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  1. Franklin Ford
  2. Used Vehicles
  3. 2021
  4. GMC
  5. Sierra 1500
  6. AT4

2021 GMC Sierra 1500 AT4

Available
  • $4,000 SAVINGS
    $37,996 FRANKLIN PRICE
  • Retail Price: $41,996
  • Savings: -$4,000
  • Buy For: $37,996
  • Franklin Price W/ Documentary Preparation $38,495

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Vehicle Information

VIN: 3GTU9EET5MG393079
Stock #: B3807
Model Code: TK10543
  • Body Style 4D Crew Cab
  • Exterior Color Onyx Black
  • Interior Color Jet Black With Kalahari Accents
  • Mileage 84,285
  • Fuel Economy
    City/Highway 22/26 MPG
  • Engine 6 Cyl - 3 L
  • Transmission 10-Speed Automatic
  • Fuel Type Diesel

Highlighted Features

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

Dealer Comments

Recent Arrival! Clean CARFAX

2021 GMC Sierra 1500 AT4 finished in striking Onyx Black with a premium Jet Black leather interior featuring exclusive Kalahari accents. This premium off-road truck perfectly combines rugged capability with luxury refinement. It comes factory-equipped with a 2-inch suspension lift, Rancho monotube shocks, and a dual-outlet exhaust system. The exterior commands attention with its dark-chrome grille, signature red vertical recovery hooks, and high-clearance steps. Inside, the cabin delivers an upscale experience with heated and ventilated front bucket seats, heated rear outboard seats, and distinct Kalahari color-blocked inserts. The tech-forward interior features a premium GMC infotainment system with an 8-inch touchscreen, wireless Apple CarPlay, wireless Android Auto, and a Bose premium sound system. It also includes the highly versatile Multi Pro Tailgate, making loading and working incredibly efficient. With its robust four-wheel-drive system, selectable traction select modes, and integrated trailer brake controller, this Sierra AT4 is fully prepared for any terrain or heavy tow job. Would you like to specify the engine type to highlight whether it has the 6.2L V8 gas engine or the 3.0L Duramax Turbo-Diesel? I can also include the exact mileage and price to make the vehicle listing complete for online buyers. Alternatively, let me know if you want to mention specific packages like the Technology Package with the rear camera mirror or the AT4 Carbon Pro Edition.


As a leading Ford dealer in the Greater Boston area for more than 70 years, Jack Madden Ford has one of the best selections of used cars, trucks & SUV's to choose from. Among our terrific selection, you will find most are Certified Pre-Owned and have undergone a rigorous inspection to meet the Blue and Gold Certification standard of Ford. Call us today @ 781-317-6859 to schedule a test drive or simply stop in and see us in person at Jack Madden Ford, conveniently located at 825 Providence Hwy Norwood MA 02062.

