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2021 GMC Sierra 1500 AT4 Crew Cab Pickup

AT4, 10-SPEED AUTOMATIC, ELECTRONICALLY CONTROLLED, 3GTU9EETXMG243761, 115,000 mi.
Stock Z86230S
Dealer Sheehy GMC of Hagerstown
Sheehy Easy Price
$36,343
6 Cyl
10-SPEED AUTOMATIC, ELECTRONICALLY CONTROLLED
3GTU9EETXMG243761
Satin Steel Metallic
Jet Black with Kalahari accents Interior
22/26 mpg

ABOUT THIS VEHICLE

Why BUY from Sheehy GMC?
When you choose this Satin Steel Metallic 2021 GMC Sierra 1500 AT4 with 0 miles, you are not just buying a used vehicle - you are investing in quality, reliability and peace of mind. Our clientele depend on us for Transparent Pricing, Convenience and, most importantly, Customer FIRST Service!
No Accidents!
What this vehicle includes:

Driver Alert Package I

  • Perimeter Lighting
  • Ultrasonic Front and Rear Park Assist
  • Rear Cross Traffic Alert
  • Lane Change Alert with Side Blind Zone Alert

Driver Alert Package II ($1,095 value)

  • Safety Alert Seat
  • Adaptive Cruise Control
  • IntelliBeam Automatic High Beam On/off
  • Following Distance Indicator
  • Forward Collision Alert
  • Lane Keep Assist with Lane Departure Warning
  • Automatic Emergency Braking
  • Front Pedestrian Braking

Technology Package ($2,075 value)

  • Rear Camera Mirror
  • 8" Driver Information Center
  • Multicolor 15" Diagonal Head-Up Display
  • Bed View Camera
  • HD Surround Vision with 2 Trailer View Camera Provisions

AT4 Value Package ($2,105 value)

    Preferred Equipment Group 4SB

    • GMC Connected Access Capable
    • Power Front Passenger Windows with Express Up/down
    • Power Rear Windows with Express Down
    • Deep-Tinted Glass
    • Keyless Open and Start
    • Power Door Locks
    • Power Front Windows with Driver Express Up/down
    • Rear Wheelhouse Liners
    • Color-Keyed Carpeting Floor Covering
    • Front Premium Floor Liners with Removable Carpet Insert
    • Remote Vehicle Starter System
    • Electric Rear-Window Defogger
    • Spray-On Pickup Bed Liner with AT4 Logo
    • Compass
    • Floor-Mounted Center Console
    • Auto-Locking Rear Differential
    • Body-Color Surround Grille
    • Hill Descent Control
    • Integrated Trailer Brake Controller
    • Heavy-Duty Air Filter
    • Heated Driver and Front Outboard Passenger Seating
    • 120-Volt Instrument Panel Power Outlet
    • Auxiliary External Transmission Oil Cooler
    • 12-Volt Rear Auxiliary Power Outlet
    • Ventilated Driver and Front Passenger Seats
    • 170 Amp Alternator
    • 2 USB Ports
    • 2 USB Ports (1st Row)
    • Electrical Lock Control Steering Column
    • Manual Tilt-Wheel and Telescoping Steering Column
    • 2-Speed Transfer Case
    • Skid Plates
    • ProGrade Trailering System
    • 4.2" Diagonal Color Display Driver Info Center
    • OnStar and GMC Connected Services Capable
    • LED Cargo Area Lighting
    • Red Recovery Hooks
    • Steering Wheel Audio Controls
    • Rear Dual USB Charging-Only Ports
    • Theft Deterrent System (unauthorized Entry)
    • HD Rear Vision Camera
    • 4G LTE Wi-Fi Hotspot Capable
    • Off-Road Suspension
    • Trailering Package

    AT4 Preferred Package

    • Power Sliding Rear Window with Rear Defogger
    • Premium GMC Infotainment System Radio with Navigation
    • Wireless Charging
    • Universal Home Remote
    • Premium Bose 7-Speaker Sound System


