2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [0]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [1]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [2]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [3]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [4]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [5]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [6]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [7]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [8]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [9]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [10]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [11]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [12]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [13]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [14]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [15]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [16]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [17]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [18]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [19]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [20]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [21]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [22]

2026 GMC Sierra 3500HD Denali 4WD Crew Cab 159″ Denali Turbocharged Diesel V8 6.6L/ [23]

Details

Exterior Color: Sterling Metallic
Interior Color: Jet Black
Body Style: Pickup
Transmission: 10-Speed Automatic

Stock: T266697
VIN: 1GT4UWEY5TF276697
Mileage: 50
Engine: Turbocharged Diesel V8 6.6L/
City MPG:
Highway MPG:

Highlights

4 wheel Drive
4 wheel Drive
Anti Lock Braking System
Anti Lock Braking System
Bed Liner
Bed Liner
Wifi
Wifi
Power Seat(s)
Power Seat(s)
Heated Seats
Heated Seats
Steering Wheel Controls
Steering Wheel Controls
Remote Start
Remote Start
Cruise Control
Cruise Control
Universal Garage Door Opener
Universal Garage Door Opener
Backup Camera / Assist
Backup Camera / Assist
Cross-Traffic Alert
Cross-Traffic Alert
Blind Spot Monitor
Blind Spot Monitor
Multi-Zone A/C
Multi-Zone A/C
Keyless Entry
Keyless Entry
Navigation
Navigation
Premium Sound
Premium Sound
Satellite Radio
Satellite Radio
Rain Sensing Wipers
Rain Sensing Wipers
Bluetooth
Bluetooth
Back-Up Camera
Back-Up Camera
Keyless Start
Keyless Start
Cooled Seat(s)
Cooled Seat(s)
Power Folding Mirrors
Power Folding Mirrors
Lane Departure Warning
Lane Departure Warning
Adaptive Cruise
Adaptive Cruise
Smartphone Integration
Smartphone Integration

Options

Sterling metallic
GOOSENECK / 5TH WHEEL PREP PACKAGE -- Hitch platform to accept Gooseneck or 5th Wheel hitch. Includes hitch platform with tray to accept ball stamped bed holes with removable caps installed and bed mounted 7-pin trailer harness (similar to UY2 harness).
DENALI PREFERRED EQUIPMENT GROUP includes standard equipment
HIGH IDLE SWITCH
DENALI RESERVE PACKAGE includes (CWM) Technology Package and (CF5) power sunroof
REAR AXLE 3.42 RATIO
JET BLACK FORGE PERFORATED LEATHER SEATING SURFACES
LPO BLACK GMC EMBLEMS (dealer-installed)
Front Collision Mitigation
Automatic Highbeams
Running Boards/Side Steps
Locking/Limited Slip Differential
Tow Hooks
ABS
Aluminum Wheels
Tires - Rear All-Terrain
Running Boards/Side Steps
Daytime Running Lights
Automatic Highbeams
Heated Mirrors
Integrated Turn Signal Mirrors
Intermittent Wipers
Rain Sensing Wipers
Rear Defrost
Integrated Tailgate Step
Navigation System
Bluetooth Connection
Smart Device Integration
Requires Subscription
Requires Subscription
Bluetooth Connection
Smart Device Integration
Bucket Seats
Power Driver Seat
Power Passenger Seat
Pass-Through Rear Seat
Heated Front Seat(s)
Cooled Front Seat(s)
Mirror Memory
Floor Mats
Heated Steering Wheel
Steering Wheel Audio Controls
Power Windows
Power Door Locks
Keyless Entry
Keyless Start
Adaptive Cruise Control
Security System
Auxiliary Audio Input
Auxiliary Audio Input
Multi-Zone A/C
Auto-Dimming Rearview Mirror
Front Collision Warning
Stability Control
Daytime Running Lights
Passenger Air Bag
Front Head Air Bag
Passenger Air Bag Sensor
Requires Subscription
Back-Up Camera
Back-Up Camera
Blind Spot Monitor
Front Collision Warning
Driver Restriction Features
Telematics
Requires Subscription
Navigation from Telematics
Requires Subscription

