2026 Chevrolet Silverado 1500 Custom Trail Boss

  • New
  • Diesel
MSRP
$60,970
Dealer Discount
-$3,767
Bonus CashDetails
-$750
Customer CashDetails
-$1,250
Featured Price
$55,203
Costco Executive Member IncentiveDetails
-$1,250
GM Military OfferDetails
-$500
Costco Non-Executive Member IncentiveDetails
-$1,000
Value Your Trade
O'Neill's Chevrolet
Location Details
Call 860-404-6129
We’re here to help

    The overview

    Exterior Color
    Black
    Interior Color
    Jet Black, Cloth seat trim
    Fuel Economy
    21/24 MPG City/Hwy
    Transmission
    Automatic
    Drivetrain
    4WD
    Engine
    3.0L Duramax® Turbo Diesel engine
    VIN
    3GCUKCE84TG266665
    Stock Number
    T26122
    • 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, Silverado TurboMaxTM engines, 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, Silverado TurboMaxTM engines, 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: 6
    • Fuel System: Direct Injection
    • Fuel tank capacity: 24 gal
    • Horsepower: 305
    • Towing capacity: 9000 lbs
    • 6-speaker audio system:
      • Speakers are positioned throughout the cabin for outstanding sound quality and an enjoyable listening experience
    • 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
    • Chevrolet Infotainment 3 System with 7" diagonal color touchscreen:
      • 7" diagonal color touchscreen1
      • Bluetooth®2 audio streaming for 2 active devices for compatible phones
      • Voice command pass-through to phone for compatible phones
      • Wireless Apple CarPlay™ capability for compatible phones3
      • Wireless Android Auto™ capability for compatible phones4
      • Use, control and manage select smartphone apps through the Infotainment system
    • SiriusXM Trial Subscription:
      • With your trial subscription, get access to all of your favorite entertainment from SiriusXM to enjoy in your vehicle and on the SiriusXM app - from ad-free music, talk and sports, to comedy, news, podcasts and more1
      • Enjoy channels curated by DJs, personalities and tastemakers for a listening experience you can't live without
      • Plus, take the full SiriusXM experience with you everywhere you go with the SiriusXM app - at home, on your phone or connected devices, and unlock other exclusives that bring you even closer to your favorite stars, artists, creators, hosts and athletes
    • Wi-Fi® Hotspot capable:
      • Terms and limitations apply. See onstar.com or dealer for details.
      • May require additional optional equipment
    • Wireless Apple CarPlay/Wireless Android Auto capability for compatible phones:
      • Apple CarPlay vehicle user interface is a product of Apple and its terms and privacy statements apply. Requires compatible iPhone and data plan rates apply. Apple CarPlay is a trademark of Apple Inc. Siri, iPhone and Apple Music are trademarks for Apple Inc, registered in the U.S. and other countries.
      • Vehicle user interface is a product of Google and its terms and privacy statements apply. To use Android Auto on your car display, you'll need an Android phone running Android 6 or higher, an active data plan, and the Android Auto app. Google, Android and Android Auto are trademarks of Google LLC.
      • May require additional optional equipment
    • 17" 265/70R17SL all-season, blackwall spare tire:
      • May require additional optional equipment
    • 17" full-size spare steel wheel with Black finish:
      • May require additional optional equipment
    • 20" High gloss Black painted aluminum wheels:
      • May require additional optional equipment
    • 20" LT265/60R20 MT Goodyear® Wrangler Territory® blackwall tires:
      • Aggressive tread may result in a higher level of noise while driving
      • Routine tire rotations are strongly recommended
      • May require additional optional equipment
    • 4" Black round assist steps:
      • Steps make it easier to get in and out of your truck
      • Textured step pads help provide secure footing
      • Black powder-coat finish
      • May require additional optional equipment
    • Black door handles
    • Body-color front bumper:
      • Body-color on Custom, RST and High Country models
      • High gloss Black on Custom Trail Boss, LT Trail Boss and ZR2 models
    • Body-color rear bumper:
      • With integrated CornerSteps
      • Body-color on Custom, RST and High Country models
      • High gloss Black on Custom Trail Boss, LT Trail Boss and ZR2 models
    • Cab-mounted cargo area lamps:
      • With switch in switch bank left of the steering wheel
      • Illuminates the cargo bed area
      • LED lighting on Crew Cab and Double Cab models, incandescent on Regular Cab models
    • Cargo bed LED lighting:
      • Provides light to find cargo in the bed
      • Rear pillar lamps
    • Cargo tie-downs:
      • 12-fixed rated at 500 lbs. per corner
    • Chevytec spray-on bedliner:
      • Provides a Black, textured, non-skid surface that helps protect the bed and minimizes cargo shifting
      • Covers the bed interior surface below side rails, front bed top rail, gauge hole plugs and tie-downs
      • Chemically bonded, the sprayed-on liner permanently bonds to the truck bed, providing a watertight seal
      • Includes Chevrolet logo
      • High Country models include High Country logo
      • 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
      • May require additional optional equipment
    • Front license plate bracket:
      • Front bracket is included if displaying a front license plate is required in your state
    • Heated power outside mirrors:
      • Power adjustable, manual folding
      • May 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
    • Rear wheelhouse liners:
      • Help protect your truck's rear wheelhouse area from damage caused by dirt, rocks, mud, road salt and the weather
