2026 GMC Sierra 2500 HD Pro

  • New
MSRP
$56,225
Lithia Adjustment*
-$4,725
Price
$51,500
Doc Fee
$499
Selling Price
$51,999
Purchase AllowanceDetails
-$1,000
Lithia Price
$50,999
GM Military OfferDetails
-$500
GM First Responder OfferDetails
-$500
Lithia GMC of Helena
Location Details
Call 855-917-8292
We’re here to help

    The overview

    Exterior Color
    Summit White
    Interior Color
    Jet Black, Cloth seat trim
    Transmission
    Automatic
    Drivetrain
    4WD
    Engine
    6.6L V8 Gas engine
    VIN
    1GT3ULE78TF240486
    Stock Number
    TF240486
      • 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 & 6.0L 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 & 6.0L Duramax® Turbo-Diesel engines, and certain commercial, government, and qualified fleet vehicles: 5 years/100,000 miles
      • Warranty: <<< Preliminary 2026 Warranty >>>
      • Max seating capacity: 3
      • Fuel System: Direct Injection
      • Fuel tank capacity: 36 gal
      • Horsepower: 401
      • Towing capacity: 14500 lbs
      • 2-speaker audio system:
        • Includes 2 speakers placed in the front doors
      • Bluetooth®:
        • Pair your compatible mobile phone to your vehicle's infotainment system1
        • Place 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 system
        • With streaming audio capability, you can listen to files stored on your phone or Bluetooth digital media device
      • GMC Infotainment System with color touchscreen:
        • Multi-touch display and AM/FM stereo
        • 7" diagonal color touchscreen for customizing and managing entertainment and vehicle feature settings1 on Pro 1SA
        • 8" diagonal color touchscreen for customizing and managing entertainment and vehicle feature settings1 on SLE and Elevation
        • Bluetooth®2 audio streaming for select devices
        • Apple CarPlay™ capability for compatible phones3
        • Android Auto™ capability for compatible phones4
      • 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 CarPlay™1 and Android Auto™2
      • 17" LT245/75R17E all-season, blackwall spare tire:
        • May require additional optional equipment
      • 17" LT245/75R17E all-season, blackwall tires
      • 17" machined aluminum wheels
      • Animated LED projectors headlamps with LED turn signals and Daytime Running Lamps
      • Black beltline moldings
      • Black door handles
      • Black outside power-adjustable vertical trailering mirrors with power folding/manual extending auto-dimming driver upper glass:
        • Lower convex mirrors
        • Heated upper glass
        • Integrated turn signal indicators
        • Puddle lamps
        • Perimeter lighting
        • Auxiliary lighting
        • Extends 3.31-inches
        • May require additional optional equipment
      • Cab-mounted cargo area lamps:
        • Activated by switch located on center switch bank
        • Illuminates the cargo bed area
      • Cargo bed LED lighting:
        • Provides light to find cargo in the bed
        • May require additional optional equipment
      • Cargo tie-downs:
        • 12-fixed rated at 500 lbs. per corner
      • Chrome front bumper:
        • May require additional optional equipment
      • Chrome rear bumper:
        • With integrated CornerSteps
        • May require additional optional equipment
      • CornerStep rear bumper:
        • Helps make it easier to get into and out of the pickup bed
        • Located at each end of the rear bumper
        • Textured 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
      • IntelliBeam:
        • At speeds above 25 mph, can automatically turn vehicle's high beams on and off according to surrounding traffic conditions1
      • LED tail lamps
      • Locking tailgate
      • Side Bed Step:
        • Black textured step pads help provide secure footing
        • Integrated 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
      • Spray-on bedliner:
        • Provides a Black, textured, non-skid surface that helps protect the bed and minimizes cargo shifting
        • Covers the entire bed surface below side rails, front box top rail, gauge hole plugs and tie-downs
        • Chemically bonded, the sprayed-on liner permanently bonds to the truck bed, providing a watertight seal
        • Does not include spray-on liner on tailgate due to Black composite inner panel
        • Includes GMC logo on all trims except PRO
      • Standard tailgate
      • Tailgate and bed rail protection caps
      • Tailgate with EZ Lift assist, power lock & release:
        • Hitch area lighting
        • May require additional optional equipment
      • 12-volt auxiliary front power outlet:
        • May require additional optional equipment
      • 120-volt box-mounted power outlet:
        • 3-prong auxiliary household-style outlet
        • Located in the pickup bed
        • May require additional optional equipment
      • 120-volt power outlet:
        • 3-prong auxiliary household-style outlet
        • Located on the instrument panel
        • Makes it convenient for powering laptops, phone chargers and other electronic devices
        • May require additional optional equipment
      • 3.5" diagonal monochromatic Driver Information Center
      • 4-way manual driver seat
      • 4-way manual front passenger seat
      • 40/20/40 split-bench front seat with under-seat storage:
        • Seating for up to 3
        • Driver and front passenger seatbacks recline
        • Head restraints at the outboard seating positions
