New
2025
GMC
Sierra 2500 HD
AT4
VIN
1GT4UPEY7SF118186
Stock Number
B24432
- MSRP $87,835
- Castle Sale Price $81,689
- Savings $6,146
See Important Disclosures Here
New 2025 GMC Sierra 2500 HD AT4
Gallery
Dealership Photos
Manufacturer Photos
May not represent actual vehicle (options, colors, trim and body style may vary).
Current Offers
- MSRP $87,835
- Castle Discount 1- $6,146
- Castle Sale Price $81,689
- Savings $6,146
Other Offers You May Qualify For
- - $500GM Military Offer224-16-14: GM Military Offer
- - $500GM First Responder Offer324-17-12: GM First Responder Offer
Available Specials
- 1 Year/12,000 Mile Maintenance 4INCLUDED
- 3.9% APR for 48 Months for Well-Qualified Buyers When Financed w/ GM Financial 524-40G-15: For Well-Qualified Buyers When Financed w/ GM Financial
Click here for more offer information
1Castle discount is available to everyone
2Eligible military personnel includes Active Duty members, Reservists, National Guard members, Veterans and Retirees of the U.S. Army, Navy, Air Force, Marine Corps and Coast Guard. Eligible participants are able to sponsor their spouse. At participating dealers only. Visit gmmilitaryappreciation.com for program eligibility details and for a list of eligible vehicles. Not available with some other offers. Must provide authorization number to participating dealer prior to or at time of vehicle delivery to receive offer. Must take new retail delivery by 01/02/2025.
3Must be a current Firefighter, Police, EMT/Paramedic, or 911 Dispatcher. First Responders employed by federal, state or municipal governments may be subject to restrictions that limit their ability to accept this offer. Accordingly, this offer is void unless permitted by applicable federal, state and municipal laws, regulations, rules, ordinances, policies, codes of conduct, and other directives or standards regarding ethics and gift acceptance by the applicable federal, state or municipal employees. By accepting this offer, you verify that doing so complies with all laws, regulations, policies or other restrictions regarding ethics or gift acceptance that apply to you. Eligible participants are able to sponsor their spouse. At participating dealers only. Visit gmfirstresponderappreciation.com for program eligibility details and for a list of eligible vehicles. Not available with some other offers. Must provide authorization number to participating dealer prior to or at time of vehicle delivery to receive offer. Must take new retail delivery by 01/02/2025.
4See Dealer For Details
53.9% APR for 48 months for well-qualified buyers when financed w/GM Financial. Monthly payment is $22.53 for every $1000 you finance. Average example down payment is 10.0%. Not available with leases and some other offers. Must take new retail delivery by 12/02/2024.
Specifications
- Stock Number B24432
- Exterior Onyx Black
- Interior Jet Black With Kalahari Accents Perforated Front Leather Seat Trim
- Drive Wheels 4WD
-
Body Description Crew Cab
- Engine 6.6L Duramax Turbo-Diesel V8 engine
- Transmission Automatic
- VIN 1GT4UPEY7SF118186
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Vehicle At A Glance
- Fuel Economy * N/A city / N/A hwy
- Mileage 5 MILES
- Transmission 10-Speed A/T
- Exterior Color Onyx Black
- Interior Color Jet Black With Kalahari Accents Perforated Front Leather Seat Trim
- Engine Data 6.6L Duramax Turbo-Diesel V8 engine
Vehicle Description
$6,146 off MSRP!
2025 GMC Sierra 2500HD AT4 Onyx Black AT4 10-Speed Automatic 4D Crew Cab Duramax 6.6L V8 Turbodiesel 4WD
SHOP 100% ONLINE! EXPERIENCE THE CASTLE DIFFERENCE! Free Loaner Vehicles, 72 Hour Love it or Exchange it Policy, Free Vehicle Delivery Service within 50 miles, Ship anywhere in the US, Hassle-Free Online Purchase Experience. SHOP EASY, DRIVE HAPPY! Price does not include tax, title, doc fee of $347.26 or Dealer Added accessories such as LoJack GPS and Security System..