Eligible Benefits

View CARFAX report

All Features

  • Trailering Package includes trailer hitch, 7-pin and 4-pin connectors and (CTT) Hitch Guidance
  • ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (U1D) In-vehicle Trailering App
  • Rear axle, 3.23 ratio
  • Pickup bed
  • Air filter, heavy-duty
  • Hill Descent Control
  • Auto-locking rear differential
  • Transfer case, two-speed, electronic Autotrac with push button control (4WD models only)
  • Suspension, Off-Road with 2" factory installed lift and monotube shocks
  • Four wheel drive
  • Frame, fully-boxed, hydroformed front section
  • Trailer brake controller, integrated
  • Recovery hooks, Red
  • Skid Plates
  • Cargo tie downs (12), fixed, rated at 500 lbs per corner
  • Steering, Electric Power Steering (EPS) assist, rack-and-pinion
  • Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
  • Capless Fuel Fill
  • Exhaust, dual with premium tips (With (PCP) AT4 CarbonPro Edition the exhaust tips will be black.)
  • Exhaust, aluminized stainless-steel muffler and tailpipe
  • Wheels, 18" x 8.5" (45.7 cm x 21.6 cm) machined aluminum with Dark Grey accents
  • Tires, 265/65R18SL all-terrain, blackwall
  • Tire, spare 265/70R17SL all-season, blackwall
  • Wheel, 17" x 8" (43.2 cm x 20.3 cm) full-size, steel spare
  • Wheelhouse liners, rear
  • Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
  • Bumper, front, body-color lower (Front bumper color will be high gloss black.)
  • Bumper, rear body-color with corner steps
  • CornerStep, rear bumper
  • 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.)
  • Headlamps, LED reflector (high intensity) with LED turn signals and LED signature Daytime Running Lamps
  • Fog lamps, LED
  • Taillamps, LED signature taillight with LED stop and reverse light
  • Mirrors, outside heated power-adjustable, power-folding and driver-side auto-dimming puddle lamps, side perimeter lighting and memory
  • Mirror caps, high gloss Black (Deleted with (DQS) outside power adjustable vertical trailering mirrors and mirror caps will be chrome.)
  • Glass, deep-tinted
  • 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
  • Tailgate, GMC MultiPro Tailgate with six functional load/access features
  • Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
  • Tailgate and bed rail protection caps, top
  • Door handles, body-color
  • 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).)
  • Audio system, Premium GMC Infotainment System with 8" diagonal color touch-screen, includes 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, advanced voice recognition, in-vehicle apps, personalized profiles for infotainment and vehicle settings (Note: (PZ8) Hitch Guidance with hitch view is included with trim. Includes SiriusXM with 360L.)
  • 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.)
  • SiriusXM Radio
  • SiriusXM with 360L Equipped with SiriusXM with 360L. Enjoy a trial subscription of the All Access package for the full 360L experience, with a greater variety of SiriusXM content, a more personalized experience and easier navigation. With the All Access package, you can also enjoy your favorites everywhere you go, with the SiriusXM app, online and at home on compatible connected devices. (IMPORTANT: The SiriusXM radio trial package is not provided on vehicles that are ordered for Fleet Daily Rental ("FDR") use. If you decide to continue service after your trial, the subscription plan you choose will automatically renew thereafter and you will be charged according to your chosen payment method at then-current rates. Fees and taxes apply. See the SiriusXM Customer Agreement at www.siriusxm.com for complete terms and how to cancel. All fees, content, features, and availability are subject to change. GM connected vehicle services vary by vehicle model and require active service plan, working electrical system, cell reception and GPS signal. See onstar.com for details and limitations.)
  • Audio system feature, 6-speaker system
  • Bluetooth for phone connectivity to vehicle infotainment system
  • Wireless Phone Projection, for Apple CarPlay and Android Auto
  • Steering wheel audio controls
  • 4G LTE Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
  • Seats, front bucket with center console
  • Seat adjuster, driver 10-way power including lumbar
  • Seat adjuster, passenger 10-way power including lumbar
  • Seating, heated driver and front outboard passenger
  • Driver memory recalls driver "presets" for power driver seat and outside mirrors
  • Seats, ventilated driver and front passenger
  • 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)
  • Center Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
