5655 S Lindbergh Blvd. St. Louis, MO 63123

CALL TODAY: (314) 310-7283

Dave Sinclair Buick GMC Truck
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NEW 2026 GMC Sierra 2500HD AT4 for sale in St. Louis MO from Dave Sinclair Buick GMC Truck

Stock : T261507 VIN : 1GT4UPEY1TF311015 Sale Price : $78,842
Exterior : Sterling Metallic - Gray   Interior : Jet Black with Kalahari accents Leather  
Mileage : 6 Fuel : Diesel Fuel MPG : City / HWY   Transmission : Automatic
Drive Type : 4WD Engine : 6.6L Cylinders : 8 HP : 470 @ 2800 rpm  

- NEW -
2026 GMC Sierra 2500HD AT4 at Dave Sinclair Buick GMC Truck in St. Louis MO
Vehicle Description
Thank you for choosing Dave Sinclair Buick GMC This 2026 GMC Sierra 2500HD AT4, has a Sterling Metallic exterior and a Jet Black with Kalahari accents interior. Please call us at (314) 272-4060 and reference stock number T261507 for further details. WHY THIS VEHICLE?

Preferred Equipment Group 4SB

  • SiriusXM with 360L Trial Subscription
  • Power Front Passenger Windows with Express Up/down
  • Deep-Tinted Glass
  • Keyless Open and Start
  • Rear Wheelhouse Liners
  • Rear Premium Floor Liners with Removable Carpet Insert
  • Front Premium Floor Liners with Removable Carpet Insert
  • Push Button Start
  • Remote Vehicle Starter System
  • Electric Rear-Window Defogger
  • Front Rain-Sensing Wipers
  • Spray-On Pickup Bedliner with GMC Logo
  • Floor-Mounted Center Console
  • Gloss Black Header Grille and Grille Insert Bars
  • Safety Alert Seat
  • Wireless Charging
  • Heated Driver and Front Outboard Passenger Seats
  • Heated 2nd Row Outboard Seats
  • 120-Volt Bed Mounted Power Outlet
  • 120-Volt Instrument Panel Power Outlet
  • Ventilated Driver and Front Passenger Seats
  • Manual Tilt-Wheel/telescoping Steering Column
  • 2-Speed Active Transfer Case
  • Sierra HD Pro Safety
  • Wireless Phone Projection
  • ProGrade Trailering System
  • Trailer Cam Provisions and Trailer Viewing Software
  • 2 Charge/data USB Ports Inside Center Console
  • 2 USB Ports
  • 2 Charge-Only Rear USB Ports
  • Ultrasonic Front and Rear Park Assist
  • OnStar Services Capable
  • LED Cargo Area Lighting
  • Rear Cross Traffic Alert
  • Steering Wheel Audio Controls
  • Trailer Side Blind Zone Alert
  • Bose Premium 7-Speaker Sound System
  • Unauthorized Entry Theft-Deterrent System
  • HD Surround Vision
  • Bed View Camera with Two Trailer Camera Provisions
  • X31 Off-Road Package

AT4 Premium Plus Package ($4,035 value)

  • Power Sunroof
  • Technology Package
  • Off-Road High Clearance Step

AT4 Preferred Package

  • Power Sliding Rear Window with Defogger
  • LED Smoked Amber Roof Marker Lamps
  • Universal Home Remote

Safety and Security

  • Forward collision mitigation - Forward thinking. You look away for just a second and suddenly the vehicle in front of you has stopped. That’s when the forward collision mitigation system comes to life. When it senses an impending impact, it will activate a combination of features to help prevent or reduce the severity of an accident. Forward collision mitigation is always looking ahead.
  • Pedestrian impact prevention - An extra step toward safety. Pedestrians don’t always stop, look, and listen, but with Pedestrian Impact Prevention, your vehicle is equipped to better see them and avoid them. This system constantly monitors the road ahead to identify and track pedestrians. It projects that image to an interior display screen, AND should an impact become likely, Pedestrian impact prevention takes steps to avoid a collision.
  • Rear camera - Watching your back! The rear camera helps you see obstacles and hazards you otherwise couldn’t by showing enhanced images of what is behind you. The rear camera is an extra set of eyes that’s both convenient and safe.

