LaFontaine Buick GMC St. Clair

2020 GMC Sierra 1500 AT4



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Vehicle Information

VIN: 1GTP9EEL4LZ349490
Stock #: 6I327S
  • Condition Used
  • Body Style 4D Crew Cab
  • Exterior Color Onyx Black
  • Interior Color Jet Black W/Kalahari Acce
  • Mileage 94,783
  • Fuel Economy
    City/Highway 15/19 MPG
  • Engine 8
  • Transmission 10-Speed Automatic
  • Fuel Type Gasoline

Highlighted Features

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

Dealer Comments

2020 GMC Sierra 1500 AT4 Turn heads and take on your next adventure in this 2020 GMC Sierra 1500 AT4, finished in a bold Onyx Black exterior. Combining rugged capability with premium comfort and distinctive styling, this full-size pickup is designed for drivers who want a truck that works hard while delivering a refined driving experience. The AT4 trim stands out with its aggressive exterior design, signature black chrome accents, distinctive AT4 badging, and rugged all-terrain tires. Its factory 2-inch suspension lift, off-road-tuned suspension, skid plates, and four-wheel-drive capability make it well-suited for tackling challenging terrain, outdoor adventures, and Michigan's changing road conditions. Inside, the Sierra AT4 offers a spacious and upscale cabin with premium materials, comfortable seating, and thoughtful storage solutions. The AT4's distinctive interior features leather-appointed seating surfaces, heated and ventilated front seats, a heated steering wheel, and dual-zone automatic climate control for year-round comfort. The roomy Crew Cab design provides generous passenger space, making it a great choice for work, family outings, and weekend getaways. Stay connected with the GMC infotainment system, featuring a touchscreen display, Apple CarPlay, Android Auto, Bluetooth® connectivity, and convenient steering-wheel-mounted controls. Additional features such as a rearview camera, keyless entry, and remote start add convenience to your everyday driving experience. Whether you're hauling equipment, exploring the outdoors, or cruising around town, this 2020 GMC Sierra 1500 AT4 delivers an impressive combination of capability, comfort, and bold styling. Experience everything this Onyx Black Sierra has to offer at LaFontaine Ford St. Clair! Vehicle sales are limited to Michigan transactions only. Please contact us directly for eligibility details and availability..

Onyx Black 2020 GMC Sierra 1500


WE ARE THE HOME OF THE FAMILY DEAL! ALL VEHICLES ARE FULLY INSPECTED AND READY FOR IMMEDIATE DELIVERY! IF YOU DON'T SEE WHAT YOU'RE LOOKING FOR LET US KNOW BECAUSE WE HAVE ACCESS TO OVER 1400 PRE OWNED VEHICLES IN OUR COLLECTION OF DEALERSHIPS!

Spring Used Car Sales Event happening all month long! Great deals happening all month long! See your LaFontaine Ford St. Clair Sales Representative for more information. We use state-of-the-art software to price our vehicles to be the most competitive in the market. If you have found a better value, let us know about it. We would love the opportunity to keep giving the best values in the market. Be our guest at Lafontaine Ford of Saint Clair, and put us to work for you. NOTE: All Equipment Listed May Not Be Available. NOT ALL USED VEHICLES WILL QUALIFY FOR FINANCING. SEE DEALER FOR DETAILS. We only sell new and pre-owned vehicles to customers purchasing within the state of Michigan. While third-party advertising websites may display our inventory in other states, vehicle sales are limited to Michigan transactions only. Please contact us directly for eligibility details and availability.

All Features

  • AT4 Preferred Package
  • Preferred Equipment Group 4SB
  • Trailering Package
  • 6 Speakers
  • 6-Speaker Audio System Feature
  • AM/FM radio: SiriusXM with 360L
  • HD Radio
  • 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
  • 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
  • Heavy-Duty Rear Locking Differential
  • 170 Amp Alternator
  • Auxiliary External Transmission Oil Cooler
  • 6" Rectangular Black Tubular Assist Steps (LPO)
  • Auto-dimming door mirrors
  • Body-Color Surround Grille
  • Bumpers: body-color
  • Front & Rear Black Molded Splash Guards (LPO)
  • Heated door mirrors
  • High Gloss Black Mirror Caps
  • High-Capacity Air Filter
  • LED Cargo Area Lighting
  • Power door mirrors
  • ProGrade Trailering System
  • Rear step bumper
  • Rear Wheelhouse Liners
  • 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
  • All-Weather Floor Liners w/AT4 Logo (LPO)
  • 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 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 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
  • Heated rear 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
  • Turn heads and take on your next adventure in this 2020 GMC Sierra 1500 AT4, finished in a bold Onyx Black exterior. Combining rugged capability with premium comfort and distinctive styling, this full-size pickup is designed for drivers who want a truck that works hard while delivering a refined driving experience. The AT4 trim stands out with its aggressive exterior design, signature black chrome accents, distinctive AT4 badging, and rugged all-terrain tires. Its factory 2-inch suspension lift, off-road-tuned suspension, skid plates, and four-wheel-drive capability make it well-suited for tackling challenging terrain, outdoor adventures, and Michigan's changing road conditions. Inside, the Sierra AT4 offers a spacious and upscale cabin with premium materials, comfortable seating, and thoughtful storage solutions. The AT4's distinctive interior features leather-appointed seating surfaces, heated and ventilated front seats, a heated steering wheel, and dual-zone automatic climate control for year-round comfort. The roomy Crew Cab design provides generous passenger space, making it a great choice for work, family outings, and weekend getaways. Stay connected with the GMC infotainment system, featuring a touchscreen display, Apple CarPlay, Android Auto, Bluetooth® connectivity, and convenient steering-wheel-mounted controls. Additional features such as a rearview camera, keyless entry, and remote start add convenience to your everyday driving experience. Whether you're hauling equipment, exploring the outdoors, or cruising around town, this 2020 GMC Sierra 1500 AT4 delivers an impressive combination of capability, comfort, and bold styling. Experience everything this Onyx Black Sierra has to offer at LaFontaine Ford St. Clair! Vehicle sales are limited to Michigan transactions only. Please contact us directly for eligibility details and availability.
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May not represent actual vehicle. (Options, colors, trim and body style may vary)

The Manufacturer's Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.