2025 GMC Sierra 1500 AT4 Crew Cab 4WD

2025 GMC SIERRA 1500 AT4 4WD FOR SALE | ONYX BLACK | LANCASTER PA DURAMAX 3.0L TURBO DIESEL | AT4 PREMIUM PACKAGE | FULLY LOADED OFF-ROAD TRUCK If you are looking for a 2025 GMC Sierra 1500 AT4 for sale in Lancaster PA, this is the exact high-demand configuration buyers search for: Onyx Black exterior, Duramax 3.0L Turbo Diesel power, factory AT4 off-road capability, and premium luxury upgrades. This is not a basic Sierra. This is a fully loaded AT4 with Preferred Package, Premium Package, Technology Package, and trailering equipment built for serious truck owners across Central Pennsylvania. 2025 GMC SIERRA AT4 DURAMAX PERFORMANCE & 4WD CAPABILITY Built for towing, long-distance driving, and off-road confidence: 3.0L Duramax Turbo Diesel Inline-6 10-Speed Automatic Transmission AT4 4WD System with Off-Road Suspension Auto-Locking Rear Differential Hill Descent Control Red AT4 Recovery Hooks Heavy-Duty Air Filter for demanding conditions Perfect for buyers searching Duramax AT4 diesel truck for sale in PA. AT4 PREMIUM PACKAGE + PREFERRED PACKAGE (HIGH DEMAND) This Sierra AT4 is equipped with the packages most shoppers want: AT4 Preferred Package AT4 Premium Package Preferred Equipment Group 4SB Technology Package This is the top-level AT4 setup without stepping into Denali pricing. PREMIUM INTERIOR WITH KALAHARI ACCENTS Luxury-grade comfort with aggressive truck styling: Jet Black Leather with Kalahari Accents Heated and Ventilated Front Seats Heated 2nd Row Outboard Seats Front Premium Floor Liners Power Rake and Telescoping Steering Column Ideal for drivers wanting a luxury off-road truck in Lancaster PA. ADVANCED TECHNOLOGY & DRIVER-CONFIDENCE FEATURES Loaded with modern GMC tech: Multicolor 15-Inch Head-Up Display HD Surround Vision Bed View Camera Rear Camera Mirror Wireless Charging Keyless Open and Push Button Start Premium Bose 7-Speaker Sound System GMC OnStar Connected Services This is one of the most advanced Sierra 1500 AT4 models available. TRAILERING & TOW PACKAGE FEATURES Built for serious towing and hauling across Pennsylvania: Integrated Trailer Brake Controller In-Vehicle Trailering System App Hitch Guidance with Hitch View Trailer Camera Provisions Trailer Side Blind Zone Alert Trailering Package A perfect match for buyers searching 2025 Sierra AT4 towing truck for sale. EXTERIOR STYLE & OFF-ROAD PRESENCE Onyx Black AT4 trucks are some of the most searched nationwide: Onyx Black Exterior Finish Black Chrome Grille Insert Bars Off-Road High Clearance Steps Spray-On Pickup Bedliner with GMC Logo Deep-Tinted Glass Rear Wheelhouse Liners Blacked-out, aggressive, and built to dominate. WHY THIS 2025 GMC SIERRA 1500 AT4 STANDS OUT A 2025 Sierra 1500 AT4 Duramax Diesel with: Premium + Preferred Packages Technology Package Head-Up Display HD Surround Vision Full trailering equipment Luxury interior with Kalahari accents Onyx Black aggressive styling This is one of the most wanted setups for buyers in Lancaster PA, Harrisburg, York, Lebanon, and the Central PA truck market. AVAILABLE NOW AT MARK MARTIN MOTORS LANCASTER, PENNSYLVANIA Serving GMC truck buyers across Central PA and the surrounding Mid-Atlantic region. NO HAGGLE PRICING - 106 POINT CERTIFIED INSPECTION FINANCING AVAILABLE NATIONWIDE - WE WELCOME YOUR TRADES NO PRICING GAMES WITH HIDDEN FEES! CALL US FOR YOUR OUT THE DOOR PRICE. Call Us Today @ 717-664-2222! We are located in Lancaster PA near Harrisburg and Philadelphia. Disclaimer: We do our best to make sure this information is accurate; however, we are not responsible for any errors or omissions contained on these pages. Please verify any information in question with Mark Martin Motors.