      • May require additional optional equipment
    • Spare tire carrier lock:
      • Helps keep spare tire secure
      • Utilizes the same key as the door and ignition
    • Standard tailgate
    • Tailgate and bed rail protection caps
    • Tailgate with EZ Lift assist, power lock & release:
      • Hitch area lighting
      • May require additional optional equipment
    • Taillamps:
      • Incandescent tail, stop and turn signal lights
    • 10-way power driver seat with power lumbar:
      • Moves the seat forward and back, and up and down
      • Tilt the seat cushion and seatbacks
    • 12-volt auxiliary front power outlet
    • 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 front passenger seat:
      • Can be positioned forward or back and up or down
    • 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
    • 60/40 split-folding rear bench seat:
      • Includes child seat top tether anchor
      • Can fold one or both sides up
    • Assist handles:
      • Front A-pillar mounted for Driver and Passenger
      • Rear B-pillar mounted
    • Carpeted floor covering:
      • Color-keyed to match the interior
    • Compass:
      • Located in instrument cluster
      • May require additional optional equipment
    • 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
      • May require additional optional equipment
    • Front rubberized-vinyl floor mats:
      • Helps protect your interior from road debris and the elements
      • May require additional optional equipment
    • Inside rearview manual day/night mirror:
      • Adjust the tilt of the mirror to help reduce glare during nighttime driving
    • 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:
      • Programmable
      • 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
    • Power windows:
      • Driver with express-up/down
    • Power windows:
      • Front passenger with express down
      • May require additional optional equipment
    • Power windows with rear express-down
    • Rear air vents:
      • Provides cabin comfort for rear occupants
    • Rear rubberized-vinyl floor mats:
      • Helps protect your interior from road debris and the elements
      • May require additional optional equipment
    • Rear window defogger:
      • Helps to keep your rear view clear of fog or frost
      • Utilizes a warming grid to help remove fog or frost from the rear window
      • May require additional optional equipment
    • 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
    • Remote Start:
      • Start your vehicle remotely and step into a comfortably warmed or cooled vehicle, depending on the weather and your preset preferences
      • Locks doors and turns on parking lamps while the engine is running
      • Activates the climate control system
    • Single-zone climate control:
      • Maintains a selected temperature
      • Manual
    • Steering column lock:
      • Most vehicles built on or after 4-4-2022 are not equipped with Steering Column Lock. Contact a dealer for details on a specific vehicle
    • Steering wheel
    • 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 transmitter
      • Helps deter unauthorized entry, helping to protect your vehicle
    • USB ports:
      • (2) Charge ports located on rear of console1
      • May require additional optional equipment
    • USB ports:
      • (2) Data/charge ports located on instrument panel1
    • 10-speed automatic transmission:
      • Electronically controlled transmission with overdrive and Driver Shift Control
      • Tow/Haul mode reduces shift cycling for better control and improved cooling when towing or hauling heavy loads
      • Powertrain Grade Braking
        • Automatically uses the engine and transmission to slow the truck to maintain desired speeds when driving downhill
        • Reduces brake wear and increases vehicle control
      • Cruise Grade Braking
        • Downshifts automatically to slow the truck as it drives downhill if it exceeds the cruise set speed by a certain amount
      • May require additional optional equipment
    • 2-speed Autotrac Transfer Case:
      • 2WD HI mode
        • Vehicle operates in 2-wheel drive
        • In this mode the transfer case & front driveline hardware are disengaged to improve fuel economy
        • Suitable for routine driving on all road surfaces
      • 4WD Auto mode
        • 4WD Auto enables the transfer-case to provide the performance benefits of a full time active AWD system
        • The 4WD Auto controls automatically adjust torque in response to parameters such as driver inputs, wheel slip control, vehicle dynamic state (understeer/oversteer)
        • Ideal for wet or wintry conditions, but can be used on any road surface. Suitable for light off road usage
      • 4WD HI mode
        • Transfer case engages front driveline and power is transferred to both the front & rear axles
        • In 4WD HI the transfer case clutch maintains higher preemptive torque levels for increased traction vs 4WD Auto
        • Suitable for use on slippery road surfaces or off-road conditions such as deep sand, snow or rough terrain
      • 4WD LO mode
        • In 4WD Low the transfer case clutch maintains a high preemptive coupling torque to maximize traction and improve wheel control when climbing or descending steep grades or obstacles
        • Suitable for off road usage, steep terrain, deep snow or sand
        • Ideal for off road driving to maximize low speed traction and increase control on steep grades
      • Neutral
        • ONLY used for towing vehicle (Dinghy tow capability)- allows vehicle to roll freely
      • May require additional optional equipment
    • 220-amp alternator:
      • May require additional optional equipment
    • 3.0L Duramax® Turbo Diesel engine:
      • 305 hp [227 kW] @ 3750 rpm
      • 495 lb-ft of torque [671 Nm] @ 2750 rpm