AT4 Preferred Package (LED Smoked Amber Roof Marker Lamps, Power Sliding Rear Window w/Defogger, and Universal Home Remote), AT4 Premium Plus Package (Off-Road High Clearance Step (LPO) and Power Sunroof), Gooseneck/5th Wheel Prep Package, Preferred Equipment Group 4SB (120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 Charge-Only Rear USB Ports, 2 Charge/Data USB Ports Inside Center Console, 2 USB Ports, 2-Speed Active Transfer Case, Bed View Camera w/2 Trailer Camera Provisions, Bose Premium 7-Speaker Sound System, Deep-Tinted Glass, Electric Rear-Window Defogger, Floor-Mounted Center Console, Front Prem Floor Liners w/Removable Carpet Insert, Front Rain-Sensing Wipers, Gloss Black Header Grille & Grille Insert Bars, HD Surround Vision, Heated 2nd Row Outboard Seats, Heated Driver & Front Outboard Passenger Seats, Keyless Open & Start, LED Cargo Area Lighting, Manual Tilt-Wheel/Telescoping Steering Column, OnStar Services Capable, Power Front Passenger Windows w/Express Up/Down, Push Button Start, Rear Cross Traffic Alert, Rear Prem Floor Liners w/Removable Carpet Insert, Rear Wheelhouse Liners, Remote Vehicle Starter System, Safety Alert Seat, SiriusXM w/360L Trial Subscription, Spray-On Pickup Bedliner w/GMC Logo, Steering Wheel Audio Controls, Trailer Cam Provisions & Trailer Viewing Software, Trailer Side Blind Zone Alert, Ultrasonic Front & Rear Park Assist, Unauthorized Entry Theft-Deterrent System, Ventilated Driver & Front Passenger Seats, Wireless Charging, and Wireless Phone Projection), Snow Plow Prep/Camper Package (220-Amp Alternator), Technology Package (Inside Rearview Auto-Dimming Rear Camera Mirror and Multicolor 15 Diagonal Head-Up Display), X31 Off-Road Package (Hill Descent Control), 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather, 10-Way Power Driver Seat Adjuster w/Lumbar, 10-Way Power Passenger Seat Adjuster w/Lumbar, 3.42 Axle Ratio, 3.73 Rear Axle Ratio, 4-Wheel Disc Brakes, 7 Speakers, ABS brakes, Air Conditioning, Alloy wheels, AM/FM radio: SiriusXM with 360L, Apple CarPlay/Android Auto, Auto High-beam Headlights, Auto-dimming door mirrors, Auto-dimming Rear-View mirror, Automatic Emergency Braking, Automatic temperature control, Brake assist, Buckle to Drive, Bumpers: body-color, Compass, Delay-off headlights, Driver door bin, Driver Memory, Driver vanity mirror, Dual 220-Amps Primary/170-Amps Aux Alternators, Dual front impact airbags, Dual front side impact airbags, Electronic Stability Control, Emergency communication system, Engine Block Heater, Exhaust Brake, Following Distance Indicator, Forward Collision Alert, Front anti-roll bar, Front Bucket Seats, Front Center Armrest, Front dual zone A/C, Front fog lights, Front License Plate Kit, Front Pedestrian Braking, Front reading lights, Front wheel independent suspension, Fully automatic headlights, GMC MultiPro Tailgate Step Lights (LPO), Heated door mirrors, Heated front seats, Heated rear seats, Heated steering wheel, Heavy-Duty 80 Amp Battery, High Idle Switch, Hitch Guidance w/Hitch View, Illuminated entry, In-Vehicle Trailering System App, IntelliBeam Automatic High Beam On/Off, Lane Departure Warning System, Low tire pressure warning, Memory seat, Occupant sensing airbag, Off-Road Suspension, Outside temperature display, Overhead airbag, Overhead console, Panic alarm, Passenger door bin, Passenger vanity mirror, Perforated Leather-Appointed Fro.