Technology and Telematics

  • Apple CarPlay/Android Auto smart device wireless mirroring
  • Mobile hotspot - WiFi on the fly. Connect your devices to the Internet through your vehicle?s private mobile hotspot and take the internet wherever your journey takes you, without eating up your data allowance. Find the hotspot with mobile hotspot.
EMISSIONS, FEDERAL REQUIREMENTS, ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE, TRANSMISSION, 10-SPEED AUTOMATIC, GVWR, 11,350 LBS. (5148 KG), REAR AXLE, 3.42 RATIO, WHEELS, 20 (50.8 CM) HIGH GLOSS BLACK ALUMINUM WHEELS, TIRES, LT275/65R20 ALL-TERRAIN, BLACKWALL, STERLING METALLIC, SEATS, FRONT BUCKET, JET BLACK WITH KALAHARI ACCENTS, PERFORATED FRONT LEATHER SEAT TRIM, AUDIO SYSTEM, 13.4 DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM WITH GOOGLE BUILT IN APPS SUCH AS NAVIGATION AND VOICE ASSISTANCE, AT4 PREMIUM PLUS PACKAGE, TECHNOLOGY PACKAGE, AT4 PREFERRED PACKAGE, ENGINE BLOCK HEATER, ALTERNATOR, 220 AMP, EXHAUST BRAKE, SUNROOF, POWER, LPO, OFF-ROAD HIGH CLEARANCE STEPS, WINTER GRILLE COVER, LAMPS, SMOKED AMBER ROOF MARKER, (LED), LICENSE PLATE KIT, FRONT, INCANDESCENT LIGHTING, MULTICOLOR 15 DIAGONAL HEAD-UP DISPLAY, WINDOW, POWER, REAR SLIDING WITH REAR DEFOGGER, UNIVERSAL HOME REMOTE, REAR CAMERA MIRRORPlease do not hesitate to contact us with any questions you may have. Our staff is happy to answer any and all inquiries in a timely fashion. We look forward to doing business with you!
Vehicle Description
Thank you for choosing Dave Sinclair Buick GMC This 2026 GMC Sierra 2500HD AT4, has a Sterling Metallic exterior and a Jet Black with Kalahari accents interior. Please call us at (314) 272-4060 and reference stock number T261507 for further details. WHY THIS VEHICLE?

Preferred Equipment Group 4SB

  • SiriusXM with 360L Trial Subscription
  • Power Front Passenger Windows with Express Up/down
  • Deep-Tinted Glass
  • Keyless Open and Start
  • Rear Wheelhouse Liners
  • Rear Premium Floor Liners with Removable Carpet Insert
  • Front Premium Floor Liners with Removable Carpet Insert
  • Push Button Start
  • Remote Vehicle Starter System
  • Electric Rear-Window Defogger
  • Front Rain-Sensing Wipers
  • Spray-On Pickup Bedliner with GMC Logo
  • Floor-Mounted Center Console
  • Gloss Black Header Grille and Grille Insert Bars
  • Safety Alert Seat
  • Wireless Charging
  • Heated Driver and Front Outboard Passenger Seats
  • Heated 2nd Row Outboard Seats
  • 120-Volt Bed Mounted Power Outlet
  • 120-Volt Instrument Panel Power Outlet
  • Ventilated Driver and Front Passenger Seats
  • Manual Tilt-Wheel/telescoping Steering Column
  • 2-Speed Active Transfer Case
  • Sierra HD Pro Safety
  • Wireless Phone Projection
  • ProGrade Trailering System
  • Trailer Cam Provisions and Trailer Viewing Software
  • 2 Charge/data USB Ports Inside Center Console
  • 2 USB Ports
  • 2 Charge-Only Rear USB Ports
  • Ultrasonic Front and Rear Park Assist
  • OnStar Services Capable
  • LED Cargo Area Lighting
  • Rear Cross Traffic Alert
  • Steering Wheel Audio Controls
  • Trailer Side Blind Zone Alert
  • Bose Premium 7-Speaker Sound System
  • Unauthorized Entry Theft-Deterrent System
  • HD Surround Vision
  • Bed View Camera with Two Trailer Camera Provisions
  • X31 Off-Road Package

AT4 Premium Plus Package ($4,035 value)

  • Power Sunroof
  • Technology Package
  • Off-Road High Clearance Step

AT4 Preferred Package

  • Power Sliding Rear Window with Defogger
  • LED Smoked Amber Roof Marker Lamps
  • Universal Home Remote

Safety and Security

  • Forward collision mitigation - Forward thinking. You look away for just a second and suddenly the vehicle in front of you has stopped. That’s when the forward collision mitigation system comes to life. When it senses an impending impact, it will activate a combination of features to help prevent or reduce the severity of an accident. Forward collision mitigation is always looking ahead.
  • Pedestrian impact prevention - An extra step toward safety. Pedestrians don’t always stop, look, and listen, but with Pedestrian Impact Prevention, your vehicle is equipped to better see them and avoid them. This system constantly monitors the road ahead to identify and track pedestrians. It projects that image to an interior display screen, AND should an impact become likely, Pedestrian impact prevention takes steps to avoid a collision.
  • Rear camera - Watching your back! The rear camera helps you see obstacles and hazards you otherwise couldn’t by showing enhanced images of what is behind you. The rear camera is an extra set of eyes that’s both convenient and safe.