      • Paired with a 10-speed automatic transmission
      • May require additional optional equipment
    • 3.23 rear axle ratio:
      • May require additional optional equipment
    • 4-wheel antilock disc brakes:
      • Help reduce wheel lockup and maintain steering control during hard braking on most slippery surfaces
      • Duralife brake rotors have better resistance to corrosion to increase rotor life, minimize brake pulsation, and improve aesthetic appearance
      • Brake system features a corrosion-fighting process called "Ferritic Nitro Carburizing" which can double rotor life expectancy and reduce or minimize rust
    • 7,200 lbs. GVWR:
      • When properly equipped; includes weight of vehicle, passengers, cargo and equipment
      • May require additional optional equipment
    • Automatic Stop/Start:
      • At complete stops, when drivers keep their foot on the brake pedal, and under certain conditions, the engine shuts off
      • When drivers remove their foot from the brake, the engine automatically restarts
      • Under certain circumstances, the engine will not shut off at a complete stop
    • 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
      • May require additional optional equipment
    • 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
    • Dual-outlet exhaust:
      • Polished outlets
      • Integrated into rear bumper
      • Aluminized stainless-steel muffler and tailpipes
      • May require additional optional equipment
    • Durabed:
      • Roll-formed high-strength steel
    • Electric Power Steering:
      • Electric, rack-mounted with variable assist
      • Increases or decreases the amount of assist depending on the steering wheel angle
      • The system delivers great on-center precision and confident performance at higher speeds
      • Steering assist is greater during low-speed maneuvers, such as parking
    • Engine block heater:
      • Helps ease cold weather starts
      • Heats the engine and engine block fluids
    • Fully boxed frame:
      • Hydroformed front section
      • High-strength steel
    • Heavy-Duty Air Filter:
      • Thick construction helps to trap more dirt before it can enter the air intake
      • May require additional optional equipment
    • Heavy-duty 850 cold-cranking amps battery:
      • 95 Amp-hr
      • Maintenance-free with rundown protection and retained accessory power
      • May require additional optional equipment
    • Hill Descent Control:
      • Uses antilock braking to help provide a smooth, controlled descent
      • Helps driver maintain control of the vehicle without depressing the brake pedal
      • Activates by pushing a button on the instrument panel
      • 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
      • May require additional optional equipment
    • Performance Red recovery hooks:
      • Two front frame-mounted1
      • May require additional optional equipment
    • Push Button Start
    • Skid plates:
      • Help protect the front underbody, oil pan, differential case and transfer case
      • May require additional optional equipment
    • Z71 Suspension with 2" factory lift:
      • Rancho monotube shocks
      • Provides more ground clearance
      • Improved approach and departure angles
    • Chevy Safety Assist:
      • Automatic Emergency Braking1
      • Forward Collision Alert1
      • Front Pedestrian Braking1
      • Following Distance Indicator1
      • Lane Keep Assist with Lane Departure Warning1
      • IntelliBeam
    • Custom Convenience Package:
      • Remote Start
      • Content theft alarm
      • Rear-window defogger
      • LED cargo bed lighting
      • EZ Lift power lock and release tailgate
      • May require additional optional equipment
    • Dark Appearance Package:
      • Black Badging
      • Black Decals
      • Black Exhaust Tips
    • Trailering Package:
      • Trailer hitch1
      • Trailering hitch platform
      • Includes a 2" receiver hitch, 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
    • Daytime Running Lamps:
      • Includes automatic exterior lamp control
    • 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
    • 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
    • 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
      • May require additional optional equipment
    • Lane Keep Assist with Lane Departure Warning:
      • Uses a brief steering wheel turn to alert you when it detects you are unintentionally drifting out of your lane lines1
      • System alerts do not occur if you're using your turn signal, or it detects you may be intentionally leaving your lane
      • You may receive additional Lane Departure Warning alerts if needed
    • 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 Seat Belt Indicator warning
    • Rear Seat Reminder:
      • Helps to remind the driver to check the back seat(s) before leaving the vehicle1
      • Activates when rear doors are opened and closed up to 10 minutes before or anytime while your vehicle is on
      • Under certain conditions, once the vehicle is switched off, designed to sound audible chimes and display a visual message within the driver display
      • Activates only once each time the vehicle is turned on and off, and would require re-activation on a second trip
    • 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 the pressure in each tire and alerts you if there is a low-pressure 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
      • Properly inflate tires to help optimize your vehicle's ride, handling and efficiency
    • 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 that senses how hard and fast a driver hits the brake pedal and gives extra braking assistance, if required
      • Includes Trailer Sway Control
      • Hill Start Assist
    2026 Chevrolet Silverado 1500 Custom Trail Boss 4WD