Specifications
Exterior
- 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
- Tailgate with EZ Lift assist, power lock & release, Hitch area lighting May require additional optional equipment
- Deep-tinted glass, Provides added protection from sun and glare
- Body-color door handles
- 20" high gloss Black aluminum wheels
- Black beltline moldings
- Spare tire carrier lock, Helps keep spare tire secure
- Cab-mounted cargo area lamps, Activated by switch located on center switch bank Illuminates the cargo bed area
- 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
- 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
- IntelliBeam, At speeds above 25 mph, can automatically turn vehicle's high beams on and off according to surrounding traffic conditions
- Cargo bed LED lighting, Provides light to find cargo in the bed May require additional optional equipment
- 18" LT275/70R18 all-terrain, blackwall spare tire, May require additional optional equipment
- 20" LT275/65R20 all-terrain, blackwall tires
- LED fog lamps
- Body-color front bumper
- Cargo tie-downs, 12-fixed rated at 500 lbs. per corner
- Animated LED Signature Tail lamps with Stop, turn and Reverse lamps, LED taillamps with LED stop lights and animation
- Body-color rear bumper, With integrated CornerSteps
- Animated LED projectors headlamps with LED turn signals and Daytime Running Lamps
- Rainsense automatic wipers, When turned on, will automatically clear the windshield when sensors detect varying degrees of precipitation on the windshield
- 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
- High gloss Black mirror caps
- GMC MultiPro Tailgate, Six function tailgate designed to help improve loading, unloading and accessing the cargo box Hitch area lighting Power lock and release May require additional optional equipment
- Tailgate and bed rail protection caps
- Outside power-adjustable vertical trailering mirrors with power folding/extending auto-dimming driver and passenger upper glass, Chrome mirror caps AT4 and AT4X features high gloss Black mirror caps Power folding/extending Lower convex mirrors Heated upper glass Integrated turn signal indicators Puddle lamps Perimeter lighting Auxiliary lighting Extends 3.31-inches
- Winter Grille Cover, May require additional optional equipment
- Off-Road High Clearance Steps, Steps make it easier to get in and out of your truck Textured step pads help provide secure footing May require additional optional equipment
- Power sunroof, Opens over the first row at the push of a button Retracts into the roof Offers tilt and slide features with express-open and -close May require additional optional equipment
- Front license plate bracket, Front bracket is included if displaying a front license plate is required in your state
- GMC MultiPro tailgate Step Lights, May require additional optional equipment
- Smoked Amber LED roof marker lamps, Roof-mounted lamps near the front of the cab
Interior
- USB ports, (2) Data/charge ports located inside center console¹
- 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
- 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 convenience Lockout protection helps you avoid locking keys in the vehicle
- Ventilated driver and front passenger seats, Separate buttons on the climate control panel allow you to choose from 3 levels of fan circulation Individually controlled Cooling feature includes both seatbacks and cushions May require additional optional equipment
- Rear window defogger, Utilizes a warming grid to help remove fog or frost from the rear window
- Premium front floor liners with removable carpet insert
- 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
- Wireless Charging, Uses induction technology for select portable electronic devices¹ Convenient charging location Customers can charge their smartphones while they drive without connecting to any cables May require additional optional equipment
- Manual tilt and telescoping steering column, Allows the driver to adjust the steering wheel up or down, and the steering column forward or back May require additional optional equipment
- Front center console, Includes reconfigurable feature with cupholders, cell phone storage, power cord management and file holder capacity May require additional optional equipment
- Power windows with driver and front passenger express-up/down, Quickly raises the window or lowers it with the touch of a button If obstruction is detected, the anti-pinch feature will auto-reverse
- Steering-wheel mounted controls, Allow the driver to easily operate the audio system and phone interface controls May require additional optional equipment
- Premium rear floor liners with removable carpet insert
- Carpeted floor covering, Color-keyed to match the interior
- 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
- USB ports, (2) First row, located on console¹
- USB ports, (2) Charge ports located on rear of console¹
- Assist handles, Front A-pillar mounted for Driver and Passenger Rear B-pillar mounted
- Front bucket seats, May require additional optional equipment
- 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
- Adaptive Cruise Control, Automatically follows a detected vehicle ahead at a driver-selected following gap¹ If no vehicle is detected in your path, works like regular cruise control You can always override the feature and take control Adaptive Cruise Control is compatible with Trailering. It is important to ensure your trailer has functioning brakes while trailering with heavier loads. Read your Owner's Manual to review Trailer Brake requirements and to learn more about the limitations of this system.