        • Center seatback that doubles as a fold-down armrest with storage
      • Assist handles:
        • Front A-pillar mounted for Driver and Passenger
        • Rear B-pillar mounted
      • Compass:
        • Located in instrument cluster
      • Cruise control:
        • Maintains a selected speed while driving
        • Automatically 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 skid
        • Set and resume speed functions
        • Steering-wheel mounted controls to easily maintain and manage cruising speed
      • Inside rearview auto-dimming mirror:
        • Automatically dims the inside rearview mirror when it senses bright light from behind
        • When headlamp glare is no longer detected, the mirror returns to its normal state
      • Instrumentation:
        • 6-gauge cluster
        • Speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure
      • Manual tilt steering column:
        • Allows the steering wheel to be manually adjusted up or down
        • Provides extra comfort when entering or exiting the vehicle
        • Locking security feature
      • 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 express-up/down:
        • Quickly raises the window or lowers it with the touch of a button
        • If an obstruction is detected, the anti-pinch feature will auto-reverse
      • Power windows with front passenger express-down:
        • Quickly lowers the window with the touch of a button
        • If an obstruction is detected, the anti-pinch feature will auto-reverse
      • Rear window defogger:
        • Utilizes a warming grid to help remove fog or frost from the rear window
      • Remote Keyless Entry:
        • Allows you to lock and unlock doors of the vehicle with the key fob
        • Driver's door or all doors unlock at the touch of a button
        • Includes panic alarm button
        • Includes remote locking tailgate
        • May require additional optional equipment
      • Rubberized vinyl floor covering:
        • Provides good traction and convenient cleanup
      • Single-zone manual climate control:
        • Maintains a selected temperature
      • Steering wheel
      • USB ports:
        • (2) Data/charge ports located on instrument panel1
      • 10,250 lbs. GVWR:
        • When properly equipped; includes weight of vehicle, passengers, cargo and equipment
      • 10-speed automatic transmission:
        • Tow/Haul mode reduces shift cycling for better control and improved cooling when towing or hauling heavy loads
        • Electronically controlled with overdrive
        • Auto 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)
      • 170-amp alternator:
        • May require additional optional equipment
      • 3.73 rear axle ratio:
        • Requires a gas engine
      • 4-wheel antilock disc brakes:
        • Help reduce wheel lockup and maintain steering control during hard braking on most slippery surfaces
        • DuraLife™ 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 process
        • Brake 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 V8 Gas engine:
        • 401 hp [299 kW] @ 5200 rpm
        • 464 lb-ft of torque [629 N-m] @ 4000 rpm
        • 3.73 rear axle ratio
        • Paired with an Allison® 10-speed automatic transmission
        • Capless fuel fill
      • 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 traction
        • The Eaton® Locker senses a difference in wheel speed of approximately 100 rpm
      • Black vertical recovery hooks:
        • Two front frame-mounted1
      • Brake pad wear indicator
      • Capless fuel fill:
        • Prevents paint scratches that can result from a tethered fuel cap
        • Creates a tight seal around the fuel-pump nozzle when the nozzle is fully inserted
        • Requires gasoline engine
      • Electronic shift 2-speed transfer case with push button controls:
        • System shift smoothly between drive settings to handle a variety of road conditions
        • 2WD 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
        • May require additional optional equipment
      • Engine block heater:
        • Helps ease cold weather starts
        • Heats the engine and engine block fluids
      • External auxiliary transmission oil cooler:
        • Heavy-duty air-to-oil cooler
        • Helps provides optimal transmission performance even when operating under a heavy load or towing a trailer
        • May require additional optional equipment
      • External engine oil cooler:
        • Heavy-duty air-to-oil cooler
        • Helps extend engine oil life under heavy loads
      • Fully boxed frame:
        • Hydroformed front section
        • High-strength steel
      • Gooseneck / 5th Wheel Prep Package:
        • Hitch platform to accept Gooseneck or 5th wheel hitch
        • Hitch platform with tray to accept ball and stamped box holes with caps installed
        • Box mounted 7-pin trailer harness
        • May require additional optional equipment
      • Heavy-Duty Air Filter:
        • Thick construction helps to trap more dirt before it can enter the air intake
      • Heavy-duty 720 cold-cranking amps battery:
        • 80 Amp-hr
        • Maintenance-free with rundown protection and retained accessory power
        • May require additional optional equipment
      • Integrated trailer brake controller:
        • Integrated with the antilock brake system (ABS)
        • Helps provide measured brake force signaling to electric-controlled trailer brake systems
