5655 S Lindbergh Blvd. St. Louis, MO 63123

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Dave Sinclair Buick GMC Truck
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2026 GMC Sierra 1500 AT4 for sale in St. Louis MO from Dave Sinclair Buick GMC Truck
Stock : T261550A VIN : 1GTUUEE81TZ120312 Sale Price : $55,438
Exterior : Onyx Black - Black   Interior : Jet Black with Kalahari accents Leather  
Mileage : 28,893 Fuel : Diesel Fuel MPG : 21-22 City / 24-26 HWY   Transmission : Automatic
Drive Type : 4WD Engine : Duramax 3.0L Turbo-Diesel I6 Cylinders : 6 HP : 305 @ 3750 rpm  

2026 GMC Sierra 1500 AT4 at Dave Sinclair Buick GMC Truck in St. Louis MO
Shop with Confidence
Vehicle Description
Why BUY from Dave Sinclair Buick GMC?When you choose this Onyx Black 2026 GMC Sierra 1500 AT4 with 28,893 miles, you are not just buying a used vehicle - you are investing in quality, reliability and peace of mind. Our clientele depend on us for Transparent Pricing, Convenience and, most importantly, Customer FIRST Service!No Accidents! One Owner! What this vehicle includes:

AT4 CarbonPro Edition ($1,125 value)

  • Carbon Fiber Composite Bed
  • CarbonPro Fender Hard Badge
  • MultiPro Tailgate Audio System by Kicker

AT4 Premium Package ($1,045 value)

  • Off-Road High Clearance Step

Technology Package ($1,525 value)

  • Rear Camera Mirror
  • Multicolor 15 Diagonal Head-Up Display
  • Bed View Camera

Preferred Equipment Group 4SB

  • Power Front Passenger Windows with Express Up/down
  • Power Rear Windows with Express Down
  • Deep-Tinted Glass
  • Power Door Locks
  • Keyless Open and Start
  • Power Front Windows with Driver Express Up/down
  • Rear Wheelhouse Liners
  • Color-Keyed Carpeting Floor Covering
  • 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
  • Auto-Locking Rear Differential
  • Black Chrome Grille Insert Bars
  • Hill Descent Control
  • Integrated Trailer Brake Controller
  • Heavy-Duty Air Filter
  • Wireless Charging
  • Heated Driver and Front Outboard Passenger Seating
  • Heated 2nd Row Outboard Seats
  • 120-Volt Interior Power Outlet
  • Ventilated Driver and Front Passenger Seats
  • 220 Amp Alternator
  • Power Rake and Telescoping Steering Column
  • 2-Speed Transfer Case
  • 20 X 9 Machined Aluminum Wheels
  • Skid Plates
  • GMC Pro Safety
  • Hitch View
  • Trailer Camera Provisions
  • Perimeter Lighting
  • SiriusXM with 360L Trial Subscription
  • 2 Charge/data USB Ports Inside Center Console
  • 2 USB Ports
  • 2 type-C Charge-Only Rear USB Ports
  • Ultrasonic Front and Rear Park Assist
  • OnStar Services Capable
  • In-Vehicle Trailering System App
  • LED Cargo Area Lighting
  • Rear Cross Traffic Braking
  • Red Recovery Hooks
  • Steering Wheel Audio Controls
  • Rear Pedestrian Detection
  • Trailer Side Blind Zone Alert
  • Premium Bose 7-Speaker Sound System
  • Theft Deterrent System (unauthorized Entry)
  • HD Surround Vision
  • Wi-Fi Hotspot Capable
  • Off-Road Suspension
  • Trailering Package

AT4 Preferred Package

  • Power Sliding Rear Window with Rear Defogger
  • Universal Home Remote

Safety and Security

  • The vehicle is equipped with a system that senses, and then prepares, the vehicle and/or occupants, for an impending forward collision.
  • The vehicle constantly monitors the roadway in front of the vehicle and identifies and tracks pedestrians on an interior display. If the system determines a likely impact, it will automatically take preventative steps to avoid hitting the pedestrian.
  • The vehicle is equipped with a camera that displays an image of the area behind the vehicle on an interior display.

