2026 GMC Sierra 3500HD AT4



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  • MSRP: Call For Price & Availability
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Vehicle Information

VIN: 1GT4UVEY4TF370662
Stock #: 26P683
  • Body Style Crew Cab Pickup
  • Exterior Color Summit White
  • Interior Color Jet Black With Kalahari Accents
  • Engine Turbocharged Diesel V8 6.6L/
  • Transmission Automatic
  • Fuel Type Diesel Fuel

Highlighted Features

Feature availability subject to final vehicle configuration. Please reference window sticker for more info.

Dealer Comments

WINTER GRILLE COVER, WINDOW, POWER, REAR SLIDING with rear defogger, WHEELS, 20 (50.8 CM) HIGH GLOSS BLACK ALUMINUM WHEELS, 8 SPOKES (STD), UNIVERSAL HOME REMOTE, TRANSMISSION, 10-SPEED AUTOMATIC, TIRES, LT275/65R20 ALL-TERRAIN, BLACKWALL (STD), TECHNOLOGY PACKAGE includes (DRZ) Rear Camera Mirror and (UV6) Multicolor 15 Diagonal Head-Up Display, SUNROOF, POWER, SUMMIT WHITE, SEATS, FRONT BUCKET WITH CENTER CONSOLE (STD). This GMC Sierra 3500HD has a dependable Turbocharged Diesel V8 6.6L/ engine powering this Automatic transmission.*This GMC Sierra 3500HD AT4 Has Everything You Want *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)., AT4 PREFERRED PACKAGE includes (UG1) Universal Home Remote, (A48) rear sliding power window and (U01) Roof Marker Lamps , REAR AXLE, 3.42 RATIO, MULTICOLOR 15 DIAGONAL HEAD-UP DISPLAY, LPO, SPORT STEP, BLACK (dealer-installed), LICENSE PLATE KIT, FRONT, LAMPS, SMOKED AMBER ROOF MARKER, (LED), JET BLACK WITH KALAHARI ACCENTS, PERFORATED FRONT LEATHER SEATING SURFACES, GVWR, 12,100 LBS. (5488 KG) WITH SINGLE REAR WHEELS, EXHAUST BRAKE, 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.), ENGINE BLOCK HEATER, DELETED MOBILE SERVICE PLUS., 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), AT4 PREFERRED EQUIPMENT GROUP includes standard equipment, ASSIST HANDLE, SIDE (bed mounted; fold out grab handle for extra support), ALTERNATOR, 220 AMPS, Wireless Phone Projection for Apple CarPlay and Android Auto, Wireless Charging, Wipers, front rain-sensing.* Stop By Today *Stop by Thornhill GM Superstore located at Rt 119 and Trace Fork Rd, Chapmanville, WV 25508 for a quick visit and a great vehicle!

