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  1. Baglier
  2. Used Vehicles
  3. 2025
  4. GMC
  5. Sierra 2500HD
  6. Denali Ultimate Duramax Allison Standard Bed 5th Wheel Prep

2025 GMC Sierra 2500HD Denali Ultimate Duramax Allison Standard Bed 5th Wheel Prep

  • $3,980 SAVINGS
    $88,000 INTERNET PRICE
  • Retail Price: $91,980
  • Internet Price: $88,000
  • YOU SAVE: $3,980

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Vehicle Information

VIN: 1GT4UXEY5SF281564
Stock #: G0775
Model Code: TK20743
  • Condition Used
  • Body Style Crew Cab Pickup
  • Exterior Color Onyx Black
  • Interior Color Alpine Umber
  • Mileage 3,310
  • Engine 8 Cyl - 6.6 L
  • Transmission Automatic
  • Bed length Sierra 2500 6.9" Bed
  • Fuel Type Diesel Fuel

Highlighted Features

Feature availability subject to final vehicle configuration. Please reference window sticker for more info.

Dealer Comments

Located at Baglier Buick GMC! Balance of the Factory Warranty included! This 2025 Sierra 2500 Denali Ultimate in Onyx Black with Alpine Umber interior is the top of the HD lineup. Standard bed. 5th wheel/gooseneck prep. Duramax 6.6L V8 paired with the Allison 10-speed. This is the one you buy when you're done compromising.

Why this one stands above the rest:

* 6.6L Duramax Turbo-Diesel V8: massive torque and proven pulling power.
* Allison 10-Speed Automatic: smooth, heavy-duty performance built to tow.
* 5th Wheel / Gooseneck Prep Package: factory-installed and ready to hook up.
* Denali Ultimate Interior: Alpine Umber full-grain leather with 16-way power seats and massage.
* Super HD Trailering Tech: Trailer Side Blind Zone Alert, HD Surround Vision, Bed View Camera, Hitch Guidance with Hitch View.
* 15" Head-Up Display + 12.3" Digital Cluster: fully modern command center.
* 13.4" GMC Infotainment w/ Google Built-In: wireless Apple CarPlay & Android Auto.
* Heated & Ventilated Front Seats + Heated Rear Seats: comfort in every row.
* Power Retractable Assist Steps: LED perimeter lighting included.
* 20" Ultra Bright Machined Wheels: bold stance with black inserts.
* Spray-On Bedliner + MultiPro Tailgate: built to work, finished to impress.

This isn't just a 2500. It's the Denali Ultimate---luxury-level interior, commercial-grade capability, and factory 5th wheel prep ready for serious towing.

Located at Baglier Buick GMC! Need more photos or an HD video walkaround? Just ask---we're happy to help.

We're dealing and we love trades. Financing available.

Every vehicle includes the Baglier Buyers Program:

  • FREE Lifetime State Inspections with any new or pre-owned purchase
  • FREE Multi-Point Vehicle Inspection with every service visit
  • FREE Oil Change with any new vehicle purchase
  • FREE Loaner Car Program for service needs
  • FREE Car Wash with any service or body shop visit

Call or email us today!