Additional Information

Navigation System,AT4 Preferred Package,AT4 Premium Package,Preferred Equipment Group 4SB,Technology Package,Trailering Package,7 Speakers,AM/FM radio: SiriusXM with 360L,Premium Bose 7-Speaker Sound System,Radio data system,Radio: Premium GMC Infotainment Audio System,SiriusXM w/360L Trial Subscription,Steering Wheel Audio Controls,Air Conditioning,Automatic temperature control,Electric Rear-Window Defogger,Front dual zone A/C,Rear window defroster,120-Volt Bed Mounted Power Outlet,120-Volt Interior Power Outlet,Driver Memory,Memory seat,Power driver seat,Power Front Passenger Windows w/Express Up/Down,Power Front Windows w/Driver Express Up/Down,Power Rear Windows w/Express Down,Power steering,Power windows,Push Button Start,Remote keyless entry,Remote Vehicle Starter System,Steering wheel mounted audio controls,Universal Home Remote,Auto-Locking Rear Differential,Off-Road Suspension,Power Rake & Telescoping Steering Column,Speed-sensing steering,Traction control,4-Wheel Disc Brakes,ABS brakes,Dual front impact airbags,Dual front side impact airbags,Emergency communication system: OnStar,Front anti-roll bar,Front wheel independent suspension,Keyless Open & Start,Low tire pressure warning,Occupant sensing airbag,Overhead airbag,Power Door Locks,Power Sunroof,Brake assist,Electronic Stability Control,Hill Descent Control,Auto High-beam Headlights,Delay-off headlights,Front fog lights,Fully automatic headlights,Perimeter Lighting,Panic alarm,Security system,Theft Deterrent System (Unauthorized Entry),Speed control,220 Amp Alternator,Block heater,Engine Block Heater,Heavy-Duty Air Filter,Auto-dimming door mirrors,Black Chrome Grille Insert Bars,Body Color Wheel Arch Moldings (LPO),Bumpers: body-color,Front License Plate Kit,Heated door mirrors,IntelliBeam Automatic High Beam On/Off,LED Cargo Area Lighting,Off-Road High Clearance Step (LPO),Power door mirrors,Rear step bumper,Rear Wheelhouse Liners,Spray-On Pickup Bedliner w/GMC Logo,2 Charge/Data USB Ports Inside Center Console,2 Type-C Charge-Only Rear USB Ports,2 USB Ports,Apple CarPlay/Android Auto,Auto-dimming Rear-View mirror,Automatic Emergency Braking,Bed View Camera,Buckle to Drive,Color-Keyed Carpeting Floor Covering,Compass,Driver door bin,Driver vanity mirror,Floor-Mounted Center Console,Following Distance Indicator,Forward Collision Alert,Front Pedestrian Braking,Front Prem Floor Liners w/Removable Carpet Insert,Front reading lights,HD Surround Vision,Heated steering wheel,Illuminated entry,Lane Keep Assist w/Lane Departure Warning,Multicolor 15" Diagonal Head-Up Display,OnStar Services Capable,Outside temperature display,Overhead console,Passenger vanity mirror,Rear Camera Mirror,Rear Cross Traffic Braking,Rear Pedestrian Detection,Rear Prem Floor Liners w/Removable Carpet Insert,Rear reading lights,Rear seat center armrest,Rear Underseat Storage (LPO),Safety Alert Seat,Tachometer,Telescoping steering wheel,Tilt steering wheel,Trailer Camera Provisions,Trailer Side Blind Zone Alert,Trip computer,Ultrasonic Front & Rear Park Assist,Voltmeter,Wi-Fi Hotspot Capable,Wireless Apple CarPlay/Wireless Android Auto,Wireless Charging,10-Way Power Driver Seat Adjuster w/Lumbar,10-Way Power Passenger Seat Adjuster w/Lumbar,Front Bucket Seats,Front Center Armrest,Heated 2nd Row Outboard Seats,Heated Driver & Front Outboard Passenger Seating,Heated front seats,Heated rear seats,Perforated Front Leather Seat Trim,Power passenger seat,Split folding rear seat,Ventilated Driver & Front Passenger Seats,Ventilated front seats,Passenger door bin,Hitch Guidance,Hitch View,In-Vehicle Trailering System App,Integrated Trailer Brake Controller,Red Recovery Hooks,Alloy wheels,Wheels: 20" x 9" Machined Aluminum,Deep-Tinted Glass,Front Rain-Sensing Wipers,Power Sliding Rear Window w/Rear Defogger,Rain sensing wipers,Variably intermittent wipers,3.23 Rear Axle Ratio,TECH PKG! SUNROOF! HIGH CLEARANCE BOARDS! 3.0 DIESEL!