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Used 2025 GMC Sierra 1500 AT4 Truck Photo 1 of 4

Used 2025 GMCSierra 1500 AT4

  • Diesel
    Exterior Color
    Onyx Black
    Interior Color
    Jet Black With Kalahari Accents
    Odometer
    13,292 miles
    Body/Seating
    Truck/5 seats
    Fuel Economy
    22/26 MPG City/Hwy
    Transmission
    10-Speed Automatic
    Drivetrain
    4WD
    Engine
    3.0L I6
    VIN
    1GTUUEE84SZ217356
    Stock Number
    12098FA
    GMC Sierra 1500
    • CARFAX 1-Owner Fair Value Badge

    Highlighted Features

    • Navigation system
    • Lane departure
    • Leather upholstery
    • Automatic temperature control
    • Emergency communication system
    • Wireless phone connectivity
    • Parking sensors
    • Exterior parking camera front
    • Exterior parking camera left
    • Exterior parking camera right
    • Exterior parking camera rear
    • Front dual zone A/C

    • Should you buy a ZR2 or a AT4X?


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    Included Packages & Accessories

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

    Included Packages & Options

    • Technology Package$1,525
      • Rear Camera Mirror
      • Multicolor 15" Diagonal Head-Up Display
      • Bed View Camera
    • AT4 Premium Package$1,045
      • AT4 Preferred Package
    • AT4 Preferred Package$350
      • Universal Home Remote
    Included Options
    • Power Sunroof$995

    Detailed Specifications

    • 1-touch down
    • 1-touch up
    • Adaptive Cruise Control
    • Air conditioning
    • Auto-dimming rearview mirror
    • Automatic temperature control
    • Driver door bin
    • Driver vanity mirror
    • Emergency communication system: OnStar
    • Front beverage holders
    • Front dual zone A/C
    • Heated steering wheel
    • Illuminated entry
    • Memory seat
    • Navigation system
    • Overhead console
    • Passenger door bin
    • Passenger vanity mirror
    • Power windows
    • Proximity key: doors and push button start
    • Rear beverage holders
    • Rear door bins
    • Remote engine start
    • Remote keyless entry
    • Speed control
    • Surround View Monitor: HD Surround Vision w/Hitch View yes
    • Telescoping steering wheel
    • Tilt steering wheel
    • Alloy wheels
    • Front anti-roll bar
    • Front wheel independent suspension
    • Power steering
    • Speed-sensing steering
    • Tires: all-terrain
    • 1st row LCD monitors: 2
    • Primary LCD size: 13.4"
    • Radio data system
    • Smart device integration: Apple CarPlay/Android Auto
    • Speaker type: Bose
    • Speakers: 7
    • Steering wheel mounted audio controls
    • Turn-by-turn navigation directions: OnStar Turn-by-Turn Navigation
    • Wireless Phone Charger: front
    • Wireless phone connectivity: Bluetooth
    • Front center armrest
    • Front seats: bucket
    • Heated front seats
    • Heated rear seats
    • Leather upholstery
    • Max seating capacity: 5
    • Power 2-way driver lumbar support
    • Power 2-way passenger lumbar support
    • Power driver seat
    • Power passenger seat
    • Rear seat center armrest
    • Rear seats: split-bench
    • Rear seats Folding position: fold-up cushion
    • Seat Upholstery: leather
    • Split folding rear seat
    • Ventilated front seats
    • Block heater
    • Drive type: four-wheel
    • Engine location: front
    • Fuel economy city: 22mpg
    • Fuel economy combined: 24mpg
    • Fuel economy highway: 26mpg
    • Fuel tank capacity: 24.0gal.
    • Hybrid traction battery type: none
    • Manual-shift auto
    • Mode select transmission
    • Rear locking differential
    • Transmission: 10 speed automatic
    • Variable intake manifold
    • Variable valve control
    • Approach angle: 26 deg
    • Departure angle: 26 deg
    • Ground clearance (min): 282mm (11.1")
    • Ramp breakover angle: 20 deg
    • Auto-dimming door mirrors
    • Bedliner
    • Bumpers: body-color
    • Heated door mirrors
    • Hitch Class: IV
    • Left rear passenger door: conventional
    • Power door mirrors
    • Rear cargo: tailgate
    • Rear step bumper
    • Right rear passenger: conventional
    • Skid plates
    • Tailpipe finisher: chrome
    • Trailer hitch
    • Trailer sway control
    • Exterior body width: 2,063mm (81.2")
    • Exterior height: 1,990mm (78.3")
    • Exterior length: 5,916mm (232.9")
    • Front headroom: 1,092mm (43.0")
    • Front hiproom: 1,544mm (60.8")
    • Front legroom: 1,131mm (44.5")
    • Front shoulder room: 1,638mm (64.5")
    • Greenhouse Gas Score (GG): 4
    • Rear headroom: 1,019mm (40.1")
    • Rear hiproom: 1,505mm (59.2")
    • Rear legroom: 1,102mm (43.4")
    • Rear shoulder room: 1,626mm (64.0")
    • Turning radius: 7.2m (23.7')
    • Wheelbase: 3,747mm (147.5")
    • Appearance: analog
    • Auto high-beam headlights
    • Blind spot: Trailer Side Blind Zone Alert warning
    • Compass
    • Configurable
    • Delay-off headlights
    • Exterior parking camera front
    • Exterior parking camera left
    • Exterior parking camera rear: HD Rear Vision Camera w/Hitch View yes
    • Exterior parking camera right
    • Front fog lights
    • Front reading lights
    • Fully automatic headlights
    • Lane departure: Lane Keep Assist with Lane Departure Warning active
    • Low tire pressure warning
    • Oil pressure gauge
    • Outside temperature display
    • Parking sensors: Front and Rear Park Assist front and rear
    • Rain sensing wipers
    • Rear reading lights
    • Rear window defroster
    • Tachometer
    • Trip computer
    • Variably intermittent wipers
    • Voltmeter
    • 4 wheel disc brakes
    • ABS brakes
    • Brake assist
    • Dual front impact airbags
    • Dual front side impact airbags
    • Electronic stability
    • Forward collision: Forward Collision Alert with Automatic Braking mitigation
    • Front pedestrian detection: prevention
    • Ignition disable
    • Occupant sensing airbag
    • Overhead airbag
    • Panic alarm
    • Perimeter/approach lights
    • Rear collision: Rear Cross Traffic Braking mitigation
    • Security system
    • Traction control

