0.072669982910156
Used 2026 GMC Sierra HD for sale in Auburn
Good rated
4.9 - 87 reviews
1 photos
Accident Free
No reported accidents
Vehicle Details
Unknown
Automatic
4WD
Diesel
Duramax Turbo-Diesel V8 engine 6
Unknown
Pickup
Owners
Make GMC
Model Sierra HD
Year 2026
Trim SLT
Series 2500
Engine Cylinders 8
Body Class Pickup
What was with this car history VIN 1GT4UNEY5TF309806?
Popular features
13.4" diagonal GMC Premium Infotainment System with Google built-in: 13.4" diagonal GMC Premium Infotainment System with Google built-in, includes multi-touch display, AM/FM/SiriusXM1 radio capable Bluetooth2 streaming audio for music and select phones Wireless Apple CarPlay capability for compatible phones3Wireless Android Auto capability for compatible phones4Customize and manage entertainment and vehicle feature settingUse, control and manage select smartphone apps through the Infotainment system Voice-activated technology for phone
Bluetooth: Pair your compatible mobile phone to your vehicle's infotainment system1Place and receive hands-free phone calls Store your phone's contact list in the system to place an outgoing call quickly using the touch-screen display or voice command systemWith streaming audio capability, you can listen to files stored on your phone or Bluetooth digital media device
Bose Premium Sound System: 7-speakers with Richbass wooferBose is renowned for expert sound engineering and high-quality audio and with premium speakers positioned throughout the cabinMay require additional optional equipment
SiriusXM with 360L Trial Subscription: With your trial subscription, new GM vehicles equipped with SiriusXM with 360L advance in-car technology will bring you closer to your favorite stars, artists, creators, hosts and athletes1SiriusXM with 360L transforms your ride with our most extensive and personalized radio experience on the road that lets you enjoy ad-free music, talk and news, live sports, comedy, podcasts and moreExperience SiriusXM wherever you go in your vehicle and on the SiriusXM app with personalization features to make discovering your perfect entertainment easier than ever before
Wi-Fi Hotspot capable: Terms and limitations apply. See onstar.com or dealer for details.May require additional optional equipment
Wireless phone projection: For Apple CarPlay1 and Android Auto2
18" LT275/70R18 all-terrain, blackwall spare tire: May require additional optional equipment
18" LT275/70R18E all-terrain, blackwall tires
18" machined aluminum wheels with Dark Grey metallic accents
Animated LED Signature Tail lamps with Stop, turn and Reverse lamps: LED taillamps with LED stop lights and animation
Animated LED projectors headlamps with LED turn signals and Daytime Running Lamps
Cab-mounted cargo area lamps: Activated by switch located on center switch bankIlluminates the cargo bed area
Cargo bed LED lighting: Provides light to find cargo in the bedMay require additional optional equipment
Cargo tie-downs: 12-fixed rated at 500 lbs. per corner
Chrome beltline moldings
Chrome door handles
Chrome front bumper: May require additional optional equipment
Chrome mirror caps
Chrome rear bumper: With integrated CornerStepsMay require additional optional equipment
CornerStep rear bumper: Helps make it easier to get into and out of the pickup bedLocated at each end of the rear bumperTextured step pads to help provide secure footing
Deep-tinted glass: Provides added protection from sun and glare
Front license plate bracket: Front bracket is included if displaying a front license plate is required in your state
GMC MultiPro Tailgate: Six function tailgate designed to help improve loading, unloading and accessing the cargo boxHitch area lightingPower lock and releaseMay require additional optional equipment
IntelliBeam: At speeds above 25 mph, can automatically turn vehicle's high beams on and off according to surrounding traffic conditions1
LED fog lamps
Outside power-adjustable vertical trailering mirrors with power folding/extending auto-dimming driver and passenger upper glass: Chrome mirror capsAT4 and AT4X features high gloss Black mirror caps Power folding/extendingLower convex mirrorsHeated upper glassIntegrated turn signal indicatorsPuddle lampsPerimeter lightingAuxiliary lightingExtends 3.31-inches
Rainsense automatic wipers: When turned on, will automatically clear the windshield when sensors detect varying degrees of precipitation on the windshield
Rear wheelhouse liners: Help protect your truck's rear wheelhouse area from damage caused by dirt, rocks, mud, road salt and the weatherMay require additional optional equipment
Side Bed Step: Black textured step pads help provide secure footingIntegrated on forward portion of outer bed on driver and passenger side to provide ease of access to forward portion of the bed
Smoked Amber LED roof marker lamps: Roof-mounted lamps near the front of the cab
Spare tire carrier lock: Helps keep spare tire secure
Tailgate and bed rail protection caps