Eligible Benefits

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All Features

  • Assist steps, power-retractable, with LED perimeter lighting and bright accent (Not available with any other assist steps.)
  • Bed Step, Black integrated on forward portion of bed on driver and passenger side
  • Bedliner, Spray-on, Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel) (Available with Ship Thru code (TCH), not available with any other Ship Thru code.)
  • Bumper, front, body-color lower
  • Bumper, rear body-color with bumper CornerSteps
  • Cargo tie downs (12), fixed, rated at 500 lbs per corner
  • CornerStep, rear bumper
  • Door handles, chrome
  • Fog lamps, LED
  • Glass, deep-tinted
  • Grille (Signature Denali Ultimate grille in Vadar chrome with High Gloss Black surround.)
  • Headlamps, Animated LED projectors LED turn signals and Daytime Running Lamps
  • IntelliBeam, automatic high beam on/off (Included and only available with (PDI) Sierra HD Pro Safety.)
  • Lamps, cargo area cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel
  • Lamps, Smoked Amber roof marker, (LED) (Not available with (YF5) California state emissions requirements.)
  • LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob
  • Mirror caps, chrome
  • Mirrors, outside power-adjustable vertical trailering with heated and auto-dimming upper glass, (driver and passenger), lower convex mirrors, turn signal indicators, puddle lamps, (U12) perimeter lighting, auxiliary lighting, power folding/extending (extends 3.31" [84.25mm]) lighting
  • Moldings, beltline, chrome
  • Sunroof, power
  • Tailgate and bed rail protection caps, top
  • Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
  • Tailgate, GMC MultiPro Tailgate with six functional load/access features NOTE: Auto release can be disabled if ball hitch is installed. See Owner's manual for details
  • Taillamps, Animated LED Signature Tail, Stop, turn and Reverse lamps
  • Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
  • Tire, spare LT275/70R18 all-terrain, blackwall
  • Tires, LT275/65R20 all-terrain, blackwall
  • Wheelhouse liners, rear
  • Wheels, 20" (50.8 cm) Ultra-bright machined aluminum wheels with Black painted pockets
  • Winter Grille Cover
  • Wipers, front rain-sensing
  • 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 Premium Series with 12-speaker system with CenterPoint Richbass woofer and AudioPilot
  • 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
  • Floor mats, carpeted front (Includes Premium floor mats with corner applique.)
  • Floor mats, carpeted rear (Unique premium carpet. Deleted when LPO floor liners are ordered or (BKF) Premium Floor Liners are ordered.)
  • GMC Premium information Display- 13.4" diagonal Multicolor touch screen
  • Keyless Open and Start includes remote keyless entry
  • LPO, MultiPro Tailgate Audio System by Kicker
  • Multicolor 15" Diagonal Head-Up Display
  • Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
  • Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
  • Rear Camera Mirror inside rearview auto-dimming with full camera display
  • Rear Seat Reminder
  • Remote vehicle starter system
  • Seat adjuster, driver 16-way power including lumbar and massage
  • Seat adjuster, passenger 16-way power including lumbar and massage
  • Seat trim, Full Grain Leather
  • 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, (includes child seat top tether anchor)
  • 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. (IMPORTANT: The SiriusXM trial subscription is not provided on vehicles that are ordered for Fleet Daily Rental ("FDR") use. Trial subscription is subject to the SiriusXM Customer Agreement and privacy policy, visit www.siriusxm.com which includes full terms and how to cancel. All fees, content, features, and availability are subject to change. Some features require GM connected vehicle services.)
  • Steering column, manual Tilt-Wheel and telescoping
  • Steering wheel audio controls
  • Steering wheel, heated
  • Steering wheel, leather-wrapped
  • Theft-deterrent system, unauthorized entry
  • Universal Home Remote
  • USB ports, (2) charge-only, rear
  • USB Ports, 2 (first row) located on console
  • USB Ports, 2, Charge/Data ports located inside center console
  • Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
  • Window, power front, passenger express up/down
  • Window, power, rear sliding with rear defogger
  • Windows, power front, drivers express up/down
  • Windows, power rear, express down
  • Wireless Charging
  • Wireless Phone Projection for Apple Carplay and Android Auto
  • Air filter, heavy-duty
  • Air filtration monitoring
  • Alternator, 220 amp
  • Auto-locking rear differential
  • Brake lining wear indicator
  • Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
  • Capped Fuel Fill