Technology and Telematics

  • Apple CarPlay/Android Auto smart device wireless mirroring
  • Mobile hotspot - WiFi on the fly. Connect your devices to the Internet through your vehicle?s private mobile hotspot and take the internet wherever your journey takes you, without eating up your data allowance. Find the hotspot with mobile hotspot.
EMISSIONS, FEDERAL REQUIREMENTS, ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE, TRANSMISSION, 10-SPEED AUTOMATIC, GVWR, 11,350 LBS. (5148 KG), REAR AXLE, 3.42 RATIO, WHEELS, 20 (50.8 CM) HIGH GLOSS BLACK ALUMINUM WHEELS, TIRES, LT275/65R20 ALL-TERRAIN, BLACKWALL, STERLING METALLIC, SEATS, FRONT BUCKET, JET BLACK WITH KALAHARI ACCENTS, PERFORATED FRONT LEATHER SEAT TRIM, AUDIO SYSTEM, 13.4 DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM WITH GOOGLE BUILT IN APPS SUCH AS NAVIGATION AND VOICE ASSISTANCE, AT4 PREMIUM PLUS PACKAGE, TECHNOLOGY PACKAGE, AT4 PREFERRED PACKAGE, ENGINE BLOCK HEATER, ALTERNATOR, 220 AMP, EXHAUST BRAKE, SUNROOF, POWER, LPO, OFF-ROAD HIGH CLEARANCE STEPS, WINTER GRILLE COVER, LAMPS, SMOKED AMBER ROOF MARKER, (LED), LICENSE PLATE KIT, FRONT, INCANDESCENT LIGHTING, MULTICOLOR 15 DIAGONAL HEAD-UP DISPLAY, WINDOW, POWER, REAR SLIDING WITH REAR DEFOGGER, UNIVERSAL HOME REMOTE, REAR CAMERA MIRRORPlease do not hesitate to contact us with any questions you may have. Our staff is happy to answer any and all inquiries in a timely fashion. We look forward to doing business with you!
Features Overview
•  4-Wheel Disc Brakes
•  8 Cylinder Engine
•  A/C
•  ABS
•  Adaptive Cruise Control
•  Adjustable Steering Wheel
•  Aerial View Display System
•  Aluminum Wheels
•  AM/FM Stereo
•  Auto-Dimming Rearview Mirror
•  Automatic Highbeams
•  Auxiliary Audio Input
•  Back-Up Camera
•  Bed Liner
•  Blind Spot Monitor
•  Bluetooth Connection
•  Bucket Seats
•  Climate Control
•  Conventional Spare Tire
•  Cooled Front Seat
•  Cross-Traffic Alert
•  Cruise Control
•  Daytime Running Lights
•  Diesel Fuel
•  Driver Adjustable Lumbar
•  Driver Air Bag
•  Driver Restriction Features
•  Floor Mats
•  Fog Lamps
•  Four Wheel Drive
•  Front Collision Mitigation
•  Front Collision Warning
•  Front Head Air Bag
•  Front Side Air Bag
•  Heated Front Seat
•  Heated Mirrors
•  Heated Rear Seat
•  Heated Steering Wheel
•  Integrated Tailgate Step
•  Integrated Turn Signal Mirrors
•  Intermittent Wipers
•  Keyless Entry
•  Keyless Start
•  Lane Departure Warning
•  Leather Seats
•  Locking/Limited Slip Differential
•  Mirror Memory
•  MP3 Capability
•  Multi-Zone A/C
•  Navigation System
•  Passenger Adjustable Lumbar
•  Passenger Air Bag
•  Passenger Air Bag On/Off Switch
•  Passenger Air Bag Sensor
•  Power Door Locks
•  Power Driver Seat
•  Power Folding Mirrors
•  Power Mirror
•  Power Passenger Seat
•  Power Steering
•  Power Windows
•  Premium Sound System
•  Privacy Glass
•  Rain Sensing Wipers
•  Rear Bench Seat
•  Rear Defrost
•  Rear Head Air Bag
•  Rear Parking Aid
•  Remote Engine Start
•  Requires Subscription
•  Running Boards/Side Steps
•  Satellite Radio
•  Seat Memory
•  Security System
•  Smart Device Integration
•  Stability Control
•  Steering Wheel Audio Controls
•  Telematics
•  Tire Pressure Monitor
•  Tires - Front All-Terrain
•  Tires - Rear All-Terrain
•  Tow Hitch
•  Tow Hooks
•  Traction Control
•  Turbocharged
•  Variable Speed Intermittent Wipers
•  WiFi Hotspot
Detailed Interior Features
•  Adaptive Cruise Control
•  Air conditioning : dual-zone automatic climate control
•  Air vents : rear
•  Assist handles front A-pillar mounted for driver and passenger : rear B-pillar mounted
•  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
•  Bluetooth for phone connectivity to vehicle infotainment system
•  Bose Sound System : premium 7-speaker system with Richbass woofer
•  Center Console : floor-mounted with cup holders / cell phone storage / power cord management / hanging file folder capability
•  Compass : located in instrument cluster
•  Defogger : rear-window electric