Technology and Telematics

  • Apple CarPlay/Android Auto smart device wireless mirroring
  • Mobile devices can wirelessly connect to the internet through the vehicle’s private mobile network.
EMISSIONS, FEDERAL REQUIREMENTS, ENGINE, DURAMAX 3.0L TURBO-DIESEL I6, TRANSMISSION, 10-SPEED AUTOMATIC WITH ELECTRONIC PRECISION SHIFT, ELECTRONICALLY CONTROLLED, GVWR, 7200 LBS. (3266 KG), REAR AXLE, 3.23 RATIO, WHEELS, 20 X 9 (50.8 CM X 22.9 CM) MACHINED ALUMINUM, TIRES, 275/60R20SL ALL-TERRAIN, BLACKWALL, TIRE, SPARE 255/80R17SL ALL-SEASON, BLACKWALL, ONYX BLACK, SEATS, FRONT BUCKET, JET BLACK WITH KALAHARI ACCENTS, PERFORATED LEATHER FRONT SEAT TRIM, 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, AT4 PREMIUM PACKAGE, TECHNOLOGY PACKAGE, AT4 CARBONPRO EDITION, AT4 PREFERRED PACKAGE, ENGINE BLOCK HEATER, CARBON FIBER COMPOSITE BED, SUNROOF, POWER, LPO, OFF-ROAD HIGH CLEARANCE STEPS, WINDOW, POWER, REAR SLIDING WITH REAR DEFOGGER, LICENSE PLATE KIT, FRONT, LPO, MULTIPRO TAILGATE AUDIO SYSTEM BY KICKER, MULTICOLOR 15 DIAGONAL HEAD-UP DISPLAY, UNIVERSAL HOME REMOTE, REAR CAMERA MIRROR, INSIDE REARVIEW AUTO-DIMMING, BED VIEW CAMERA Come on in to Dave Sinclair Buick GMC today at 5655 South Lindbergh Blvd St Louis MO 63123 or call (314) 272-4060 to schedule a test drive!
Shop with Confidence
Vehicle Description
Why BUY from Dave Sinclair Buick GMC?When you choose this Onyx Black 2026 GMC Sierra 1500 AT4 with 28,893 miles, you are not just buying a used vehicle - you are investing in quality, reliability and peace of mind. Our clientele depend on us for Transparent Pricing, Convenience and, most importantly, Customer FIRST Service!No Accidents! One Owner! What this vehicle includes:

AT4 CarbonPro Edition ($1,125 value)

  • Carbon Fiber Composite Bed
  • CarbonPro Fender Hard Badge
  • MultiPro Tailgate Audio System by Kicker

AT4 Premium Package ($1,045 value)

  • Off-Road High Clearance Step

Technology Package ($1,525 value)

  • Rear Camera Mirror
  • Multicolor 15 Diagonal Head-Up Display
  • Bed View Camera

Preferred Equipment Group 4SB

  • Power Front Passenger Windows with Express Up/down
  • Power Rear Windows with Express Down
  • Deep-Tinted Glass
  • Power Door Locks
  • Keyless Open and Start
  • Power Front Windows with Driver Express Up/down
  • Rear Wheelhouse Liners
  • Color-Keyed Carpeting Floor Covering
  • 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
  • Auto-Locking Rear Differential
  • Black Chrome Grille Insert Bars
  • Hill Descent Control
  • Integrated Trailer Brake Controller
  • Heavy-Duty Air Filter
  • Wireless Charging
  • Heated Driver and Front Outboard Passenger Seating
  • Heated 2nd Row Outboard Seats
  • 120-Volt Interior Power Outlet
  • Ventilated Driver and Front Passenger Seats
  • 220 Amp Alternator
  • Power Rake and Telescoping Steering Column
  • 2-Speed Transfer Case
  • 20 X 9 Machined Aluminum Wheels
  • Skid Plates
  • GMC Pro Safety
  • Hitch View
  • Trailer Camera Provisions
  • Perimeter Lighting
  • SiriusXM with 360L Trial Subscription
  • 2 Charge/data USB Ports Inside Center Console
  • 2 USB Ports
  • 2 type-C Charge-Only Rear USB Ports
  • Ultrasonic Front and Rear Park Assist
  • OnStar Services Capable
  • In-Vehicle Trailering System App
  • LED Cargo Area Lighting
  • Rear Cross Traffic Braking
  • Red Recovery Hooks
  • Steering Wheel Audio Controls
  • Rear Pedestrian Detection
  • Trailer Side Blind Zone Alert
  • Premium Bose 7-Speaker Sound System
  • Theft Deterrent System (unauthorized Entry)
  • HD Surround Vision
  • Wi-Fi Hotspot Capable
  • Off-Road Suspension
  • Trailering Package