  • Exhaust brake
  • Four wheel drive
  • Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
  • Hill Descent Control
  • In-Vehicle Trailering App, System includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder, trailer electrical diagnostics and Trailer Tire Pressure Monitor System module (Includes trailer tire pressure monitoring alert when (PTT) trailer tire pressure monitor sensors are installed.)
  • Pickup bed includes bed assist step
  • Push Button Start
  • Recovery hooks, front, Chrome (Plant installed.)
  • 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
  • 3 Years OnStar Premium Plan (OnStar plan, working electrical system, cell reception and GPS signal required. OnStar links to emergency services. Service coverage varies with conditions and location. Service availability, features and functionality vary by device and software version. Data plans provided by AT&T. See onstar.com for details and limitations.)
  • 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 (Always use seat belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner's Manual for more information.)
  • Automatic Emergency Braking (Included and only available with (PDI) Sierra HD Pro Safety.)
  • 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 (Included and only available with (PDI) Sierra HD Pro Safety.)
  • Daytime Running Lamps, LED signature lighting
  • Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)
  • Forward Collision Alert (Included and only available with (PDI) Sierra HD Pro Safety.)
  • Front and Rear Park Assist, ultrasonic
  • Front Pedestrian Braking (Included and only available with (PDI) Sierra HD Pro Safety.)
  • 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 (Included and only available with (PDI) Sierra HD Pro Safety.)
  • LED Signature DRL's
  • OnStar Basics (OnStar Fleet Basics for Fleet) Drive confidently with core OnStar services including select remote commands, built-in voice assistance, real-time traffic and navigation, and Automatic Crash Response to help if you're in need. (OnStar Basics includes select remote commands, Navigation, Voice Assistance, and Automatic Crash Response, for eligible vehicles with compatible software. For MY25 vehicles, OnStar Basics is standard for 8 years; OnStar plan, working electrical system, cell reception and GPS signal required. OnStar links to emergency services. Service coverage varies with conditions and location. Service availability, features and functionality vary by device and software version. See onstar.com for details and limitations.)
  • OnStar Services capable (See onstar.com for details and limitations. Services vary by model. Service plan 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 (does not apply to spare tire)
  • Trailer Camera Provisions and trailer viewing software
  • Trailer Side Blind Zone Alert
  • Trailer Tire Pressure Monitor Sensors includes set of 4 sensors. Sensor functionality requires (UET) In-vehicle Trailering App to be ordered with the vehicle and installed by the factory. Sensors will be shipped loose with the truck and will need to be installed on trailer by customer. System is capable of monitoring up to 6 wheels. Additional or replacement sensors are available through GM Accessories
  • Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering
  • 11
  • 350 lbs. GVWR
  • ENGINE DURAMAX 6.6L TURBO-DIESEL V8 B20-DIESEL COMPATIBLE (470 hp [350.5 kW] @ 2800 rpm 975 lb-ft of torque [1322 Nm] @ 1600 rpm) (STD)
  • Back-Up Camera
  • Heads-Up Display
  • Lane Departure Warning
  • Front Collision Mitigation
  • Front Collision Warning
  • Automatic Highbeams
  • Tow Hitch
  • Turbocharged
  • Running Boards/Side Steps
  • Keyless Start
  • Locking/Limited Slip Differential
  • Four Wheel Drive
  • Tow Hooks
  • Power Steering
  • ABS
  • 4-Wheel Disc Brakes
  • Aluminum Wheels
  • Tires - Front All-Terrain
  • Tires - Rear All-Terrain
  • Conventional Spare Tire
  • Sun/Moonroof
  • Generic Sun/Moonroof
  • Running Boards/Side Steps
  • Power Retractable Running Boards
  • Bed Liner
  • Daytime Running Lights
  • Automatic Highbeams
  • Fog Lamps
  • Heated Mirrors
  • Power Mirror(s)
  • Integrated Turn Signal Mirrors
  • Power Folding Mirrors
  • Privacy Glass
  • Intermittent Wipers
  • Variable Speed Intermittent Wipers
  • Rain Sensing Wipers
  • Integrated Tailgate Step
  • AM/FM Stereo
  • Navigation System
  • MP3 Capability
  • Bluetooth® Connection
  • Auxiliary Audio Input
  • Smart Device Integration
  • Requires Subscription
  • Satellite Radio
  • Requires Subscription
  • Premium Sound System
  • Premium Sound System
  • Bluetooth® Connection
  • Bluetooth® Connection
  • Smart Device Integration
  • WiFi Hotspot
  • Bucket Seats
  • Leather Seats
  • Rear Bench Seat
  • Power Driver Seat
