Vehicle Details
2020 GMC Sierra 2500 AT4 4WD â" V8 6.6L Diesel, located in Gadsden AL. This rugged, capable pickup pairs heavy-duty performance with upscale comfort, delivering the power you need and the features you want at the best price in the area. The stout V8 6.6L Duramax diesel provides exceptional towing and hauling capability while maintaining dependable long-haul efficiency. Four-wheel drive and the AT4 off-road package give confidence on rough terrain and in adverse weather. Inside, premium leather seats and a thoughtfully designed cabin keep drivers and passengers comfortable on every trip. Built-in navigation simplifies route planning, while Hands-Free Bluetooth keeps calls and media connected safely. Advanced safety features include Cross-Traffic Alert, enhancing awareness when backing out of crowded lots. This GMC Sierra arrives with a CARFAX Clean Report, reflecting its well-documented service history and ownership record. This 2020 GMC Sierra 2500 AT4 is ideal for contractors, outdoor enthusiasts, or anyone needing serious capability without sacrificing refinement. Located in Gadsden AL, this truck is ready for immediate test drives and inspection. With its combination of diesel power, 4WD performance, premium interior amenities, and a transparent vehicle history, this GMC Sierra represents outstanding value. Contact us to schedule a viewing and confirm that this is the best-priced heavy-duty truck available in the region.
Equipment
This model features a hands-free Bluetooth phone system. See what's behind you with the back up camera on this model. You'll never again be lost in a crowded city or a country region with the navigation system on this 2020 GMC Sierra 2500. The leather seats in it are a must for buyers looking for comfort, durability, and style. This 3/4 ton pickup offers Android Auto for seamless smartphone integration. Our dealership has already run the CARFAX report and it is clean. A clean CARFAX is a great asset for resale value in the future. It's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. Engulf yourself with the crystal clear sound of a BOSE sound system in this GMC Sierra. This vehicle features steering wheel audio controls. Good News! This certified CARFAX 1-owner vehicle has only had one owner before you. This GMC Sierra's Cross-Traffic Alert: Safeguarding you from unexpected traffic when reversing.
Packages
Driver Alert Package I: Ultrasonic Front and Rear Park Assist; Rear Cross Traffic Alert; Lane Change Alert with Side Blind Zone Alert; Perimeter Lighting. Driver Alert Package II: Forward Collision Alert; Following Distance Indicator; Automatic Emergency Braking; Safety Alert Seat; IntelliBeam Automatic High Beam On/off; Lane Departure Warning. AT4 Preferred Package: Bose Premium 7 Speaker Sound System; Power Sliding Rear Window with Defogger; LED Smoked Amber Roof Marker Lamps; Wireless Charging; Universal Home Remote; Premium GMC Infotainment System Radio with Navigation. AT4 Premium Package: 20 6-Spoke Bright Machined Aluminum Wheels. Technology Package: 8 Multicolor Driver Instrument Info Display; HD Surround Vision with 2 Trailer View Camera Provisions; Multicolor 15 Diagonal Head-Up Display; Bed View Camera; Rear Camera Mirror. Preferred Equipment Group 4SB: HD Rear Vision Camera; LED Cargo Area Lighting; Remote Vehicle Starter System; 2 USB Ports (1st Row); Electric Rear-Window Defogger; Floor-Mounted Center Console; Unauthorized Entry Theft-Deterrent System; Painted Black Surround Grille; Compass Located in Instrument Cluster; 4.2 Diagonal Color Display Driver Info Center; Electrical Lock Control Steering Column; 120-Volt Instrument Panel Power Outlet; Heated Driver and Front Outboard Passenger Seats; X31 Off-Road Package; Steering Wheel Audio Controls; OnStar and GMC Connected Services Capable; 120-Volt Bed Mounted Power Outlet; Heated 2nd Row Outboard Seats; Power Front