All Features

  • REAR CAMERA MIRROR inside rearview auto-dimming with full camera display
  • LPO SPORT STEP BLACK (dealer-installed)
  • 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).
  • LICENSE PLATE KIT FRONT
  • TIRES LT275/65R20 ALL-TERRAIN BLACKWALL (STD)
  • 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)
  • TECHNOLOGY PACKAGE includes (DRZ) Rear Camera Mirror and (UV6) Multicolor 15 Diagonal Head-Up Display
  • TRANSMISSION 10-SPEED AUTOMATIC
  • 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.)
  • DELETED MOBILE SERVICE PLUS.
  • WINTER GRILLE COVER
  • WINDOW POWER REAR SLIDING with rear defogger
  • UNIVERSAL HOME REMOTE
  • ENGINE BLOCK HEATER
  • ASSIST HANDLE SIDE (bed mounted; fold out grab handle for extra support)
  • SUNROOF POWER
  • SUMMIT WHITE
  • AT4 PREFERRED EQUIPMENT GROUP includes standard equipment
  • LAMPS SMOKED AMBER ROOF MARKER (LED)
  • REAR AXLE 3.42 RATIO
  • GVWR 12 100 LBS. (5488 KG) WITH SINGLE REAR WHEELS
  • EXHAUST BRAKE
  • WHEELS 20 (50.8 CM) HIGH GLOSS BLACK ALUMINUM WHEELS 8 SPOKES (STD)
  • AT4 PREFERRED PACKAGE includes (UG1) Universal Home Remote (A48) rear sliding power window and (U01) Roof Marker Lamps
  • ALTERNATOR 220 AMPS
  • SEATS FRONT BUCKET WITH CENTER CONSOLE (STD)
  • MULTICOLOR 15 DIAGONAL HEAD-UP DISPLAY
  • JET BLACK WITH KALAHARI ACCENTS PERFORATED FRONT LEATHER SEATING SURFACES
  • Lane Departure Warning
  • Front Collision Mitigation
  • Front Collision Warning
  • Automatic Highbeams
  • Tow Hitch
  • Keyless Start
  • Locking/Limited Slip Differential
  • Four Wheel Drive
  • Tow Hooks
  • Power Steering
  • ABS
  • 4-Wheel Disc Brakes
  • Aluminum Wheels
  • Tires - Front All-Terrain
  • Tires - Rear All-Terrain
  • Conventional Spare Tire
  • Bed Liner
  • Daytime Running Lights
  • LED Headlights
  • Automatic Highbeams
  • Fog Lamps
  • Heated Mirrors
  • Power Mirror(s)
  • Integrated Turn Signal Mirrors
  • Power Folding Mirrors
  • Intermittent Wipers
  • Variable Speed Intermittent Wipers
  • Rain Sensing Wipers
  • Privacy Glass
  • Integrated Tailgate Step
  • AM/FM Stereo
  • Navigation System
  • MP3 Capability
  • Bluetooth® Connection
  • Auxiliary Audio Input
  • Smart Device Integration
  • Satellite Radio
  • Requires Subscription
  • Satellite Radio
  • Requires Subscription
  • Premium Sound System
  • Bluetooth® Connection
  • Bluetooth® Connection
  • Smart Device Integration
  • WiFi Hotspot
  • Bucket Seats
  • Leather Seats
  • Power Driver Seat
  • Driver Adjustable Lumbar
  • Power Passenger Seat
  • Passenger Adjustable Lumbar
  • Pass-Through Rear Seat
  • Rear Bench Seat
  • Heated Front Seat(s)
  • Heated Front Seat(s)
  • Cooled Front Seat(s)
  • Heated Rear Seat(s)
  • Mirror Memory
  • Seat Memory
  • Floor Mats
  • Floor Mats
  • Heated Steering Wheel
  • Adjustable Steering Wheel
  • Steering Wheel Audio Controls
  • Tire Pressure Monitor
  • Power Windows
  • Power Windows
  • Power Door Locks
  • Remote Engine Start
  • Keyless Entry
  • Power Door Locks
  • Keyless Start
  • Cruise Control
  • Adaptive Cruise Control
  • Security System
  • MP3 Capability
  • Auxiliary Audio Input
  • MP3 Capability
  • Auxiliary Audio Input
  • Climate Control
  • Multi-Zone A/C
  • A/C
  • Rear Defrost
  • Auto-Dimming Rearview Mirror
  • Front Collision Mitigation
  • Front Collision Warning
  • Traction Control
  • Stability Control
  • Daytime Running Lights
  • Daytime Running Lights
  • Driver Air Bag
  • Passenger Air Bag
  • Front Side Air Bag
  • Front Head Air Bag
  • Rear Head Air Bag
  • Passenger Air Bag Sensor
  • Telematics
  • Requires Subscription
  • Rear Parking Aid
  • Back-Up Camera
  • Aerial View Display System
  • Back-Up Camera
  • Cross-Traffic Alert
  • Blind Spot Monitor
  • Lane Departure Warning
  • Front Collision Warning
  • Front Collision Mitigation
  • Driver Restriction Features
  • Tire Pressure Monitor
  • Telematics
  • Navigation from Telematics
  • Requires Subscription
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Tax, title, license, documentation, and dealer fees (unless itemized above) are extra. Not available with special finance or lease offers. Prices may not reflect all accessories by dealer, including conversion vehicles.The Thornhill Value+Plus 10years/150,000miles Warranty available on most New Models Excluding Diesel Trucks, 2500 or 3500 Series Pickup Trucks. When applied Thornhill Trade Assist is Available on 2010 & Newer Model Automobile Trade-In, Running/Working/Drive-able Condition. Automobiles Only…Not Available On Other Trade-In Items. See Dealer For All Offers and Details.