Tailgate with EZ Lift assist, power lock & release: Hitch area lightingMay require additional optional equipment
Winter Grille Cover: May require additional optional equipment
10-way power driver seat with power lumbar: Includes 8-way power driver seat Includes a 2-way power lumbar control
10-way power front passenger seat: Includes 8-way power front passenger seat Includes a 2-way power lumbar control
12.3" diagonal color Driver Information Center: Includes driver personalization, warning messages and vehicle informationReplaces traditional analog gauges with fully reconfigurable high definition cluster layoutHigh definition display provides crisp, premium appearance
120-volt box-mounted power outlet: 3-prong auxiliary household-style outletLocated in the pickup bedMay require additional optional equipment
120-volt power outlet: 3-prong auxiliary household-style outletLocated on the instrument panelMakes it convenient for powering laptops, phone chargers and other electronic devicesMay require additional optional equipment
Assist handles: Front A-pillar mounted for Driver and PassengerRear B-pillar mounted
Carpeted floor covering: Color-keyed to match the interior
Compass: Located in instrument cluster
Cruise control: Maintains a selected speed while drivingAutomatically disengages when the vehicle's traction control system needs to limit wheelspin on slippery surfaces or when the StabiliTrak stability control system detects an oncoming skidSet and resume speed functionsSteering-wheel mounted controls to easily maintain and manage cruising speed
Driver memory: Press memory button 1 or 2 to program and recall preferencesMay require additional optional equipment
Dual-zone automatic climate control: Automatically maintains the selected temperatures for both the driver and front passengerAllows individual climate settings for both driver and front passengerDriver and front passenger can choose a temperature up to 30 degrees differenceMay require additional optional equipment
Front bucket seats: May require additional optional equipment
Front carpeted floor mats: Helps protect your interior from road debris and the elementsColor-keyed to match the interiorDenali models feature unique premium tufted carpeting
Front center console: Includes reconfigurable feature with cupholders, cell phone storage, power cord management and file holder capacityMay require additional optional equipment
Heated driver and front outboard passenger seats: Separate buttons on the climate control panel allow you to choose from 3 levels of warmthAt the touch of a button you can warm the cushions and seatbacks with multilevel temperature controlIndividually controlledSeats can be programmed to automatically warm up when it's cold outMay require additional optional equipment
Heated steering wheel: With the press of a button the steering wheel quickly heats up to provide additional comfort on a cold dayMay require additional optional equipment
Inside rearview auto-dimming mirror: Automatically dims the inside rearview mirror when it senses bright light from behindWhen headlamp glare is no longer detected, the mirror returns to its normal state
Keyless Open and Start: With the key fob in your possession, lock and unlock your car's doors by pressing the button on a front exterior door handle, increasing convenienceLockout protection helps you avoid locking keys in the vehicle
Manual tilt and telescoping steering column: Allows the driver to adjust the steering wheel up or down, and the steering column forward or backMay require additional optional equipment
Outside temperature display: Located in infotainment display
Power door locks: Allows you to lock and unlock doors easily whether it's from the driver or front passenger seat or from outside using the key fob (when equipped)
Power windows with driver and front passenger express-up/down: Quickly raises the window or lowers it with the touch of a buttonIf obstruction is detected, the anti-pinch feature will auto-reverse
Power windows with driver express-up/down: Quickly raises the window or lowers it with the touch of a buttonIf an obstruction is detected, the anti-pinch feature will auto-reverse
Power windows with rear express-down
Rear Seat Reminder: Helps to remind the driver to check the back seat(s) before leaving the vehicle1Activates when rear doors are opened and closed up to 10 minutes before or anytime while your vehicle is onUnder certain conditions, once the vehicle is switched off, designed to sound audible chimes and display a visual message within the driver displayActivates only once each time the vehicle is turned on and off, and would require re-activation on a second trip
Rear air vents: Provides cabin comfort for rear occupants
Rear carpeted floor mats: Helps protect your interior from road debris and the elementsColor-keyed to match the interiorDenali models feature unique premium tufted carpeting