    Safety and Security

    • The vehicle is equipped with a system that senses, and then prepares, the vehicle and/or occupants, for an impending forward collision.
    • The vehicle constantly monitors the roadway in front of the vehicle and identifies and tracks pedestrians on an interior display. If the system determines a likely impact, it will automatically take preventative steps to avoid hitting the pedestrian.
    • The vehicle is equipped with a camera that displays an image of the area behind the vehicle on an interior display.
    • The vehicle is equipped with a camera that displays an image of the area behind the vehicle on an interior display.
    • An active lane departure system alerts the driver of unintended movement of the vehicle out of a designated traffic lane and automatically maintains the vehicle's position within that lane.

    Technology and Telematics

    • Without the need for a manufacturer specific app to be installed on the smart device, the vehicle infotainment system can access and control functions of a smart device physically plugged-into the vehicle.
    • Mobile devices can wirelessly connect to the internet through the vehicle's private mobile network.

    EMISSIONS, CONNECTICUT, DELAWARE, MAINE, MARYLAND, MASSACHUSETTS, NEW JERSEY, NEW YORK, OREGON, PENNSYLVANIA, RHODE ISLAND, VERMONT AND WASHINGTON STATE REQUIREMENTS, ENGINE, DURAMAX 3.0L TURBO-DIESEL I6, TRANSMISSION, 10-SPEED AUTOMATIC, ELECTRONICALLY CONTROLLED, GVWR, 7100 LBS. (3221 KG), REAR AXLE, 3.23 RATIO, WHEELS, 20" X 9" (50.8 CM X 22.9 CM) MACHINED ALUMINUM WITH CARBON GREY METALLIC ACCENTS, TIRES, 275/60R20SL ALL-TERRAIN, BLACKWALL, TIRE, SPARE 255/80R17SL ALL-SEASON, BLACKWALL, SATIN STEEL METALLIC, SEATS, FRONT BUCKET, JET BLACK WITH KALAHARI ACCENTS, PERFORATED LEATHER FRONT SEAT TRIM, AUDIO SYSTEM, PREMIUM GMC INFOTAINMENT SYSTEM WITH NAVIGATION AND 8" DIAGONAL COLOR TOUCH-SCREEN, INCLUDES MULTI-TOUCH DISPLAY, AM/FM STEREO, AT4 VALUE PACKAGE, TECHNOLOGY PACKAGE, AT4 PREFERRED PACKAGE, DRIVER ALERT PACKAGE II, DRIVER ALERT PACKAGE I, ENGINE BLOCK HEATER, ALTERNATOR, 220 AMPS, LPO, WHEEL LOCKS, SET OF 4, SUNROOF, POWER, INTELLIBEAM, AUTOMATIC HIGH BEAM ON/OFF, WINDOW, POWER, REAR SLIDING WITH REAR DEFOGGER, LICENSE PLATE KIT, FRONT, BOSE SOUND SYSTEM, PREMIUM 7-SPEAKER SYSTEM, SEATS, HEATED SECOND ROW OUTBOARD SEATS, DRIVER INFORMATION CENTER, ENHANCED, 8" DIAGONAL MULTICOLOR DIGITAL DISPLAY, MULTICOLOR 15" DIAGONAL HEAD-UP DISPLAY, UNIVERSAL HOME REMOTE, ADAPTIVE CRUISE CONTROL, WIRELESS CHARGING, REAR CAMERA MIRROR, INSIDE REARVIEW AUTO-DIMMING, AUTOMATIC EMERGENCY BRAKING, FRONT PEDESTRIAN BRAKING, BED VIEW CAMERA, HD SURROUND VISION WITH TWO TRAILER VIEW CAMERA PROVISIONS, FRONT AND REAR PARK ASSIST, ULTRASONIC, FOLLOWING DISTANCE INDICATOR, FORWARD COLLISION ALERT, LANE KEEP ASSIST, LANE CHANGE ALERT, REAR CROSS TRAFFIC ALERT, SAFETY ALERT SEAT Come on in to Sheehy GMC today at 10312 Auto Place Hagerstown MD 21740 or call to schedule a test drive!

