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NEW 2026 GMC Sierra 2500HD AT4 for sale in Alton IL from Quality Buick GMC Cadillac

Stock : T26018 VIN : 1GT4UPEY6TF122196 MSRP : $88,265
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Exterior : Summit White - White   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 Quality Buick GMC Cadillac in Alton IL
Vehicle Description
Equipment
This 3/4 ton pickup offers Apple CarPlay for seamless connectivity. The GMC Sierra is pure luxury with a heated steering wheel. An off-road package is equipped on this 2026 GMC Sierra 2500. This unit features a high end BOSE stereo system. This model features a hands-free Bluetooth phone system. The GMC Sierra’s Lane Departure Warning helps keep you in your lane. This vehicle has automated speed control that adjusts to maintain a safe following distance, enhancing highway driving convenience. Start this vehicle from inside with remote start. with XM/Sirus Satellite Radio you are no longer restricted by poor quality local radio stations while driving this vehicle. Anywhere on the planet, you will have hundreds of digital stations to choose from. The leather seats in the vehicle are a must for buyers looking for comfort, durability, and style. Protect this model from unwanted accidents with a cutting edge backup camera system.

Packages
AT4 Premium Plus Package: Power Sunroof; Off-Road High Clearance Step; Technology Package. Preferred Equipment Group 4SB: LED Cargo Area Lighting; Trailer Side Blind Zone Alert; SiriusXM with 360L Trial Subscription; Remote Vehicle Starter System; Safety Alert Seat; Ultrasonic Front and Rear Park Assist; Trailer Cam Provisions and Trailer Viewing Software; Electric Rear-Window Defogger; Floor-Mounted Center Console; Gloss Black Header Grille and Grille Insert Bars; Unauthorized Entry Theft-Deterrent System; Bed View Camera with Two Trailer Camera Provisions; Front Rain-Sensing Wipers; Sierra HD Pro Safety; Wireless Phone Projection; 2 USB Ports; Rear Cross Traffic Alert; 120-Volt Instrument Panel Power Outlet; 2 Charge/data USB Ports Inside Center Console; Heated Driver and Front Outboard Passenger Seats; Wireless Charging; X31 Off-Road Package; Front Premium Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Rear Premium Floor Liners with Removable Carpet Insert; 2 Charge-Only Rear USB Ports; OnStar Services Capable; 120-Volt Bed Mounted Power Outlet; Heated 2nd Row Outboard Seats; Power Front Passenger Windows with Express Up/down; Bose Premium 7-Speaker Sound System; 2-Speed Active Transfer Case; Deep-Tinted Glass; Spray-On Pickup Bedliner with GMC Logo; HD Surround Vision; Ventilated Driver and Front Passenger Seats; Manual Tilt-Wheel/telescoping Steering Column; Keyless Open and Start; ProGrade Trailering System; Push Button Start; Rear Wheelhouse Liners. AT4 Preferred Package: Power Sliding Rear Window with Defogger; LED Smoked Amber Roof Marker Lamps; Universal Home Remote. Technology Package. Off-Road High Clearance Step. Power Sunroof. Gooseneck/5th Wheel Prep Package. LED Smoked Amber Roof Marker Lamps. **Equipment listed is based on original vehicle build and subject to change. Please confirm the accuracy of the included equipment by calling the dealer prior to purchase.**
Vehicle Description
Equipment
This 3/4 ton pickup offers Apple CarPlay for seamless connectivity. The GMC Sierra is pure luxury with a heated steering wheel. An off-road package is equipped on this 2026 GMC Sierra 2500. This unit features a high end BOSE stereo system. This model features a hands-free Bluetooth phone system. The GMC Sierra’s Lane Departure Warning helps keep you in your lane. This vehicle has automated speed control that adjusts to maintain a safe following distance, enhancing highway driving convenience. Start this vehicle from inside with remote start. with XM/Sirus Satellite Radio you are no longer restricted by poor quality local radio stations while driving this vehicle. Anywhere on the planet, you will have hundreds of digital stations to choose from. The leather seats in the vehicle are a must for buyers looking for comfort, durability, and style. Protect this model from unwanted accidents with a cutting edge backup camera system.

Packages
AT4 Premium Plus Package: Power Sunroof; Off-Road High Clearance Step; Technology Package. Preferred Equipment Group 4SB: LED Cargo Area Lighting; Trailer Side Blind Zone Alert; SiriusXM with 360L Trial Subscription; Remote Vehicle Starter System; Safety Alert Seat; Ultrasonic Front and Rear Park Assist; Trailer Cam Provisions and Trailer Viewing Software; Electric Rear-Window Defogger; Floor-Mounted Center Console; Gloss Black Header Grille and Grille Insert Bars; Unauthorized Entry Theft-Deterrent System; Bed View Camera with Two Trailer Camera Provisions; Front Rain-Sensing Wipers; Sierra HD Pro Safety; Wireless Phone Projection; 2 USB Ports; Rear Cross Traffic Alert; 120-Volt Instrument Panel Power Outlet; 2 Charge/data USB Ports Inside Center Console; Heated Driver and Front Outboard Passenger Seats; Wireless Charging; X31 Off-Road Package; Front Premium Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Rear Premium Floor Liners with Removable Carpet Insert; 2 Charge-Only Rear USB Ports; OnStar Services Capable; 120-Volt Bed Mounted Power Outlet; Heated 2nd Row Outboard Seats; Power Front Passenger Windows with Express Up/down; Bose Premium 7-Speaker Sound System; 2-Speed Active Transfer Case; Deep-Tinted Glass; Spray-On Pickup Bedliner with GMC Logo; HD Surround Vision; Ventilated Driver and Front Passenger Seats; Manual Tilt-Wheel/telescoping Steering Column; Keyless Open and Start; ProGrade Trailering System; Push Button Start; Rear Wheelhouse Liners. AT4 Preferred Package: Power Sliding Rear Window with Defogger; LED Smoked Amber Roof Marker Lamps; Universal Home Remote. Technology Package. Off-Road High Clearance Step. Power Sunroof. Gooseneck/5th Wheel Prep Package. LED Smoked Amber Roof Marker Lamps. **Equipment listed is based on original vehicle build and subject to change. Please confirm the accuracy of the included equipment by calling the dealer prior to purchase.**
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 Sales
Quality Buick GMC Cadillac - Buick GMC NEW Cars
Web : qualitypreownedofstl.com
Email : sales@qualitygmcars.com
855-936-3030
1620 East Homer Adams Parkway
Alton, IL 62002
RE : 2026 GMC Sierra 2500HD AT4

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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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