AT4 Preferred Package

  • Power Sliding Rear Window with Rear Defogger
  • Universal Home Remote

Safety and Security

  • The vehicle is equipped with a system that senses, and then prepares, the vehicle and/or occupants, for an impending forward collision.
  • The vehicle constantly monitors the roadway in front of the vehicle and identifies and tracks pedestrians on an interior display. If the system determines a likely impact, it will automatically take preventative steps to avoid hitting the pedestrian.
  • The vehicle is equipped with a camera that displays an image of the area behind the vehicle on an interior display.

Technology and Telematics

  • Apple CarPlay/Android Auto smart device wireless mirroring
  • Mobile devices can wirelessly connect to the internet through the vehicle’s private mobile network.
EMISSIONS, FEDERAL REQUIREMENTS, ENGINE, DURAMAX 3.0L TURBO-DIESEL I6, TRANSMISSION, 10-SPEED AUTOMATIC WITH ELECTRONIC PRECISION SHIFT, ELECTRONICALLY CONTROLLED, GVWR, 7200 LBS. (3266 KG), REAR AXLE, 3.23 RATIO, WHEELS, 20 X 9 (50.8 CM X 22.9 CM) MACHINED ALUMINUM, TIRES, 275/60R20SL ALL-TERRAIN, BLACKWALL, TIRE, SPARE 255/80R17SL ALL-SEASON, BLACKWALL, ONYX BLACK, SEATS, FRONT BUCKET, JET BLACK WITH KALAHARI ACCENTS, PERFORATED LEATHER FRONT SEAT TRIM, 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, AT4 PREMIUM PACKAGE, TECHNOLOGY PACKAGE, AT4 CARBONPRO EDITION, AT4 PREFERRED PACKAGE, ENGINE BLOCK HEATER, CARBON FIBER COMPOSITE BED, SUNROOF, POWER, LPO, OFF-ROAD HIGH CLEARANCE STEPS, WINDOW, POWER, REAR SLIDING WITH REAR DEFOGGER, LICENSE PLATE KIT, FRONT, LPO, MULTIPRO TAILGATE AUDIO SYSTEM BY KICKER, MULTICOLOR 15 DIAGONAL HEAD-UP DISPLAY, UNIVERSAL HOME REMOTE, REAR CAMERA MIRROR, INSIDE REARVIEW AUTO-DIMMING, BED VIEW CAMERA Come on in to Dave Sinclair Buick GMC today at 5655 South Lindbergh Blvd St Louis MO 63123 or call (314) 272-4060 to schedule a test drive!
Features Overview
•  4-Wheel Disc Brakes
•  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 Monitoring
•  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
•  Intermittent Wipers
•  Keyless Entry
•  Keyless Start
•  Lane Departure Warning
•  Lane Keeping Assist
•  Leather Seats
•  LED Headlights
•  Locking/Limited Slip Differential
•  Mirror Memory
•  MP3 Capability
•  Multi-Zone A/C
•  Navigation from Telematics
•  Navigation System
•  Pass-Through Rear Seat
•  Passenger Adjustable Lumbar
•  Passenger Air Bag
•  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 Defrost
•  Rear Head Air Bag
•  Rear Parking Aid
•  Remote Engine Start
•  Requires Subscription
•  Satellite Radio
•  Seat Memory
•  Security System
•  Smart Device Integration
•  Stability Control
•  Steering Wheel Audio Controls
•  Straight 6 Cylinder Engine
•  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
•  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
•  Keyless Open and Start includes remote keyless entry
•  Mirror : inside rearview auto-dimming
•  Power outlet : bed mounted / 120-volt
•  Power outlet : interior power outlet / 120-volt
•  Premium Floor Liners with removable carpet insert : front
•  Premium Floor Liners with removable carpet insert : rear
•  Remote vehicle starter system
•  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 under-seat storage /
•  Seat adjuster : driver 10-way power including lumbar
•  Seat adjuster : passenger 10-way power including lumbar
•  Seat trim : Perforated leather front