    DETAILS

    Stock
    		 Z86230S
    VIN
    		 3GTU9EETXMG243761
    Dealer
    		 Sheehy GMC of Hagerstown
    Type
    		 Used
    Year
    		 2021
    Make
    		 GMC
    Model
    		 Sierra 1500
    Mileage
    		 115,000
    Certified
    		 No
    Trim
    		 AT4
    Body
    		 Crew Cab Pickup
    Body Style
    		 Crew Cab Pickup
    Transmission
    		 10-SPEED AUTOMATIC, ELECTRONICALLY CONTROLLED
    Cylinders
    		 6
    Drivetrain
    		 Four Wheel Drive
    Fuel Type
    		 Diesel Fuel
    Exterior Color
    		 Satin Steel Metallic
    Interior Color
    		 Jet Black with Kalahari accents
    EPA City
    		 22
    EPA Highway
    		 26
    Portions of the data provided are © 2026 Autodata, Inc. dba ChromeData
    Open Recall Look-Up

    EQUIPMENT DETAIL

    Generic
    • 4G LTE Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
    • Air conditioning, dual-zone automatic climate control
    • Air filter, heavy-duty
    • Air vents, rear
    • 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.)
    • Alternator, 170 amps (Included and only available with (L84) 5.3L EcoTec3 V8 engine or (L87) 6.2L EcoTec3 V8 engine. Not available with (LM2) Duramax 3.0L Turbo-Diesel I6 engine.)
    • Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted
    • Audio system feature, 6-speaker system
    • Auto-locking rear differential
    • Automatic Stop/Start (Standard on vehicles built before 6-7-2021. Most vehicles built on or after 6-7-2021 that are equipped with a V8 engine and (MQB) 10-speed automatic transmission will have (NSS) Not Equipped with Automatic Stop/Start, which removes Automatic Stop/Start and its content. See dealer for details)
    • Battery, heavy-duty 730 cold-cranking amps/80 Amp-hr, maintenance-free with rundown protection and retained accessory power (Included and only available with (L84) 5.3L EcoTec3 V8 engine, (L3B) 2.7L Turbo engine and (L87) 6.2L EcoTec3 V8 engine.)
    • Bed Liner, Spray-on Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel) (AT4 logo replaces GMC logo. Deleted with (PCP) AT4 CarbonPro Edition. Double Cab and Crew Cab models are available with Ship Thru codes (VBE), (VCO), (VDT), (VYC) or (VYS).)
    • Brake lining wear indicator
    • Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
    • Bumper, front, body-color lower (Front bumper color will be high gloss black.)
    • Bumper, rear body-color with corner steps
    • Capless Fuel Fill
    • Cargo tie downs (12), fixed, rated at 500 lbs per corner
    • Center Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
    • Compass, located in instrument cluster
    • Cooling, auxiliary external transmission oil cooler (Not available with (LM2) Duramax 3.0L Turbo-Diesel I6 engine.)
    • Cooling, external engine oil cooler (Not available with (LM2) Duramax 3.0L Turbo-Diesel I6 engine.)
    • CornerStep, rear bumper
    • Door handles, body-color
    • Driver Information Center, 4.2" diagonal color display includes driver personalization
    • Exhaust, aluminized stainless-steel muffler and tailpipe
    • Exhaust, dual with premium tips (With (PCP) AT4 CarbonPro Edition the exhaust tips will be black.)
    • Exterior Temperature Display, located in radio display
    • Floor covering, color-keyed carpeting
    • Fog lamps, LED
    • Four wheel drive
    • Frame, fully-boxed, hydroformed front section
    • Glass, deep-tinted
    • GMC Connected Access capable (Subject to terms. See onstar.com or dealer for details.)
    • Grille (Body-color surround with high gloss Black mesh and Black chrome inserts. With (PCP) AT4 CarbonPro Edition the grille will have a unique grille surround with Black Chrome finish.)
    • GVWR, 7000 lbs. (3175 kg) (Requires Crew Cab model with (L84) 5.3L EcoTec3 V8 engine or (L87) 6.2L EcoTec3 V8 engine.)
    • HD Radio (Standard on vehicles built before 7-12-2021. Certain vehicles built on or after 7-12-2021 will include (RG0) Not Equipped with HD Radio, which removes (U2L) HD Radio. See dealer for details.)
    • Hill Descent Control
    • Hitch Guidance