Rear window defogger: Utilizes a warming grid to help remove fog or frost from the rear window
Remote Start: Start your vehicle remotely and step into a comfortably warmed or cooled vehicle, depending on the weather and your preset preferencesLocks doors and turns on parking lamps while the engine is runningActivates the climate control system
Steering-wheel mounted controls: Allow the driver to easily operate the audio system and phone interface controlsMay require additional optional equipment
Theft-deterrent unauthorized entry system: Sounds the horn and flashes the turn signals when someone attempts to open the vehicle without the proper key or remote transmitterHelps deter unauthorized entry, helping to protect your vehicleMay require additional optional equipment
USB ports: (2) Charge ports located on rear of console1
USB ports: (2) Data/charge ports located on instrument panel1
Up-level rear seat with storage package: 60/40 Full-length folding bench seatSeatback storage on left and right sideCenter fold out armrest with 2 cupholdersUnderseat storage (full cab width)
Upfitter switches: Program electrical components such as exterior lighting, snow removal equipment or other features to turn on and off at the flip of a switchAllows the driver to operate upfitter-installed equipment conveniently from inside the cabProvides 3-30 amp and 2 20 amp configurable circuits to facilitate installation of aftermarket electrical accessories by the dealer or upfitter1 at customer expenseInstallation instructions and technical assistance available at www.gmupfitter.comMay require additional optional equipment
Ventilated driver and front passenger seats: Separate buttons on the climate control panel allow you to choose from 3 levels of fan circulationIndividually controlledCooling feature includes both seatbacks and cushionsMay require additional optional equipment
Wireless Charging: Uses induction technology for select portable electronic devices1Convenient charging locationCustomers can charge their smartphones while they drive without connecting to any cablesMay require additional optional equipment
Wrapped steering wheel
10-speed automatic transmission: Tow/Haul mode reduces shift cycling for better control and improved cooling when towing or hauling heavy loadsElectronically controlled with overdriveAuto Grade Braking that automatically downshifts when needed to enable engine braking, helping to slow the vehicle on downhill grades and reduce brake wear (operates in Tow/Haul mode)May require additional optional equipment
11,350 lbs. GVWR: When properly equipped; includes weight of vehicle, passengers, cargo and equipment
220-amp alternator: May require additional optional equipment
3.42 rear axle ratio: Requires a diesel engine
4-wheel antilock disc brakes: Help reduce wheel lockup and maintain steering control during hard braking on most slippery surfacesDuraLife brake rotors feature a hardened surface to reduce corrosion and provide quieter braking with less vibration. DuraLife rotors are hardened and strengthened during the manufacturing processBrake system features a corrosion-fighting process called Ferritic Nitro-Carburizing (FNC) which can double rotor life expectancy and reduce or minimize rust over non-FNC coated rotors
6.6L Duramax Turbo-Diesel V8 engine: 470 hp [350.5 kW] at 2800 rpm975 lb-ft of torque [1322 Nm] at 1600 rpm3.42 rear axle ratioExhaust brake Engine block heaterCapped fuel fillPaired with an Allison 10-speed automatic transmissionDiesel Exhaust Fluid (DEF) fill located in fuel doorEngine after run feature for cooling performanceMay require additional optional equipment
Air filtration monitoring: Alerts the driver when the engine air filter needs replacement
Automatic locking rear differential: When the differential senses a significant difference in wheel speed, it locks to turn both rear wheels in unison for added tractionThe Eaton Locker senses a difference in wheel speed of approximately 100 rpm
Autotrac 2-speed transfer case with push button controls: 4-button control 2WD, Auto, 4WD, 4WD LO2WD High for most on-road and highway situations 4WD High for snowy or wet roads when added traction is needed 4WD Low for deep sand, mud or snow to provide maximum torque to all 4 wheels When in AUTO mode, remains in 2WD mode until the system detects wheel slippage Automatically engages 4WD until traction is regained May require additional optional equipment
Brake pad wear indicator
Capped fuel fill: Requires diesel engine or pickup bed delete
Diesel exhaust brake: Reduces the amount of conventional braking needed while towing a heavy trailer or driving downhillUses the variable vanes in the turbocharger to smoothly and quietly create additional back pressure in the engine to help slow the vehicleWorks with the transmission's Tow/Haul mode and Auto Grade Braking to help the driver maintain the desired speed even on long, steep downgradesSwitch activatedMay require additional optional equipment