Jet black, forge perforated leather seating surfaces
TRANSMISSION 10-SPEED AUTOMATIC
3 YEARS SIRIUSXM
ENGINE DURAMAX 6.6L TURBO-DIESEL V8 B20-DIESEL COMPATIBLE (470 hp [350.5 kW] @ 2800 rpm 975 lb-ft of torque [1322 Nm] @ 1600 rpm) (Includes (K05) engine block heater.)
STERLING METALLIC
GVWR 12 100 LBS. (5488 KG) WITH SINGLE REAR WHEELS
LPO BLACK BADGING PACKAGE (dealer-installed) includes (SFZ) Black GMC emblems LPO and (RIK) Black Sierra Nameplates LPO.
Lane Departure Warning
Front Collision Warning
Tow Hitch
Keyless Start
Four Wheel Drive
Power Steering
4-Wheel Disc Brakes
Tires - Front All-Terrain
Conventional Spare Tire
Bed Liner
LED Headlights
Fog Lamps
Power Mirror(s)
Power Folding Mirrors
Variable Speed Intermittent Wipers
Privacy Glass
Sliding Rear Window
AM/FM Stereo
MP3 Capability
Auxiliary Audio Input
Satellite Radio
Satellite Radio
Premium Sound System
Bluetooth Connection
WiFi Hotspot
Leather Seats
Driver Adjustable Lumbar
Passenger Adjustable Lumbar
Rear Bench Seat
Heated Front Seat(s)
Heated Rear Seat(s)
Seat Memory
Floor Mats
Adjustable Steering Wheel
Tire Pressure Monitor
Power Windows
Remote Engine Start
Power Door Locks
Cruise Control
Universal Garage Door Opener
MP3 Capability
MP3 Capability
Climate Control
Rear Defrost
Front Collision Mitigation
Traction Control
Daytime Running Lights
Driver Air Bag
Front Side Air Bag
Rear Head Air Bag
Telematics
Rear Parking Aid
Aerial View Display System
Cross-Traffic Alert
Lane Departure Warning
Front Collision Mitigation
Tire Pressure Monitor
Navigation from Telematics
Telematics
WiFi Hotspot

Interior

Adaptive Cruise Control
Air vents, rear
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.
Bose Sound System, premium 7-speaker system with Richbass woofer
Compass, located in instrument cluster
Door locks, power
Driver memory, recalls driver "presets" for power driver seat and outside mirrors
Floor covering, color-keyed carpeting
Floor mats, carpeted rear (Unique premium carpet. Deleted when LPO floor liners are ordered or (BKF) Premium Floor Liners are ordered.)
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.)
Mirror, inside rearview auto-dimming
Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
Seat adjuster, driver 12-way power including lumbar
Seat trim, Forge Perforated Leather seating surfaces
Seating, heated driver and front outboard passenger
Seats, heated second row outboard seats
SiriusXM
Steering column, manual Tilt-Wheel and telescoping
Steering wheel, heated
Theft-deterrent system, unauthorized entry
USB ports, (2) charge-only, rear
USB Ports, 2, Charge/Data ports located inside center console
Window, power front, drivers express up/down
Windows, power rear, express down
Wireless Phone Projection for Apple CarPlay and Android Auto

Air conditioning, dual-zone automatic climate control
Assist handles, front A-pillar mounted for driver and passenger, rear B-pillar mounted
Bluetooth for phone connectivity to vehicle infotainment system
Center Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
Defogger, rear-window electric
Driver Information Center, enhanced, 12.3" diagonal reconfigurable multicolor digital display
Exterior Temperature Display located in radio display
Floor mats, carpeted front (Unique premium carpet. Deleted when LPO floor liners are ordered or (BKF) Premium Floor Liners are ordered.)
GMC Premium information Display- 13.4" diagonal Multicolor touch screen
Keyless Open and Start includes remote keyless entry
Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
Remote vehicle starter system
Seat adjuster, passenger 12-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)
Seats, front bucket with center console
Seats, ventilated driver and front passenger
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.)
Steering wheel audio controls
Steering wheel, wrapped
Universal Home Remote
USB Ports, 2 (first row) located on console
Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
Window, power front, passenger express up/down
Wireless Charging

Mechanical

Air filter, heavy-duty
Alternator, 170 amps (Requires (L8T) 6.6L V8 gas engine.)
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.)
Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
Cooling, auxiliary external transmission oil cooler
Four wheel drive
GVWR, 11,550 lbs. (5239 kg) with single rear wheels (Included and only available with TK30743 model and (L8T) 6.6L V8 gas engine. Requires single rear wheels.)
Push Button Start
Recovery hooks, front, Chrome (Plant installed.)
Steering, Digital Variable Steering Assist This system automatically adjusts steering based on speed, road conditions, and other inputs to reduce driver effort and fatigue
Trailer brake controller, integrated
Transmission, 10-Speed automatic

Air filtration monitoring
Auto-locking rear differential
Brake lining wear indicator
Capless Fuel Fill (Requires (L8T) 6.6L gas V8 engine.)
Cooling, external engine oil cooler
Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
Pickup bed includes bed assist step
Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)
Skid Plates protect the oil pan, front axle and transfer case
Suspension, Off-Road includes twin-tube shocks (Not available with dual rear wheels.)
Transfer case, two-speed active electronic Autotrac with push button control