- Compass, Located in instrument cluster
- 10-way power driver seat with power lumbar, Includes 8-way power driver seat Includes a 2-way power lumbar control
- 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)
- 10-way power front passenger seat, Includes 8-way power front passenger seat Includes a 2-way power lumbar control
- Up-level rear seat with storage package, 60/40 Full-length folding bench seat Seatback storage on left and right side Center fold out armrest with 2 cupholders Underseat storage (full cab width)
- Heated steering wheel, With the press of a button the steering wheel quickly heats up to provide additional comfort on a cold day May 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 transmitter Helps deter unauthorized entry, helping to protect your vehicle May require additional optional equipment
- Dual-zone automatic climate control, Automatically maintains the selected temperatures for both the driver and front passenger Allows individual climate settings for both driver and front passenger Driver and front passenger can choose a temperature up to 30 degrees difference May require additional optional equipment
- 12.3" diagonal color Driver Information Center, Includes driver personalization, warning messages and vehicle information Replaces traditional analog gauges with fully reconfigurable high definition cluster layout High definition display provides crisp, premium appearance
- Power windows with rear express-down
- Driver memory, Press memory button 1 or 2 to program and recall preferences 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
- Outside temperature display, Located in infotainment display
- Rear air vents, Provides cabin comfort for rear occupants
- Wrapped steering wheel
- Heated driver and front outboard passenger seats, Separate buttons on the climate control panel allow you to choose from 3 levels of warmth At the touch of a button you can warm the cushions and seatbacks with multilevel temperature control Individually controlled Seats can be programmed to automatically warm up when it's cold out May require additional optional equipment
- Heated rear outboard seats, At the touch of a button you can warm the cushions Provide comfort in cold weather for passengers in the rear outboard seating positions Passengers can manage heat settings with their own controls May require additional optional equipment
- 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 Bluetooth®2 streaming audio for music and select phones Wireless Apple CarPlay™ capability for compatible phones³ Wireless Android Auto™ capability for compatible phones⁴ Customize and manage entertainment and vehicle feature setting Use, control and manage select smartphone apps through the Infotainment system Voice-activated technology for phone
- Head-Up Display, Multi-color 15" diagonal Head-Up Display Projects vehicle information onto the windshield low in the driver's line of sight to help you keep your eyes on the road Can select key vehicle information to display including an off-road inclinometer Adjustable vertical position and brightness of the display May require additional optional equipment
- Universal Home Remote, 3-channel programmable Conveniently activates compatible devices such as garage door openers, security systems, and home automation devices from inside your vehicle May require additional optional equipment
- Rear Camera Mirror, Uses a camera to provide you with the option of using a wide and less obstructed view behind your vehicle while driving instead of a traditional rearview mirror¹ The feature also allows brightness, vertical tilt and zoom adjustments May require additional optional equipment
- 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 switch Allows the driver to operate upfitter-installed equipment conveniently from inside the cab Provides 3-30 amp and 2 – 20 amp configurable circuits to facilitate installation of aftermarket electrical accessories by the dealer or upfitter¹ at customer expense Installation instructions and technical assistance available at www.gmupfitter.com May require additional optional equipment
- Power sliding rear window with rear defogger, Utilizes a warming grid to remove fog or frost from the rear window The window switch is conveniently located in the overhead console for easy 1-touch operation May require additional optional equipment
Entertainment
- 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 Bluetooth®2 streaming audio for music and select phones Wireless Apple CarPlay™ capability for compatible phones³ Wireless Android Auto™ capability for compatible phones⁴ Customize and manage entertainment and vehicle feature setting Use, control and manage select smartphone apps through the Infotainment system Voice-activated technology for phone
- Wi-Fi® hotspot capable, Terms and limitations apply. See onstar.com or dealer for details. May require additional optional equipment
- Bose Premium Sound System, 7-speakers with Richbass® woofer Bose is renowned for expert sound engineering and high-quality audio and with premium speakers positioned throughout the cabin May require additional optional equipment