        • Trailer gain and output are displayed in the Driver Information Center
      • Pickup bed:
        • Roll-formed high-strength steel
        • Includes bed assist step
      • Push Button Start
      • Steering:
        • Recirculating Ball with smart flow power steering system
      • Suspension Package:
        • Designed to help maintain handling and ride quality while towing a trailer or carrying a load
      • PRO Convenience Package:
        • Rear-window defogger
        • EZ Lift power lock and release tailgate
        • Tinted glass
        • LED cargo bed lighting
        • Outside power-adjustable vertical trailering with heated upper glass mirrors (Crew Cab and Double Cab models)
      • Pro Safety Plus Package:
        • Front and Rear Park Assist1
        • Rear Cross Traffic Alert1
        • Lane Change Alert with Side Blind Zone Alert1
        • Trailer mirrors
        • May require additional optional equipment
      • Sierra HD Pro Safety:
        • Forward Collision Alert1
        • Following Distance Indicator1
        • Front Pedestrian Braking1
        • IntelliBeam
        • Lane Departure Warning1
        • Buckle to Drive
        • Automatic Emergency Braking1
      • Trailering Package:
        • Trailer hitch1
        • Trailering hitch platform
        • Includes a 2.5" receiver hitch (with 2" insert), 4-pin and 7-pin connectors
        • 7-wire electrical harness and 7-pin sealed connector for connecting your trailer's lights and brakes to your vehicle
        • Hitch Guidance2
        • May require additional optional equipment
      • LED Daytime Running Lamps
      • Signature LED Daytime Running Lamps
      • 6 airbags:
        • Dual-stage frontal airbags for driver and front outboard passenger1
        • Seat-mounted side-impact airbags for driver and front outboard passenger1
        • Head-curtain airbags for outboard seating positions1
        • Includes 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 buckled
        • The 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 you1
        • Designed 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 action1
        • Can also provide a tailgating alert if you're following a vehicle much too closely
      • Front and Rear Park Assist:
        • Provides alerts of nearby detected vehicles and objects in front of or behind your vehicle1
        • These can help you park and avoid collisions
        • May require additional optional equipment
      • HD Rear Vision Camera:
        • Shows high-resolution digital image of area directly behind your vehicle while in Reverse1
        • Can help you park or avoid vehicles and objects
        • You can also display an overlay of where your vehicle is heading
        • Tailgate must be in the raised position for the HD Rear Vision Camera to operate properly
        • May require additional optional equipment
      • Hitch Guidance:
        • When in Reverse, displays a centered guideline on the Rear Vision Camera view1
        • Can help you line up the hitch to your trailer
        • When driving, lets you check the trailer using Rear Vision Camera view
      • Lane Change Alert with Side Blind Zone Alert:
        • Provides visual side-mirror alerts when a moving vehicle is detected either quickly approaching or already in your side blind zone1
        • Can help you avoid lane change collisions
        • May require additional optional equipment
      • Lane Departure Warning:
        • Alerts you when it detects that you are unintentionally drifting out of detected lane lines1
        • System 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 including1
          • Remote commands
          • Built-in voice assistance
          • Real-time traffic and navigation
          • Automatic Crash Response
      • OnStar® services capable:
        • See onstar.com for details and limitations. Services vary by model. Service plan required.
      • Rear Cross Traffic Alert:
        • When in Reverse, warns you of detected vehicles crossing behind you1
        • May require additional optional equipment
      • Teen Driver:
        • Helps encourage safe driving habits for teens by providing an in-vehicle report card1
        • Activates certain safety systems, if equipped, when a Teen Driver-designated key fob is used
        • Mutes 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 tires1
        • Provides 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 technology1
        • Can automatically provide hard emergency braking or enhance your hard braking
        • Works 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 you1
        • Provides pedestrian alerts and can automatically provide hard emergency braking or enhance driver's hard braking
        • Limited 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 path
        • Activates when vehicle sensors detect a difference between the driver's intended path and the direction the vehicle is actually travelling
        • Includes 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 roads
        • Includes Brake Assist which detects rapid brake pedal applications due to emergency braking situations and provides additional braking via the Antilock Brake System (ABS) module
        • Includes Trailer Sway Control
        • Hill Start Assist
      Navigation, WiFi Hotspot, Keyless Start, Onboard Communications System, Running Boards, Back-Up Camera, 4WD, Aluminum Wheels, WHEELS, 17" (43.2 CM) MACHINED ALUMIN... Pro trim, Summit White exterior and Jet Black interior. CLICK ME!