    • In-vehicle Trailering App, System includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder and trailer electrical diagnostics
    • Instrument cluster, 6-gauge cluster featuring speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure
    • Lamps, cargo area, cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel
    • LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob
    • Mirror caps, high gloss Black (Deleted with (DQS) outside power adjustable vertical trailering mirrors and mirror caps will be chrome.)
    • Pickup bed
    • 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)
    • ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (U1D) In-vehicle Trailering App
    • Rear axle, 3.23 ratio
    • Rear seat reminder
    • Recovery hooks, Red
    • Remote vehicle starter system
    • Seat adjuster, driver 10-way power including lumbar
    • Seat adjuster, passenger 10-way power including lumbar
    • Seat, Up-level Rear with Storage Package, 60/40 folding bench for Crew Cab models, 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)
    • Skid plates
    • StabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist
    • Steering column, lock control, electrical
    • Steering column, manual Tilt-Wheel and telescoping
    • Steering wheel audio controls
    • Steering wheel, heated
    • Steering wheel, leather-wrapped
    • Steering, Electric Power Steering (EPS) assist, rack-and-pinion
    • Suspension, Off-Road with 2" factory installed lift and monotube shocks
    • 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
    • Taillamps, LED signature taillight with LED stop and reverse light
    • 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
    • Theft-deterrent system, unauthorized entry
    • Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
    • Trailer brake controller, integrated
    • Trailering Package includes trailer hitch, 7-pin and 4-pin connectors and (CTT) Hitch Guidance
    • Transfer case, two-speed, electronic Autotrac with push button control (4WD models only)
    • USB ports, dual, charge-only (2nd row)
    • Wheel, 17" x 8" (43.2 cm x 20.3 cm) full-size, steel spare
    • Wheelhouse liners, rear
    Show more Show less
    Options
    • ADAPTIVE CRUISE CONTROL
    • ALTERNATOR 220 AMPS
    • AT4 PREFERRED PACKAGE
    • AT4 VALUE PACKAGE
    • AUDIO SYSTEM PREMIUM GMC INFOTAINMENT SYSTEM WITH NAVIGATION AND 8" DIAGONAL COLOR TOUCH-SCREEN INCLUDES MULTI-TOUCH DISPLAY AM/FM STEREO
    • AUTOMATIC EMERGENCY BRAKING
    • BED VIEW CAMERA
    • BOSE SOUND SYSTEM PREMIUM 7-SPEAKER SYSTEM
    • DRIVER ALERT PACKAGE I
    • DRIVER ALERT PACKAGE II
    • DRIVER INFORMATION CENTER ENHANCED 8" DIAGONAL MULTICOLOR DIGITAL DISPLAY
    • EMISSIONS CONNECTICUT DELAWARE MAINE MARYLAND MASSACHUSETTS NEW JERSEY NEW YORK OREGON PENNSYLVANIA RHODE ISLAND VERMONT AND WASHINGTON STATE REQUIREMENTS
    • ENGINE BLOCK HEATER
    • ENGINE DURAMAX 3.0L TURBO-DIESEL I6
    • FOLLOWING DISTANCE INDICATOR
    • FORWARD COLLISION ALERT
    • FRONT AND REAR PARK ASSIST ULTRASONIC
    • FRONT PEDESTRIAN BRAKING
    • GVWR 7100 LBS. (3221 KG)
    • HD SURROUND VISION WITH TWO TRAILER VIEW CAMERA PROVISIONS
    • INTELLIBEAM AUTOMATIC HIGH BEAM ON/OFF
    • JET BLACK WITH KALAHARI ACCENTS PERFORATED LEATHER FRONT SEAT TRIM
    • LANE CHANGE ALERT
    • LANE KEEP ASSIST
    • LICENSE PLATE KIT FRONT
    • LPO WHEEL LOCKS SET OF 4
    • MULTICOLOR 15" DIAGONAL HEAD-UP DISPLAY
    • REAR AXLE 3.23 RATIO
    • REAR CAMERA MIRROR INSIDE REARVIEW AUTO-DIMMING
    • REAR CROSS TRAFFIC ALERT
    • SAFETY ALERT SEAT
    • SATIN STEEL METALLIC
    • SEATS FRONT BUCKET
    • SEATS HEATED SECOND ROW OUTBOARD SEATS
    • SUNROOF POWER
    • TECHNOLOGY PACKAGE
    • TIRE SPARE 255/80R17SL ALL-SEASON BLACKWALL
    • TIRES 275/60R20SL ALL-TERRAIN BLACKWALL
    • TRANSMISSION 10-SPEED AUTOMATIC ELECTRONICALLY CONTROLLED
    • UNIVERSAL HOME REMOTE
    • WHEELS 20" X 9" (50.8 CM X 22.9 CM) MACHINED ALUMINUM WITH CARBON GREY METALLIC ACCENTS
    • WINDOW POWER REAR SLIDING WITH REAR DEFOGGER
    • WIRELESS CHARGING
    Show more Show less