- 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
- 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 athletes¹ SiriusXM 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 more Experience 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
- Wireless phone projection, For Apple CarPlay™¹ and Android Auto™²
Mechanical
- Red vertical recovery hooks, Two front frame-mounted¹
- 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 below the instrument panel May require additional optional equipment
- Pickup bed, Roll-formed high-strength steel Includes bed assist step
- In-Vehicle Trailering App, Checklist¹ Trailer maintenance reminders Trailer security alerts Trailer mileage Tow/haul reminder Trailer electrical diagnostics Includes trailer tire pressure monitoring alert ONLY when (PTT) trailer tire pressure monitor system is factory ordered and sensors are installed
- Skid plates, Help protect the front underbody, oil pan and transfer case May require additional optional equipment
- Heavy-Duty Air Filter, Thick construction helps to trap more dirt before it can enter the air intake
- Air filtration monitoring, Alerts the driver when the engine air filter needs replacement
- Brake pad wear indicator
- External engine oil cooler, Heavy-duty air-to-oil cooler Helps extend engine oil life under heavy loads
- Autotrac® 2-speed transfer case with push button controls, 4-button control 2WD, Auto, 4WD, 4WD LO 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 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
- Fully boxed frame, Hydroformed front section High-strength steel
- Push Button Start
- 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
- 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
- Digital Variable Steering Assist, This system automatically adjusts steering based on speed, road conditions, and other inputs to help reduce driver fatigue
- 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
- 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
- Dual, 220 amp primary and 170 auxiliary amp alternators, May require additional optional equipment
- 6.6L Duramax Turbo-Diesel V8 engine, 470 hp [350.5 kW] @ 2800 rpm 975 lb-ft of torque [1322 Nm] @ 1600 rpm 3.42 rear axle ratio Exhaust brake Engine block heater Capped fuel fill Paired with an Allison® 10-speed automatic transmission Diesel Exhaust Fluid (DEF) fill located in fuel door Engine after run feature for cooling performance May require additional optional equipment
- Engine block heater, Helps ease cold weather starts Heats the engine and engine block fluids
- Allison® 10-speed automatic transmission, Electronically controlled with overdrive for smooth-shifting performance Tow/Haul mode that reduces shift cycling for better control and improved cooling when towing or hauling heavy loads 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) May require additional optional equipment
- Diesel exhaust brake, Reduces the amount of conventional braking needed while towing a heavy trailer or driving downhill Uses the variable vanes in the turbocharger to smoothly and quietly create additional back pressure in the engine to help slow the vehicle Works with the transmission's Tow/Haul mode and Auto Grade Braking to help the driver maintain the desired speed even on long, steep downgrades Switch activated May require additional optional equipment
- High idle switch, Runs the engine in High Idle mode, holding the engine at approximately 1200 rpm Operates using the cruise control buttons on the steering wheel High Idle mode is deactivated when you turn off the truck or before you drive off May require additional optional equipment
- 11,350 lbs. GVWR, When properly equipped; includes weight of vehicle, passengers, cargo and equipment
- 3.42 rear axle ratio, Requires a diesel engine
- 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
Safety
- 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
- 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
- HD Surround Vision, Provides selectable digital camera views of the area around your vehicle¹ Can help you park or avoid vehicles and objects¹ You can also display a guideline to show where your vehicle is heading¹ Tailgate must be in the raised position for the HD Rear Vision Camera to operate properly Requires Auxiliary Trailer Camera if one of the following camera views is desired: Transparent Trailer, Rear Trailer View, Picture-in-Picture or Inside Trailer View May require additional optional equipment
- 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
- 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
- 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
- Safety Alert Seat, Uses left-, right- or both-side driver seat vibration pulses to help you detect and identify the direction of potential crashes¹ You can also switch to beeping crash avoidance alerts May require additional optional equipment
- 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
- LED Daytime Running Lamps
- OnStar® services capable, See onstar.com for details and limitations. Services vary by model. Service plan required.