      KEY FEATURES INCLUDE
      Navigation, Back-Up Camera, Running Boards, Onboard Communications System, Trailer Hitch, Keyless Start, WiFi Hotspot. Keyless Entry, Electronic Stability Control, 4-Wheel ABS, Vinyl Seats, 4-Wheel Disc Brakes.

      OPTION PACKAGES
      1SA PRO SAFETY PLUS PACKAGE includes (UD5) Front and Rear Park Assist, (UFG) Rear Cross Traffic Alert, (UKC) Lane Change Alert with Side Blind Zone Alert and (DWI) trailer mirrors, CONVENIENCE PACKAGE includes (QT5) EZ Lift power lock and release tailgate, (AKO) tinted glass, (UF2) LED cargo bed lighting and (C49) rear-window defogger, MIRRORS, OUTSIDE POWER-ADJUSTABLE VERTICAL TRAILERING with heated and auto-dimming upper glass, lower convex mirrors, turn signal indicators, puddle lamps, (U12) perimeter lighting, auxiliary lighting, power folding/manual extending (extends 3.31" [84.25mm]), Black Includes (DD8) auto-dimming rearview mirror. WHEELS, 17" (43.2 CM) MACHINED ALUMINUM, GLASS, DEEP-TINTED, AUDIO SYSTEM, GMC INFOTAINMENT SYSTEM WITH 7" DIAGONAL COLOR TOUCH-SCREEN AM/FM stereo with seek-and-scan and digital clock, includes Bluetooth® streaming audio for music and select phones; featuring wireless Apple CarPlay® and Android Auto® capable (STD), ENGINE, 6.6L V8 with Direct Injection and Variable Valve Timing, gasoline, (401 hp [299 kW] @ 5200 rpm, 464 lb-ft of torque [629 N-m] @ 4000 rpm) (STD), TRANSMISSION, 10-SPEED AUTOMATIC (STD). GMC Pro with Summit White exterior and Jet Black interior features a 8 Cylinder Engine with 401 HP at 5200 RPM*.

      WHO WE ARE
      At Chevrolet GMC of Helena, we are local people helping local people find the car, truck or SUV that meets their needs and at a fair price. In fact, it is our promise that if you find a lower advertised price on a comparable vehicle in the 4 state area we will refund you the difference. Our customers are very important to us and it is our goal that they be 100% satisfied when doing business with us from the sales process to servicing their vehicle and doing right the first time.

      Price does not include title and license. Prices include $499 dealer doc fee.

      Peace of mind

      A name you can trust

      Lithia GMC of Helena is dedicated to your satisfaction before, during, and after your purchase. We'll go the extra mile to take care of you.
      More about us

      KBB.com Consumer Reviews

      Kelley Blue Book Logo0.0out of 5 overall
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          Disclaimer: The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.

          1Dealer Discount applied to everyone