    We keep it Easy at Sheehy with straightforward online pricing. We do not add additional reconditioning or certification fees to our posted online pricing; a majority of our competitors will add these fees to their prices. We mention this as a courtesy to help you get accurate price quotes and avoid surprises while researching your new or used vehicle. Price plus taxes and tags. ( Processing fee is included in our Sheehy Easy Price. )  Additional fees may apply to new vehicles transferred from other locations. A $100 transfer fee will be added to the price of all used vehicles transferred in from other locations. An additional $100 will be applied to vehicles transferred over 50 miles. Sheehy Value pre-owned vehicles are NON-transferable. While every reasonable effort is made to ensure the accuracy of this information, we are not responsible for any errors or omissions contained on these pages. Please verify any information in question with Sheehy Auto Stores before purchase. All vehicles are subject to prior sale. Quoted price available on in-stock units only.  Financing is subject to approved credit through a designated lender. Some manufacturer rebates are not compatible with manufacturer finance offers. Manufacturer Rebates and incentives are valid during the time period set by the manufacturer and are subject to change without notice. Additional manufacturer rebates and incentives may apply to those who qualify and may lower the sales price. Home/office vehicle delivery up to 100 miles. See dealer for details. 

    Wholesale to Public: Sheehy Auto Stores Wholesale to the Public offers affordable transportation solutions. Wholesale to Public vehicles have undergone the Virginia State Safety inspection only. You are entitled to a test drive and a pre-purchase inspection by your own mechanic. Wholesale to Public vehicles are likely to have mechanical and or cosmetic defects. Financing is available on approved credit; a down payment may be required. Wholesale to Public vehicles are sold strictly “AS IS”. Wholesale to Public vehicles are likely to have multiple and/or cosmetic defects. The term “AS IS” means that there is NO expressed or implied warranty. There is no return policy for Wholesale to Public vehicles. - NOT TRANSFERABLE.

    *These estimates reflect new EPA methods beginning with 2008 models. Your actual mileage will vary depending on how you drive and maintain your vehicle. Actual mileage will vary with options, driving conditions, driving habits, and vehicle conditions. Mileage estimates may be derived from the previous year's model.