- 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
- Rear Seat Belt Indicator
- 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
- Hitch View, Shows a close-up view of the trailer hitch¹ In Reverse, the view can be used to line up your hitch to your trailer When driving, the view can be used to check your trailer hitch Shifting to Park automatically engages the Electric Parking Brake (if equipped) May require additional optional equipment
- Rear Cross Traffic Alert, When in Reverse, warns you of detected vehicles crossing behind you¹ May require additional optional equipment
- Bed View Camera, Camera in the Center High Mount Stop Lamp (CHMSL) provides an elevated view of the truck bed from the back of the cab¹ Allows driver to see inside the cargo bed on the infotainment display to help with 5th wheel or gooseneck hitching and to check cargo Includes 2 Trailer Camera Provisions May require additional optional equipment
- Trailering camera provisions, Includes connector for accessory wiring harness
- 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
- Trailer Side Blind Zone Alert, Provides visual side-mirror alerts when a moving vehicle is detected in a side blind zone that is extended to trailer lengths¹ May require additional optional equipment
- 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
- 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
- Seat Belt Adjustable Guide Loops, Front row only
- 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
Package
- Sierra HD Pro Safety, Forward Collision Alert¹ Following Distance Indicator¹ Front Pedestrian Braking¹ IntelliBeam Lane Departure Warning¹ Buckle to Drive Automatic Emergency Braking¹
- ProGrade Trailering System, Hitch Guidance with Hitch View In-vehicle Trailering App
- X31 Off-Road Package, Off-Road suspension Hill Descent Control Skid plates Twin-tube Rancho shocks
- 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
- AT4 Preferred Package, Universal Home Remote Rear sliding power window LED roof marker lamps
- AT4 Premium Plus Package, AT4 Preferred Package Power sunroof Technology Package AT4 high clearance step May require additional optional equipment
- Technology Package, Rear Camera Mirror¹ Multi-color 15" Diagonal Head-Up Display¹ AT4 Preferred Package on AT4 May require additional optional equipment
- Snow Plow Prep / Camper Package, Power feed to accommodate a backup and roof emergency light¹ A single 220-amp alternator Heavy-duty front springs Under body skid plates to help protect the transfer case from debris May require additional optional equipment
Warranty
- Corrosion: 3 Years/36,000 Miles, Rust-Through, 6 Years/100,000 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
- 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
- Warranty: <<< Preliminary 2025 Warranty >>>
- Basic: 3 Years/36,000 Miles
- Maintenance: First Visit: 12 Months/12,000 Miles
Options
- Snow Plow Prep/Camper Package
- Engine, Duramax 6.6L Turbo-Diesel V8, B20-Diesel compatible
- Upfitter switch kit, (5)
- Rear axle, 3.42 ratio
- LPO, GMC MultiPro tailgate Step Lights
- Onyx Black
- GVWR, 11,350 lbs. (5148 kg)
- Transmission, Allison 10-speed automatic
- Gooseneck / 5th Wheel Prep Package -- Hitch platform to accept Gooseneck or 5th Wheel hitch.