•  Door locks : power
•  Driver Information Center : enhanced / 12.3" diagonal reconfigurable multicolor digital display
•  Driver memory recalls driver "presets" for power driver seat and outside mirrors
•  Exterior Temperature Display : located in radio display
•  Floor covering : color-keyed carpeting
•  GMC Premium information Display- 13.4" diagonal Multicolor touch screen
•  Keyless Open and Start includes remote keyless entry
•  Mirror : inside rearview auto-dimming
•  Power outlet : bed mounted / 120-volt
•  Power outlet : instrument panel / 120-volt
•  Premium Floor Liners with removable carpet insert : front
•  Premium Floor Liners with removable carpet insert : rear
•  Rear Seat Reminder
•  Remote vehicle starter system
•  Seat : Up-level Rear with Storage Package 60/40 folding bench / includes full-length bench seat / seatback storage on left and right side / center fold out armrest with 2 cupholders / full cab width under-seat storage /
•  Seat adjuster : driver 10-way power including lumbar
•  Seat adjuster : passenger 10-way power including lumbar
•  Seat trim : Perforated front Leather
•  Seating : heated driver and front outboard passenger
•  Seats : front bucket with center console
•  Seats : heated second row outboard seats
•  Seats : ventilated driver and front passenger
•  SiriusXM Trial Subscription
•  SiriusXM with 360L Trial Subscription. SiriusXM with 360L transforms your customers’ ride with our most extensive and personalized radio experience on the road.
•  Steering column : manual Tilt-Wheel and telescoping
•  Steering wheel : heated
•  Steering wheel : wrapped
•  Steering wheel audio controls
•  Theft-deterrent system : unauthorized entry
•  USB ports : charge-only / rear
•  USB Ports : 2 located on console
•  USB Ports : 2 / Charge/Data ports located inside center console
•  Wi-Fi Hotspot capable
•  Window : power front / passenger express up/down
•  Windows : power front / drivers express up/down
•  Windows : power rear / express down
•  Wireless Charging
•  Wireless phone projection for Apple CarPlay and Android Auto
Detailed Exterior Features
•  Bed Step : Black integrated on forward portion of bed on driver and passenger side
•  Bedliner : Spray-on / Pickup bedliner with GMC logo
•  Bumper : front / body-color lower
•  Bumper : rear body-color with bumper CornerSteps
•  Cargo tie downs : fixed / rated at 500 lbs per corner
•  CornerStep : rear bumper
•  Door handles : body-color
•  Fog lamps : LED
•  Glass : deep-tinted
•  Grille
•  Headlamps : Animated LED projectors LED turn signals and Daytime Running Lamps
•  IntelliBeam : automatic high beam on/off
•  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 : high gloss Black
•  Mirrors : outside power-adjustable vertical trailering with heated and auto-dimming upper glass / lighting
•  Moldings : beltline / Black
•  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
•  Tailgate : gate function manual with EZ Lift includes power lock and release / includes hitch area light
•  Tailgate and bed rail protection caps : top
•  Taillamps : Animated LED Signature Tail / Stop / turn and Reverse lamps
•  Tire : spare LT275/70R18 all-terrain / blackwall
•  Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
•  Tires : LT275/65R20 all-terrain / blackwall
•  Wheelhouse liners : rear
•  Wheels : 20" High Gloss black aluminum wheels 8 spokes
•  Wipers : front rain-sensing
Detailed Safety Features
•  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
•  Automatic Emergency Braking
•  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
•  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
•  Daytime Running Lamps : LED signature lighting
•  Following Distance Indicator
•  Forward Collision Alert
•  Front and Rear Park Assist : ultrasonic
•  Front Pedestrian Braking
•  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
•  Hitch Guidance with Hitch View with image adjustment : Pan/Zoom/Tilt
•  Lane Departure Warning
•  LED Signature DRL’s