    Standard Features

    • Rear Camera Mirror
    • Multicolor 15" Diagonal Head-Up Display
    • Bed View Camera
    • AT4 Preferred Package
    • Universal Home Remote
    • Rear Cross Traffic Braking
    • Rear Pedestrian Detection
    • Premium Bose 7-Speaker Sound System
    • Floor-Mounted Center Console
    • Electric Rear-Window Defogger
    • Power Door Locks
    • Push Button Start
    • Remote Vehicle Starter System
    • Color-Keyed Carpeting Floor Covering
    • OnStar Services Capable
    • Wi-Fi Hotspot Capable
    • 120-Volt Interior Power Outlet
    • 2 Type-C Charge-Only Rear USB Ports
    • 2 USB Ports
    • 2 Charge/Data USB Ports Inside Center Console
    • HD Surround Vision
    • Trailer Side Blind Zone Alert
    • Trailer Camera Provisions
    • Heated 2nd Row Outboard Seats
    • Steering Wheel Audio Controls
    • Wireless Charging
    • Deep-Tinted Glass
    • Black Chrome Grille Insert Bars
    • LED Cargo Area Lighting
    • Perimeter Lighting
    • Red Recovery Hooks
    • Wheels: 20" x 9" Machined Aluminum
    • Rear Wheelhouse Liners
    • Front Rain-Sensing Wipers
    • Trailering Package
    • Hitch View
    • 220 Amp Alternator
    • Heavy-Duty Air Filter
    • Auto-Locking Rear Differential
    • Hill Descent Control
    • Off-Road Suspension
    • Integrated Trailer Brake Controller
    • Driver Memory
    • Premium Bose 7-Speaker Sound System
    • Wireless Apple CarPlay/Wireless Android Auto
    • 120-Volt Bed Mounted Power Outlet
    • Hitch Guidance

    Dealer Notes

    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

    KBB.com Consumer Reviews

    Kelley Blue Book - KBB.com
    Overall4Out of 5

    • Nice truck

      By froggy on Sunday, December 06, 2020

      3.0
      I purchased this truck brand new and at 3900 miles I started to have a misfire. The warranty put a refurbished rebuilt engine in it. I was not aware that the warranty doesn't put new parts in just refurbished rebuilt parts. I traded in and lost my favorite blue truck. Not a fan of the whole process. Love the truck just not how the warranty went. I would not own another brand or model the 2020 is the nicest riding and looking. Just got a bad motor from the manufacture.…

    • Great Truck

      By Mel on Sunday, April 25, 2021

      5.0
      I love it, I get compliments every where I go, and it apparently worth more than I paid for it brand new, a year and a half later. can't ask for much more than that.…

    • Well done GM

      By Tony on Thursday, November 26, 2020

      5.0
      This truck has a 10 speed transmission that you can barely feel it shift. Traded in an F150 and test drove a similar equipped Ram. Although the Ram was nice, the styling of the GMC won me over, along with the tailgate! It also pulls my boat way better than the Ford, just smoother all around. The cabin is very quiet and the gas mileage is much better than V8 Ford. The cabin is super quiet and the ride is awesome. Love the adaptive cruise control too. The technology is fine and the screen is plenty big. Remember, you are driving this truck, not going to thr drive in! Most importantly, the controls are simple to use and Bose stereo sounds great! Oh, and I got it cheaper than the similar Ram too!…
    Based on 89 consumer ratings for 2019–2026 models. | Privacy
    Price
    $59,900
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