- High idle switch
- Emissions, Federal requirements
- AT4 Premium Plus Package
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- 6.2L EcoTec3 V8 engine
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All new vehicle pricing is inclusive of all General Motors rebates and incentives and is plus tax, title, and license.
*All pricing and details are believed to be accurate, but we do not warrant or guarantee such accuracy. The prices shown above may vary from region to region, as will incentives, and are subject to change. Vehicle information is based off standard equipment and may vary from vehicle to vehicle. Call or email for complete vehicle information. All specifications, prices and equipment are subject to change without notice. Prices and payments do not include tax, titles, tags, finance charges, documentation charges, emissions testing charges, or other fees required by law, vehicle sellers or lending organizations.
Based on 2013 EPA mileage estimates, reflecting new EPA fuel economy methods beginning with 2008 models. Use for comparison purposes only. Do not compare to models before 2008. Your actual mileage will vary depending on how you drive and maintain your vehicle.
While every effort has been made to ensure display of accurate data, the vehicle listings within this website may not reflect all accurate vehicle items. Accessories and color may vary. All inventory listed is subject to prior sale. The vehicle photo displayed may be an example only. Vehicle Photos may not match exact vehicles. Please confirm vehicle price with Dealership. See Dealership for details.
All Vehicles
MPG estimates on this website are EPA estimates; your actual mileage may vary. For used vehicles, MPG estimates are EPA estimates for the vehicle when it was new. The EPA periodically modifies its MPG calculation methodology; all MPG estimates are based on the methodology in effect when the vehicles were new (please see the Fuel Economy portion of the EPAs website for details, including a MPG recalculation tool).
The features and options listed are for the new 2025 GMC Sierra 2500 HD and may not apply to this specific vehicle.
Advertised Price Excludes Tax, Title, License and Documentary Service Fee.
Learn More About This New 2025 GMC Sierra 2500 HD AT4 Truck near Chicago
We would like to invite you to Castle Buick GMC for an amazing opportunity to purchase a GMC Sierra 2500 HD AT4 at an incredible price. This model features a powerful 6.6L Duramax Turbo-Diesel V8 engine engine and a 10-Speed A/T transmission, and is finished in a beautiful Black paint.
At Castle Buick GMC, we pride ourselves on our exceptional customer service and automotive expertise. No matter what you're looking for in a truck or SUV, our sales team will assist you in finding the perfect model to fit your unique lifestyle. If you still owe money on your trade-in, don't worry. Our finance experts will help you find a vehicle and payment plan that works for your budget. We offer a variety of incentive, finance, and lease programs to ensure that you get the best deal possible.
Contact us at (708) 853-3542 or visit us at Castle Buick GMC to test drive and see for yourself the amazing incentives and special offers available on the GMC Sierra 2500 HD AT4. We're conveniently located at 7400 W CERMAK RD in NORTH RIVERSIDE, IL 60546-1404, just a short drive from Maywood, Brookfield, and La Grange.
Don't miss this opportunity to drive away in a beautiful new GMC Sierra 2500 HD AT4 at an unbeatable price. We look forward to seeing you soon at Castle Buick GMC.
At Castle Buick GMC, we pride ourselves on our exceptional customer service and automotive expertise. No matter what you're looking for in a truck or SUV, our sales team will assist you in finding the perfect model to fit your unique lifestyle. If you still owe money on your trade-in, don't worry. Our finance experts will help you find a vehicle and payment plan that works for your budget. We offer a variety of incentive, finance, and lease programs to ensure that you get the best deal possible.
Contact us at (708) 853-3542 or visit us at Castle Buick GMC to test drive and see for yourself the amazing incentives and special offers available on the GMC Sierra 2500 HD AT4. We're conveniently located at 7400 W CERMAK RD in NORTH RIVERSIDE, IL 60546-1404, just a short drive from Maywood, Brookfield, and La Grange.
Don't miss this opportunity to drive away in a beautiful new GMC Sierra 2500 HD AT4 at an unbeatable price. We look forward to seeing you soon at Castle Buick GMC.