Digital Variable Steering Assist: This system automatically adjusts steering based on speed, road conditions, and other inputs to help reduce driver fatigue
Engine block heater: Helps ease cold weather startsHeats the engine and engine block fluids
External auxiliary transmission oil cooler: Heavy-duty air-to-oil coolerHelps provides optimal transmission performance even when operating under a heavy load or towing a trailerMay require additional optional equipment
External engine oil cooler: Heavy-duty air-to-oil coolerHelps extend engine oil life under heavy loads
Fully boxed frame: Hydroformed front sectionHigh-strength steel
Heavy-Duty Air Filter: Thick construction helps to trap more dirt before it can enter the air intake
Heavy-duty dual batteries with 1460 cold-cranking amps: 70 Amp-hrMaintenance-free with rundown protection and retained accessory powerMay require additional optional equipment
In-Vehicle Trailering App: Checklist1Trailer maintenance remindersTrailer security alertsTrailer mileageTow/haul reminderTrailer electrical diagnosticsIncludes trailer tire pressure monitoring alert ONLY when (PTT) trailer tire pressure monitor system is factory ordered and sensors are installed
Integrated trailer brake controller: Integrated with the antilock brake system (ABS)Helps provide measured brake force signaling to electric-controlled trailer brake systemsTrailer gain and output are displayed in the Driver Information Center
Pickup bed: Roll-formed high-strength steelIncludes bed assist step
Push Button Start
Suspension Package: Designed to help maintain handling and ride quality while towing a trailer or carrying a load
ProGrade Trailering System: Hitch Guidance with Hitch ViewIn-vehicle Trailering App
SLT Convenience Package: Bucket seatsCenter consoleVentilated front seatsUSB ports1 in center consoleLED roof marker lamps Wireless Charging2Bose3 Premium Sound System with Richbass woofer
Sierra HD Pro Safety: Forward Collision Alert1Following Distance Indicator1Front Pedestrian Braking1IntelliBeamLane Departure Warning1Buckle to DriveAutomatic Emergency Braking1
Trailering Package: Trailer hitch1Trailering hitch platformIncludes a 2.5" receiver hitch (with 2" insert), 4-pin and 7-pin connectors7-wire electrical harness and 7-pin sealed connector for connecting your trailer's lights and brakes to your vehicleHitch Guidance2May require additional optional equipment
Fuel System: Direct Injection
Fuel tank capacity: 36 gal
Horsepower: 470
LED Daytime Running Lamps
Signature LED Daytime Running Lamps
6 airbags: Dual-stage frontal airbags for driver and front outboard passenger1Seat-mounted side-impact airbags for driver and front outboard passenger1Head-curtain airbags for outboard seating positions1Includes front outboard Passenger Sensing System for frontal outboard passenger airbag and illuminates a status light that indicates whether the airbag is on or off1
Buckle to Drive: Helps remind the driver to buckle their seat belt before driving by preventing the vehicle from being shifted out of PARK temporarily when the driver's seat belt is not buckledThe feature also reminds the front passenger to buckle up, if equipped
Following Distance Indicator: Displays the following time in seconds between your vehicle and a detected vehicle in front of you1Designed to help you maintain a safe following distance
Forward Collision Alert: Warns you if it detects a potential collision with a detected vehicle you're following so you can take action1Can also provide a tailgating alert if you're following a vehicle much too closely
HD Rear Vision Camera: Shows high-resolution digital image of area directly behind your vehicle while in Reverse1Can help you park or avoid vehicles and objectsYou can also display an overlay of where your vehicle is headingTailgate must be in the raised position for the HD Rear Vision Camera to operate properlyMay require additional optional equipment
Hitch Guidance: When in Reverse, displays a centered guideline on the Rear Vision Camera view1Can help you line up the hitch to your trailerWhen driving, lets you check the trailer using Rear Vision Camera view
Hitch View: Shows a close-up view of the trailer hitch1In Reverse, the view can be used to line up your hitch to your trailerWhen driving, the view can be used to check your trailer hitchShifting to Park automatically engages the Electric Parking Brake (if equipped)May require additional optional equipment
Lane Departure Warning: Alerts you when it detects that you are unintentionally drifting out of detected lane lines1System alerts do not occur if you're using your turn signal, or it detects you may be intentionally leaving your lane
OnStar Basics: Drive confidently with core OnStar services including1Remote commandsBuilt-in voice assistanceReal-time traffic and navigationAutomatic Crash Response to help if you're in need
OnStar services capable: See onstar.com for details and limitations. Services vary by model. Service plan required.