Safety

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.)
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
Daytime Running Lamps LED signature lighting
Forward Collision Alert (Included and only available with (PDI) Sierra HD Pro Safety.)
Front Pedestrian Braking (Included and only available with (PDI) Sierra HD Pro Safety.)
Hill Descent Control (Not available with dual rear wheels.)
Hitch Guidance with Hitch View with image adjustment, Pan/Zoom/Tilt
Lane Departure Warning (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.)
Rear Cross Traffic Alert
Safety Alert Seat
StabiliTrak, stability control system with Proactive Roll Avoidance and traction control includes electronic trailer sway control and hill start assist
Tire Pressure Monitoring System auto learn, includes Tire Fill Alert (does not apply to spare tire)
Trailer Side Blind Zone Alert

Automatic Emergency Braking (Included and only available with (PDI) Sierra HD Pro Safety.)
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)
Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)
Front and Rear Park Assist, ultrasonic
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.
Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
Indicator-Seat Belt WARNING, Rear Seat (Requires Crew Cab or Double Cab model.)
LED Signature DRL's
OnStar services capable (See onstar.com for details and limitations. Services vary by model. Service plan required.)
Rear Seat Reminder
Seat Belt Adjustable Guide Loops, front row only
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
Trailer Camera Provisions and trailer viewing software

Exterior

Assist steps, chromed tubular, 6" rectangular cab length (factory installed) (Not available with (BRS) power-retractable assist steps with LED perimeter lighting.)
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.)
Bumper, rear body-color with bumper CornerSteps
CornerStep, rear bumper
Fog lamps, LED
Grille, Signature Chrome Denali grille
IntelliBeam, automatic high beam on/off (Included and only available with (PDI) Sierra HD Pro Safety.)
Lamps, Smoked Amber roof marker, (LED) (Standard with dual rear wheels. Not available with (YF5) California state emissions requirements on single rear wheels.)
LPO, Polished exhaust tip (dealer-installed) (Requires (L8T) 6.6L V8 gas engine. Not included with (L5P) Duramax 6.6L Turbo Diesel V8 engine.)
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])
Single Rear Wheels
Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
Taillamps, Animated LED Signature Tail, Stop, turn and Reverse lamps
Tire, spare LT275/70R18 all-terrain, blackwall (Included and only available with (QF9) LT275/65R20 all-terrain, blackwall tires on single rear wheel models.)
Wheelhouse liners, rear (Not available with dual rear wheel models.)
Window, power, rear sliding with rear defogger

Bed Step, Black integrated on forward portion of bed on driver and passenger side
Bumper, front, body-color lower
Cargo tie downs (12), fixed, rated at 500 lbs per corner
Door handles, chrome
Glass, deep-tinted
Headlamps, Animated LED projectors, LED turn signals and Daytime Running Lamps
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
Mirror caps, chrome
Moldings, beltline, stainless steel
Tailgate and bed rail protection caps, top
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
Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
Tires, LT275/65R20 all-terrain, blackwall (Requires single rear wheels.)
Wheels, 20" (50.8 cm) Ultra-bright machined wheels with bright chrome inserts with Black painted pockets (Requires single rear wheels.)
Wipers, front rain-sensing

Package

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 (UET) In-vehicle Trailering App

Disclaimer

All advertised vehicles are subject to actual dealer availability. Certain vehicles listed may not be available, or may have different prices. Prices exclude state tax, license, document preparation fee, smog fee, and finance charges, if applicable. Vehicle option and pricing are subject to change. Prices include all dealer rebates and dealer incentives. Pricing and availability varies by dealership. Please check with your dealer for more information. Prices do not include dealer charges, such as advertising, that can vary by manufacturer or region, or costs for selling, preparing, displaying or financing the vehicle. Images displayed may not be representative of the actual trim level of a vehicle. Colors shown are the most accurate representations available. However, due to the limitations of web and monitor color display, we cannot guarantee that the colors depicted will exactly match the color of the car. Information provided is believed accurate but all specifications, pricing, and availability must be confirmed in writing (directly) with the dealer to be binding. Neither the Dealer nor Catalyst IQ is responsible for any inaccuracies contained herein and by using this application you the customer acknowledge the foregoing and accept such terms.

Net Price DOES NOT include dealer or vendor installed upgrades, accessories, or added after market items. Those products are OPTIONAL and can be purchased for an additional cost. Call For Details!*

Final prices are price shown plus government fees and taxes, any finance charges, any dealer document preparation charge, and any emission testing charge.

Price does not include $699 fee, $100 fuel charge, taxes and additional fees.

Effective September 1st, 2022, vehicles sold in Canada above $100,000 pre-tax retail price may be subject to a luxury tax of either 20% on the amount above $100,000 or a flat 10% on the full value. This tax is in addition to the Provincial Sales Tax (PST) and the Goods and Services Tax (GST). For official information, refer to the Government of Canada website.