•  OnStar Equipped (service required)
•  OnStar Equipped (service required)
•  Rear Cross Traffic Alert
•  Rear Seat Belt Indicator
•  Safety Alert Seat
•  Seat Belt Adjustable Guide Loops : front row only
•  StabiliTrak : stability control system with Proactive Roll Avoidance and traction control / includes electronic trailer sway control and hill start assist
•  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
•  Tire Pressure Monitoring System : auto learn includes Tire Fill Alert
•  Trailer Camera Provisions and trailer viewing software
•  Trailer Side Blind Zone Alert
•  Trailering Information Label provides max trailer ratings for tongue weight : conventional / gooseneck and 5th wheel trailering
Detailed Mechanical Features
•  Air filter : heavy-duty
•  Air filtration monitoring
•  Alternator : 170 amps
•  Auto-locking rear differential
•  Battery : heavy-duty 720 cold-cranking amps/80 Amp-hr maintenance-free with rundown protection and retained accessory power
•  Brake lining wear indicator
•  Brakes : 4-wheel antilock / 4-wheel disc with DURALIFE rotors
•  Capless Fuel Fill
•  Cooling : external engine oil cooler
•  Four wheel drive
•  Frame : fully-boxed / hydroformed front section and a fully-boxed stamped rear section
•  GVWR : 10850 lbs.
•  Hill Descent Control
•  In-Vehicle Trailering App : System includes checklist / trailer maintenance reminders / trailer security alerts / trailer mileage / towith haul reminder / trailer electrical diagnostics and Trailer Tire Pressure Monitor System module
•  Pickup bed includes bed assist step
•  Push Button Start
•  Rear axle : 3.73 ratio
•  Recovery hooks : Red
•  Skid Plates protect the oil pan : front axle and transfer case
•  Steering : Digital Variable Steering Assist this system automatically adjusts steering based on speed / road conditions / and other inputs to reduce driver effort and fatigue
•  Suspension : Off-Road includes twin-tube shocks
•  Trailer brake controller : integrated
•  Transfer case : two-speed active / electronic Autotrac with push button control
Detailed Autovalue Features
•  Adaptive Cruise Control
•  Back-Up Camera
•  Blind Spot Monitor
•  Bluetooth Connection
•  Front Collision Mitigation
•  Heated Front Seat
•  Keyless Entry
•  Lane Departure Warning
•  Leather Seats
•  Navigation System
•  Rain Sensing Wipers
•  Remote Engine Start
•  Satellite Radio
•  Smart Device Integration
•  WiFi Hotspot
•  Adaptive Cruise Control
Detailed Package Features
•  ProGrade Trailering System includes In-vehicle Trailering App
•  Sierra HD Pro Safety includes Automatic Emergency Braking
•  Trailering Package includes trailer hitch : 7-pin and 4-pin connectors and Hitch Guidance
•  X31 Off-Road Package includes skid plates / Off-Road suspension and Twin-tube Rancho shocks
Contact Information
Please Contact Nick Godfrey
Dave Sinclair Buick GMC NEW Cars
Web : affordablebuicks.com
Email : dperez@dsbgstl.com
(314) 310-7283
5655 S Lindbergh Blvd.
St. Louis, MO 63123
RE : 2026 GMC Sierra 2500HD AT4

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My Information

Prices subject to change without notice and do not include Title, License, Registration Fees, State or Local Taxes or Processing Fees, if any. Please contact seller first for vehicle availability. Although every effort is made to present accurate and reliable information, use of this information is voluntary, and should only be deemed reliable after an independent review of its accuracy, completeness, and timeliness. It is the sole responsibility of the customer to verify the existence of options, accessories and the vehicle condition before time of sale. Any and all differences must be addressed prior to time of sale. No expressed or implied warranties, including the availability or condition of the equipment listed is made. EPA mileage estimates for comparison purposes only. Actual mileage may vary depending on driving conditions, driving habits, and vehicle maintenance.
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