•  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 : power rake and telescoping
•  Steering column lock : electrical
•  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 : Apple CarPlay / Wireless Android Auto
•  Wireless Charging
Detailed Exterior Features
•  Bedliner : Spray-on Pickup bedliner with GMC logo
•  Bumper : front / body-color lower
•  Bumper : rear body-color with corner steps
•  CornerStep : rear bumper
•  Door handles : body-color
•  Fog lamps : LED
•  Glass : deep-tinted
•  Grille
•  Headlamps : LED projectors with Fade-on/Fade-off animation / 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
•  Lighting : perimeter
•  Mirror caps : high gloss Black
•  Mirrors : outside heated power-adjustable / power-folding and driver-side auto-dimming puddle lamps / side perimeter lighting and memory
•  Tailgate : gate function manual with EZ Lift includes power lock and release / includes hitch area light
•  Tailgate : GMC MultiPro Tailgate with six functional load/access features
•  Tailgate and bed rail protection caps : top
•  Taillamps : LED LED signature taillight with LED stop / turn and reverse and Fade-on/Fade-off animation
•  Tire : spare 255/80R17SL all-season / blackwall
•  Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
•  Tires : 275/60R20SL all-terrain / blackwall
•  Wheel : 17" x 8" full-size / steel spare
•  Wheelhouse liners : rear
•  Wheels : 20" x 9" machined aluminum with Carbon Grey Metallic accents
•  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
•  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
•  Hitch View with image adjustment : Pan/Zoom/Tilt
•  Lane Keep Assist with Lane Departure Warning
•  OnStar Equipped (service required)
•  OnStar Equipped (service required)
•  Rear Cross Traffic Braking
•  Rear Pedestrian Alert
•  Rear Seat Belt Indicator
•  Rear Seat Reminder
•  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
•  Tire Pressure Monitoring System : auto learn includes Tire Fill Alert
•  Trailer Camera Provisions and trailer viewing software
•  Trailer Side Blind Zone Alert
Detailed Mechanical Features
•  Air filter : heavy-duty
•  Alternator : 220 amps
•  Auto-locking rear differential
•  Automatic Stop/Start
•  Battery : heavy-duty 850 cold-cranking amps/95 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
•  Cargo tie downs : fixed
•  Electronic Precision Shift and steering column paddle shifters
•  Engine : Duramax 3.0L Turbo-Diesel I6
•  Exhaust : aluminized stainless-steel muffler and tailpipe
•  Exhaust : dual system
•  Four wheel drive
•  Frame : fully-boxed / hydroformed front section
•  GVWR / 7200 lbs.
•  Hill Descent Control
•  Pickup bed
•  Push Button Start
•  Rear axle : 3.23 ratio
•  Recovery hooks : Red
•  Skid Plates
•  Steering : Electric Power Steering assist / rack-and-pinion
•  Suspension : Off-Road with 2" factory installed lift and monotube shocks
•  Trailer brake controller : integrated
•  Transfer case : two-speed / 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
•  GMC Pro Safety includes
•  Trailering Package includes trailer hitch : 7-pin and 4-pin connectors and Hitch Guidance
Contact Information
Please Contact Nick Godfrey
Dave Sinclair Buick GMC Pre-Owned
Web : affordablebuicks.com
Email : dperez@dsbgstl.com		 (314) 310-7283
5655 S Lindbergh Blvd.
St. Louis, MO 63123
RE : 2026 GMC Sierra 1500 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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