  • Floor covering, color-keyed carpeting
  • Premium Floor Liners with removable carpet insert, front
  • Premium Floor Liners with removable carpet insert, rear
  • Steering column, manual Tilt-Wheel and telescoping
  • Steering wheel, leather-wrapped
  • Steering wheel, heated
  • Driver Information Center, 4.2" diagonal color display includes driver personalization
  • In-vehicle Trailering App, System includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder and trailer electrical diagnostics
  • Compass, located in instrument cluster
  • Exterior Temperature Display, located in radio display
  • Brake lining wear indicator
  • Windows, power front, drivers express up/down
  • Window, power front, passenger express up/down
  • Windows, power rear, express down
  • Door locks, power
  • Keyless Open and Start
  • Remote vehicle starter system
  • Cruise control, steering wheel-mounted
  • Theft-deterrent system, unauthorized entry
  • Steering column, lock control, electrical
  • USB ports, 2 (first row) located on instrument panel
  • USB Ports (Inside Console with bucket seats), 2 also includes 1 SD card reader and auxiliary jack
  • Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
  • Power outlet, front auxiliary, 12-volt
  • USB ports, dual, charge-only (2nd row)
  • Power outlet, rear auxiliary, 12-volt
  • Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
  • Air conditioning, dual-zone automatic climate control
  • Air vents, rear
  • Defogger, rear-window electric
  • Mirror, inside rearview auto-dimming
  • Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted
  • GMC Connected Access capable (Subject to terms. See onstar.com or dealer for details.)
  • StabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist
  • Daytime Running Lamps, LED signature lighting
  • 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.)
  • OnStar and GMC connected services capable (Terms and limitations apply. See onstar.com or dealer for details.)
  • Hitch Guidance with Hitch View with image adjustment, Pan/Zoom/Tilt
  • Hitch Guidance
  • HD Rear Vision Camera
  • 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 with Tire Fill Alert (does not apply to spare tire)
  • Rear Seat Reminder
  • AT4 Preferred Package
  • Preferred Equipment Group 4SB
  • Trailering Package
  • 6 Speakers
  • 6-Speaker Audio System Feature
  • AM/FM radio: SiriusXM with 360L
  • Premium audio system: GMC Infotainment System
  • Premium Bose 7-Speaker Sound System
  • Radio data system
  • Radio: Premium GMC Infotainment Sys w/Multi-Touch
  • Radio: Premium GMC Infotainment Sys w/Navigation
  • SiriusXM w/360L
  • Steering Wheel Audio Controls
  • Air Conditioning
  • Automatic temperature control
  • Electric Rear-Window Defogger
  • Front dual zone A/C
  • Rear window defroster
  • 12-Volt Rear Auxiliary Power Outlet
  • 120-Volt Bed Mounted Power Outlet
  • 120-Volt Instrument Panel 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
  • Remote keyless entry
  • Remote Vehicle Starter System
  • Steering wheel mounted audio controls
  • Universal Home Remote
  • Auto-Locking Rear Differential
  • Electrical Lock Control Steering Column
  • Manual Tilt-Wheel & Telescoping Steering Column
  • Off-Road Suspension
  • Speed-sensing steering
  • Traction control
  • 4-Wheel Disc Brakes
  • ABS brakes
  • Dual front impact airbags
  • Dual front side impact airbags
  • 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
  • Delay-off headlights
  • Front fog lights
  • Fully automatic headlights
  • Panic alarm
  • Security system
  • Theft Deterrent System (Unauthorized Entry)
  • Speed control
  • 170 Amp Alternator
  • 220 Amp Alternator
  • Auxiliary External Transmission Oil Cooler
  • Engine Block Heater
  • Heavy-Duty Air Filter
  • Auto-dimming door mirrors
  • Black Sport Step (LPO)
  • Body-Color Surround Grille
  • Bumpers: body-color
  • Front License Plate Kit
  • Heated door mirrors
  • LED Cargo Area Lighting
  • Power door mirrors
  • ProGrade Trailering System
  • Rear step bumper
  • Rear Wheelhouse Liners
  • Red Illuminated Front GMC Emblem (LPO)
  • Spray-On Pickup Bed Liner w/AT4 Logo
  • 2 USB Ports
  • 2 USB Ports (1st Row)
  • 4.2" Diagonal Color Display Driver Info Center
  • 4G LTE Wi-Fi Hotspot Capable
  • Apple CarPlay/Android Auto
  • Auto-dimming Rear-View mirror
  • Color-Keyed Carpeting Floor Covering
  • Compass
  • Driver door bin
  • Driver vanity mirror
  • Floor-Mounted Center Console
  • Front Prem Floor Liners w/Removable Carpet Insert
  • Front reading lights
  • GMC Connected Access Capable
  • HD Rear Vision Camera
  • Heated steering wheel