  • Driver Adjustable Lumbar
  • Seat-Massage
  • Power Passenger Seat
  • Passenger Adjustable Lumbar
  • Seat-Massage
  • Heated Front Seat(s)
  • Heated Front Seat(s)
  • Cooled Front Seat(s)
  • Heated Rear Seat(s)
  • Mirror Memory
  • Seat Memory
  • Floor Mats
  • Floor Mats
  • Leather Steering Wheel
  • Heated Steering Wheel
  • Steering Wheel Audio Controls
  • Adjustable Steering Wheel
  • Heads-Up Display
  • Power Windows
  • Power Windows
  • Power Windows
  • Rear Defrost
  • Sliding Rear Window
  • Power Door Locks
  • Keyless Entry
  • Power Door Locks
  • Keyless Start
  • Remote Engine Start
  • Cruise Control
  • Adaptive Cruise Control
  • Universal Garage Door Opener
  • Security System
  • MP3 Capability
  • Auxiliary Audio Input
  • MP3 Capability
  • Auxiliary Audio Input
  • Climate Control
  • Multi-Zone A/C
  • A/C
  • Rear Defrost
  • Auto-Dimming Rearview Mirror
  • Back-Up Camera
  • Front Collision Mitigation
  • Front Collision Mitigation
  • Front Collision Warning
  • Traction Control
  • Stability Control
  • Daytime Running Lights
  • Daytime Running Lights
  • Driver Air Bag
  • Passenger Air Bag
  • Front Side Air Bag
  • Front Head Air Bag
  • Rear Head Air Bag
  • Passenger Air Bag Sensor
  • Telematics
  • Requires Subscription
  • Rear Parking Aid
  • Back-Up Camera
  • Aerial View Display System
  • Back-Up Camera
  • Front Collision Warning
  • Lane Departure Warning
  • Cross-Traffic Alert
  • Blind Spot Monitor
  • Driver Restriction Features
  • Tire Pressure Monitor
  • Telematics
  • Requires Subscription
  • Brakes
    • Brake ABS System: 4-Wheel
    • Brake Type: Pwr
    • Disc - Front (Yes or ): Yes
    • Disc - Rear (Yes or ): Yes
    • Front Brake Rotor Diam x Thickness (in): 14 x 1.6
    • Rear Brake Rotor Diam x Thickness (in): 14.1 x 1.3
  • Cargo Area Dimensions
    • Cargo Box (Area) Height (in): 21
    • Cargo Box Length : Floor (in)
    • Cargo Box Width : Floor (in)
    • Cargo Box Width : Top, Rear (in)
    • Cargo Box Width : Wheelhousings (in)
    • Cargo Volume (ft³): 69.5
  • Electrical
    • Cold Cranking Amps : 0° F (2nd)
    • Cold Cranking Amps : 0° F (Primary)
    • Maximum Alternator Capacity (amps): 220
  • Emissions
    • Tons/yr of CO2 Emissions : 15K mi/year
  • Exterior Dimensions
    • Cab to Axle (in): 42.17
    • Ground Clearance, Front (in): 10.28
    • Ground Clearance, Rear (in): 10.28
    • Height, Overall (in): 79.82
    • Length, Overall (in): 250.75
    • Wheelbase (in): 158.94
    • Width, Max w/o mirrors (in): 81.85
  • Frame
    • Frame Type: Box Ladder
  • Fuel Tank
    • Fuel Tank Capacity, Approx (gal): 36
  • Interior Dimensions
    • Front Head Room (in): 43.03
    • Front Hip Room (in): 61.18
    • Front Leg Room (in): 44.53
    • Front Shoulder Room (in): 66.02
    • Passenger Capacity: 5
    • Second Head Room (in): 40.12
    • Second Hip Room (in): 60.24
    • Second Leg Room (in): 43.4
    • Second Shoulder Room (in): 65.3
  • Steering
    • Steering Type: Pwr Recirculating Ball
    • Turning Diameter - Curb to Curb (ft): 52.7
  • Summary
    • Body Code: E63
    • Body Style: Crew Cab Pickup
    • Vehicle Name: GMC Sierra 2500HD
  • Suspension
    • Axle Ratio (:1) - Front: 3.42
    • Axle Ratio (:1) - Rear: 3.42
    • Shock Absorber Diameter - Front (mm): 51
    • Shock Absorber Diameter - Rear (mm): 51
    • Stabilizer Bar Diameter - Front (in): 1.38
    • Suspension Type - Front: Short/Long Arm w/Torsion Bar
    • Suspension Type - Rear: 2-Stage Multi-Leaf
  • Tires
    • Front Tire Order Code: QF9
    • Front Tire Size: LT275/65R20
    • Rear Tire Order Code: QF9
    • Rear Tire Size: LT275/65R20
    • Revolutions/Mile : 45 mph - Front
    • Revolutions/Mile : 45 mph - Rear
    • Revolutions/Mile : 45 mph - Spare
    • Spare Tire Order Code: ZYG
    • Spare Tire Size: LT275/70R18
  • Trailering
    • Dead Weight Hitch - Max Tongue Wt. (lbs): 500
    • Dead Weight Hitch - Max Trailer Wt. (lbs): 5000
    • Fifth Wheel Hitch - Max Tongue Wt. (lbs): 4300
    • Fifth Wheel Hitch - Max Trailer Wt. (lbs): 17200
    • Maximum Trailering Capacity (lbs): 20000
    • Wt Distributing Hitch - Max Tongue Wt. (lbs): 1850
    • Wt Distributing Hitch - Max Trailer Wt. (lbs): 18500
  • Weight Information
    • Curb Weight - Front (lbs): 4023
    • Curb Weight - Rear (lbs): 2822
    • Gross Axle Wt Rating - Front (lbs): 5600
    • Gross Axle Wt Rating - Rear (lbs): 6600
    • Gross Combined Wt Rating (lbs): 27500
    • Gross Vehicle Weight Rating Cap (lbs): 11350
  • Wheels
    • Front Wheel Material: Aluminum
    • Front Wheel Size (in): 20 x
    • Rear Wheel Material: Aluminum
    • Rear Wheel Size (in): 20 x
    • Spare Wheel Size (in): 18 x
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May not represent actual vehicle. (Options, colors, trim and body style may vary)