Rear Seat Belt Indicator
Seat Belt Adjustable Guide Loops: Front row only
Teen Driver: Helps encourage safe driving habits for teens by providing an in-vehicle report card1Activates certain safety systems, if equipped, when a Teen Driver-designated key fob is usedMutes the radio until the front-seat occupants fasten their seat belts
Tire Pressure Monitoring System with Tire Fill Alert: Monitors tire pressure and alerts of an under-inflated condition in one or more of the tires1Provides visual and audible alerts outside the vehicle when inflating an under inflated tire to the recommended tire pressure
Trailering Information Label: Provides max trailer ratings for tongue weight, conventional, gooseneck hitch and 5th wheel hitch
Automatic Emergency Braking: Can help you avoid or reduce the severity of a collision with a detected vehicle you're following using camera technology1Can automatically provide hard emergency braking or enhance your hard brakingWorks at speeds between 5 and 50 mph
Front Pedestrian Braking: At speeds between 5 and 50 mph, can help you avoid or reduce the severity of a collision with a pedestrian it detects directly in front of you1Provides pedestrian alerts and can automatically provide hard emergency braking or enhance driver's hard brakingLimited nighttime and low visibility performance
StabiliTrak, electronic stability control system with traction control: Automatically helps enhance control, particularly during emergency maneuvers, by adjusting the brakes and engine torque to help you stay on your intended pathActivates when vehicle sensors detect a difference between the driver's intended path and the direction the vehicle is actually travellingIncludes Traction Control that detects wheel slippage and applies brake pressure and/or reduces engine power to help the driver maintain control when accelerating on wet or snow-covered roadsIncludes Brake Assist which detects rapid brake pedal applications due to emergency braking situations and provides additional braking via the Antilock Brake System (ABS) moduleIncludes Trailer Sway ControlHill Start Assist
Max seating capacity: 6
Towing capacity: 18500 lbs
Basic: 3 Years/36,000 Miles
Corrosion: 3 Years/36,000 Miles, Rust-Through, 6 Years/100,000 Miles
Drivetrain: 5 Years/60,000 Miles, 3.0L & 6.6L Duramax Turbo-Diesel engines, and certain commercial, government, and qualified fleet vehicles: 5 years/100,000 miles
Maintenance: First Visit: 12 Months/12,000 Miles
Roadside Assistance: 5 Years/60,000 Miles, 3.0L & 6.6L Duramax Turbo-Diesel engines, and certain commercial, government, and qualified fleet vehicles: 5 years/100,000 miles
Warranty: >
Seller description
Recent Arrival! Sterling Metallic 2026 GMC Sierra 2500HD SLT Duramax 6.6L V8 Turbodiesel 10-Speed Automatic 4WD10-Way Power Driver Seat Adjuster with Lumbar, 10-Way Power Passenger Seat Adjuster with Lumbar, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 Charge-Only Rear USB Ports, 2 Charge/Data USB Ports, 2 Charge/Data USB Ports Inside Center Console, 2-Speed Active Transfer Case, 6-Speaker Audio System Feature, Bose Premium 7-Speaker Sound System, Chrome Surround Grille with Chrome Insert Bars, Deep-Tinted Glass, Driver Memory, Electric Rear-Window Defogger, Floor-Mounted Center Console, Front 40/20/40 Split-Bench Seats, Front Bucket Seats, Front Rain-Sensing Wipers, Heated Driver and Front Outboard Passenger Seats, Heated steering wheel, Keyless Open and Start, LED Cargo Area Lighting, LED Smoked Amber Roof Marker Lamps, Manual Tilt-Wheel/Telescoping Steering Column, Memory seat, OnStar Services Capable, Power driver seat, Power Front Passenger Windows with Express Up/Down, Power passenger seat, Preferred Equipment Group 4SA, Push Button Start, Rear Wheelhouse Liners, Remote Vehicle Starter System, SiriusXM with 360L Trial Subscription, SLT Convenience Package, Steering Wheel Audio Controls, Suspension Package, Unauthorized Entry Theft-Deterrent System, Ventilated Driver and Front Passenger Seats, Wireless Charging, Wireless Phone Projection.Pricing does not include tax or title. Dealer doc fee is included in the advertised price. Doc Fee $649. Price includes: $1000 - Buick & GMC Consumer Cash Program. Exp. 08/03/2026
Lee GMC Truck Center
Location: 817 Center St, Auburn, ME 04210
Phone: (120) 752-0279
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Frequently Asked Questions About the 2026 GMC Sierra HD
The average price of a used 2026 GMC Sierra HD is $69,222 based on 23,000 listings currently available nationwide. Prices range from $10,000 to $111,945 depending on mileage, condition, and location. This particular Sierra HD in Auburn, ME is listed at $78,865.
Used 2026 GMC Sierra HD vehicles on our marketplace have an average of 14,593 miles. You can compare mileage across all available units on the GMC Sierra HD listings page.
Reliability varies by model year, maintenance history, and driving conditions. We recommend checking the vehicle history report and having an independent inspection before purchase.
The 2026 GMC Sierra HD runs on Diesel. Exact fuel economy figures vary by trim level and driving conditions. Check fueleconomy.gov for EPA estimates specific to this model year.
There are 769,898 used Pickup vehicles priced under $100,000 currently listed on our marketplace. Browse all options on the Used Pickup under $100,000 page. You can also narrow your search to Used GMC vehicles under $100,000 if you prefer to stay with the GMC brand.