  • Illuminated entry
  • OnStar & GMC Connected Services Capable
  • Outside temperature display
  • Overhead console
  • Passenger vanity mirror
  • Rear Dual USB Charging-Only Ports
  • Rear Prem Floor Liners w/Removable Carpet Insert
  • Rear reading lights
  • Rear seat center armrest
  • Tachometer
  • Telescoping steering wheel
  • Tilt steering wheel
  • Trip computer
  • Voltmeter
  • 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
  • Perforated Leather-Appointed Front Seat Trim
  • Power passenger seat
  • Split folding rear seat
  • Ventilated Driver & Front Passenger Seats
  • Ventilated front seats
  • Passenger door bin
  • Hitch Guidance
  • Hitch Guidance w/Hitch View
  • In-Vehicle Trailering App
  • Integrated Trailer Brake Controller
  • Red Recovery Hooks
  • 18" x 8.5" Machined Aluminum Wheels
  • Alloy wheels
  • Wheel Locks (Set of 4) (LPO)
  • Wheels: 20" x 9" Machined Aluminum
  • Deep-Tinted Glass
  • Power Sliding Rear Window w/Rear Defogger
  • Variably intermittent wipers
  • 3.23 Rear Axle Ratio
  • 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): 13.5 x 1.18
    • Rear Brake Rotor Diam x Thickness (in): 13.6 x 0.79
  • Cargo Area Dimensions
    • Cargo Box (Area) Height (in): 22.4
    • Cargo Box Length : Floor (in)
    • Cargo Box Width : Floor (in)
    • Cargo Box Width : Top, Rear (in)
    • Cargo Box Width : Wheelhousings (in)
    • Cargo Volume (ft³): 62.9
  • 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
    • Ground Clearance, Front (in): 10.88
    • Ground Clearance, Rear (in): 10.88
    • Height, Overall (in): 78.35
    • Length, Overall (in): 231.72
    • Wheelbase (in): 147.53
    • Width, Max w/o mirrors (in): 81.24
  • Frame
    • Frame Type: Hydroformed
  • Fuel Tank
    • Fuel Tank Capacity, Approx (gal): 24
  • 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): 65.16
  • Mileage
    • EPA Fuel Economy Est - City (MPG): 22
    • EPA Fuel Economy Est - Hwy (MPG): 26
    • Fuel Economy Est-Combined (MPG): 24
  • Steering
    • Steering Type: Electric Rack & Pinion
    • Turning Diameter - Curb to Curb (ft): 46.9
  • Summary
    • Body Code: E63
    • Body Style: Crew Cab Pickup
    • Vehicle Name: GMC Sierra 1500
  • Suspension
    • Axle Capacity - Front (lbs): 3800
    • Axle Capacity - Rear (lbs): 3800
    • Axle Ratio (:1) - Front: 3.23
    • Axle Ratio (:1) - Rear: 3.23
    • Shock Absorber Diameter - Front (mm): 50
    • Shock Absorber Diameter - Rear (mm): 51
    • Spring Capacity - Front (lbs): 3800
    • Spring Capacity - Rear (lbs): 3850
    • Stabilizer Bar Diameter - Front (in): 1.30
    • Suspension Type - Front: Independent
    • Suspension Type - Rear: Solid Axle
  • Tires
    • Front Tire Order Code: QAE
    • Front Tire Size: 275/60R20SL
    • Rear Tire Order Code: QAE
    • Rear Tire Size: 275/60R20SL
    • Revolutions/Mile : 45 mph - Front
    • Revolutions/Mile : 45 mph - Rear
    • Revolutions/Mile : 45 mph - Spare
    • Spare Tire Order Code: QAQ
    • Spare Tire Size: 255/80R17SL
  • Trailering
    • Dead Weight Hitch - Max Tongue Wt. (lbs): 500
    • Dead Weight Hitch - Max Trailer Wt. (lbs): 5000
    • Fifth Wheel Hitch - Max Tongue Wt. (lbs): 1675
    • Fifth Wheel Hitch - Max Trailer Wt. (lbs): 6700
    • Maximum Trailering Capacity (lbs): 9200
    • Wt Distributing Hitch - Max Tongue Wt. (lbs): 880
    • Wt Distributing Hitch - Max Trailer Wt. (lbs): 8800
  • Weight Information
    • Curb Weight - Front (lbs): 2839
    • Curb Weight - Rear (lbs): 1976
    • Gross Axle Wt Rating - Front (lbs): 3800
    • Gross Axle Wt Rating - Rear (lbs): 3800
    • Gross Combined Wt Rating (lbs): 15000
    • Gross Vehicle Weight Rating Cap (lbs): 7100
  • Wheels
    • Front Wheel Material: Aluminum
    • Front Wheel Size (in): 20 x 9.0
    • Rear Wheel Material: Aluminum
    • Rear Wheel Size (in): 20 x 9.0
    • Spare Wheel Material: Steel
    • Spare Wheel Size (in): 17 x
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May not represent actual vehicle. (Options, colors, trim and body style may vary)

Although every reasonable effort has been made to ensure the accuracy of the information contained on this site, absolute accuracy cannot be guaranteed. This site, and all information and materials appearing on it, are presented to the user "as is" without warranty of any kind, either express or implied. All vehicles are subject to prior sale. Price does not include applicable tax, title, and license charges. ‡Vehicles shown at different locations are not currently in our inventory (Not in Stock) but can be made available to you at our location within a reasonable date from the time of your request, not to exceed one week.