    10-Speed Automatic, 4WD, Jet Black Cloth, Black Chrome Exhaust Tip, Chevytec Spray-on Black Bedliner, Custom Convenience Package, Dark Appearance Package, Electric Rear-Window Defogger, EZ Lift Power Lock and Release Tailgate, Front Frame-Mounted Black Recovery Hooks, Hitch Guidance, LED Cargo Area Lighting, Remote Vehicle Starter System, Single Outlet Exhaust, Theft Deterrent System (unauthorized Entry), Trailering Package.

    LOW SUBURBAN OVERHEAD= LOW SUBURBAN PRICING! Don't pay an over inflated dealer conveyance fee. Save at Sullivan Automotive with low $479 dealer conveyance fee. Not responsible for typographical errors. Residency restrictions apply. Price includes: $1250 - Chevrolet Consumer Cash Program. Exp. 04/30/2026 $1250 - GM Costco Executive Member Private Offer . Exp. 04/30/2026 $500 - GM First Responder Cash Allowance Program. Exp. 01/04/2027 $500 - GM Rewards Card Sales Sign Up and Spend Offer. Exp. 06/30/2026 $750 - Chevrolet Bonus Cash. Exp. 04/30/2026

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    O'Neill's Chevrolet 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 Logo3.8out of 5 overall
    • 5.0

      Love it

      by Ash on Wednesday, October 20, 2021

      I’ve owned 3 Silverado’s and I love them. I’ve had a 2000, 2005, and now my 2021. So far I’ve loved everything about the truck. I’ve had 0 issues out of the truck.…
    • 2.0

      Lemon

      by snowflurry on Tuesday, June 16, 2020

      2nd day of owning,battery dead.Said cuz I left trailer plugged in.7th day battery dead and engine light on.Service checked and found no issue.On way home radio comes on and off,auto stop not working,skipping badly.They replaced a burnt wire.Back at shop now for 9 days ,found nothing wrong.Between wife and I have had chevys for 40 years all high end.This will be 17 days in shop out of owning it for 35.....sick about it.…
    • 5.0

      Major improvements for 2019!

      by Horsacourse on Monday, July 29, 2019

      I traded up from a 2017 (which was already a great truck!) to a 2019 and wow what an improvement! I have the 5.3 with 8 speed tranny, which is smooth shifting, super quiet ride, etc, etc. Chevy as the controls and buttons all figured out nicely for easy of use. The backseat of this crew cab is even bigger than the previous model; its so big the kids can almost play football back there. Definitely another great value from Chevy. Minor irksome points include the goofy tilt/telescoping steering wheel. The previous model had a simply stalk that allowed easy up/down but the 2019 uses a goofball 'Japanese style' system, which is ery annoying and cumbersome to use. Also missing the ashtray (not for smoking but for storing small items like trailer keys, chapstick, and stuff). Also, they took away the third cup holder in the front/center, which is also annoying since I always have two different drinks while my passenger also has her own. But everything else is awesome and absolutely love this truck!…
    Based on 170 consumer ratings for 2019–2026 models. Privacy