Red
- Wireless Charging
- Bluetooth for phone connectivity to vehicle infotainment system
- Cargo tie downs (12), fixed, rated at 500 lbs per corner
- Bose Sound System, premium 7-speaker system with Richbass woofer
- Driver memory, recalls driver "presets" for power driver seat and outside mirrors
- Compass, located in instrument cluster
- GMC Premium information Display- 13.4" diagonal Multicolor touch screen
- Wireless Phone Projection for Apple CarPlay and Android Auto
- Seat adjuster, passenger 10-way power including lumbar
- Taillamps, Animated LED Signature Tail, Stop, turn and Reverse lamps
- Premium Floor Liners with removable carpet insert, rear
- USB Ports, 2 (first row) located on console
- Wheelhouse liners, rear
- Cooling, auxiliary external transmission oil cooler
- Air filtration monitoring
- Headlamps, Animated LED projectors, LED turn signals and Daytime Running Lamps
- 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)
- Front Pedestrian Braking (Included and only available with (PDI) Sierra HD Pro Safety.)
- Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
- Tire Pressure Monitoring System auto learn, includes Tire Fill Alert (does not apply to spare tire)
- Tires, LT275/65R20 all-terrain, blackwall (STD) (Requires single rear wheels.)
- Windows, power rear, express down
- Seat trim, Perforated Front Leather seating surfaces
- Trailer Camera Provisions and trailer viewing software
- Pickup bed includes bed assist step
- Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
- Steering wheel, wrapped
- Front and Rear Park Assist, ultrasonic
- Tailgate and bed rail protection caps, top
- Steering column, manual Tilt-Wheel and telescoping
- Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
- Defogger, rear-window electric
- Skid Plates protect the oil pan, front axle and transfer case
- CornerStep, rear bumper
- Wheels, 20" (50.8 cm) High Gloss black aluminum wheels, 8 spokes (STD)
- Transfer case, two-speed active electronic Autotrac with push button control
- OnStar Services capable (See onstar.com for details and limitations. Services vary by model. Service plan required.)
- Grille, Gloss Black header and grille insert bars with Black chrome accents
- Trailering Package includes trailer hitch, 7-pin and 4-pin connectors and (CTT) Hitch Guidance
- Center Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
- Fog lamps, LED
- Safety Alert Seat
- Automatic Emergency Braking (Included and only available with (PDI) Sierra HD Pro Safety.)
- 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.)
- Assist handles, front A-pillar mounted for driver and passenger, rear B-pillar mounted
- Four wheel drive
- StabiliTrak, stability control system with Proactive Roll Avoidance and traction control includes electronic trailer sway control and hill start assist
- Bumper, rear body-color with bumper CornerSteps
- Seats, heated second row outboard seats
- Hill Descent Control
- Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering
- Seating, heated driver and front outboard passenger
- 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
- Trailer brake controller, integrated
- Sierra HD Pro Safety includes (UEU) Forward Collision Alert, (UE4) Following Distance Indicator, (UKJ) Front Pedestrian Braking, (TQ5) IntelliBeam, (UFL) Lane Departure Warning, (T8Z) Buckle to Drive and (UHY) Automatic Emergency Braking
- Engine, Duramax 6.6L Turbo-Diesel V8, B20-Diesel compatible
- Gooseneck / 5th Wheel Prep Package
- Engine block heater
- Multicolor 15" Diagonal Head-Up Display
- GVWR, 12,250 lbs. (5557 kg) with single rear wheels
- Universal Home Remote
- AT4 Preferred Package
- Rear Camera Mirror
- Winter Grille Cover
- AT4 Preferred Equipment Group
- Capped Fuel Fill
- Option/package discount
- Exhaust Brake
- Sunroof, power
- Summit White
- Emissions, California state requirements
- License plate kit, front
- Jet Black with Kalahari accents, Perforated Front Leather seating surfaces
- Transmission, 10-speed automatic
- Window, power, rear sliding
- Battery, heavy-duty 730 cold-cranking amps/70 Amp-hr
- Assist steps, power-retractable, Black
- Alternator, 220 amps
- Rear axle, 3.42 ratio
- AT4 Premium Plus Package
- Technology Package
- AT4 PREMIUM PLUS PACKAGE DISCOUNT
- CUSTOMER DIALOGUE NETWORK
- View All
Body Details
Body Type
Pickup
Pricing Details
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