Passenger Windows with Express Up/down; 2-Speed Active Transfer Case; Deep-Tinted Glass; 1st and 2nd Rows All-Weather Floor Liners; Spray-On Pickup Box Bed Liner with AT4 Logo; Power Rear Windows with Express Down; Red Recovery Hooks; Integrated Trailer Brake Controller; Power Windows with Driver Express Up/down; Heated and Ventilated Front Bucket Seats; Manual Tilt-Wheel/telescoping Steering Column; 2nd Row Dual USB Charge-Only Ports; Keyless Open and Start; ProGrade Trailering System; Rear Wheelhouse Liners; 12-Volt Rear Auxiliary Power Outlet; 2 USB Ports; Power Door Locks. Gooseneck/5th Wheel Package: Gooseneck/5th Wheel Prep Package. 20 6-Spoke Bright Machined Aluminum Wheels. Power Sunroof. Off-Road Assist Steps. Bed View Camera. LT275/65R20 AT BW Tires. LED Smoked Amber Roof Marker Lamps. Heavy Duty Front Spring/camper Package. **Equipment listed is based on original vehicle build and subject to change. Please confirm the accuracy of the included equipment by calling the dealer prior to purchase.**
Additional Information
We understand car buying can be very stressful and take way too long! At Nissan of Gadsden we want to outperform any past experience you've had buying a vehicle. Tax, title, license, dealer fees and dealer installed addendums are extra. Internet prices cannot be combined with any other offers. See store for details. Thank you for taking the time to view our inventory, If you have any questions or need help please give us a call or send us a email. We look forward to earning your business! 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.
Pre-Owned 2020 GMCSierra AT4
- Exterior Color
- Summit White
- Interior Color
- Jet Black w/Kalahari Accents
- Odometer
- 95,739 miles
- Body/Seating
- Crew Cab/5 seats
- Transmission
- 10-speed automatic
- Drivetrain
- 4WD
- Engine
- V8, 6.6L
- VIN
- 1GT49PEY8LF244883
- Stock Number
- P6378
GMC
Sierra
Highlighted Features
- Leather upholstery
- Automatic temperature control
- Premium audio system
- Wireless phone connectivity
- Front dual zone A/C
- Auto-dimming rearview mirror
- Split folding rear seat
- Memory seat
- Heated front seats
- Ventilated front seats
- Perimeter/approach lights
- Remote keyless entry
Included Packages & Accessories
- Driver Alert Package I: Ultrasonic Front and Rear Park Assist; Rear Cross Traffic Alert; Lane Change Alert with Side Blind Zone Alert; Perimeter Lighting
- Driver Alert Package II: Forward Collision Alert; Following Distance Indicator; Automatic Emergency Braking; Safety Alert Seat; IntelliBeam Automatic High Beam On/off; Lane Departure Warning
- AT4 Preferred Package: Bose Premium 7 Speaker Sound System; Power Sliding Rear Window with Defogger; LED Smoked Amber Roof Marker Lamps; Wireless Charging; Universal Home Remote; Premium GMC Infotainment System Radio with Navigation
- AT4 Premium Package: 20 6-Spoke Bright Machined Aluminum Wheels
- Technology Package: 8 Multicolor Driver Instrument Info Display; HD Surround Vision with 2 Trailer View Camera Provisions; Multicolor 15 Diagonal Head-Up Display; Bed View Camera; Rear Camera Mirror
- Preferred Equipment Group 4SB: HD Rear Vision Camera; LED Cargo Area Lighting; Remote Vehicle Starter System; 2 USB Ports (1st Row); Electric Rear-Window Defogger; Floor-Mounted Center Console; Unauthorized Entry Theft-Deterrent System; Painted Black Surround Grille; Compass Located in Instrument Cluster; 4.2 Diagonal Color Display Driver Info Center; Electrical Lock Control Steering Column; 120-Volt Instrument Panel Power Outlet; Heated Driver and Front Outboard Passenger Seats; X31 Off-Road Package; Steering Wheel Audio Controls; OnStar and GMC Connected Services Capable; 120-Volt Bed Mounted Power Outlet; Heated 2nd Row Outboard Seats; Power Front Passenger Windows with Express Up/down; 2-Speed Active Transfer Case; Deep-Tinted Glass; 1st and 2nd Rows All-Weather Floor Liners; Spray-On Pickup Box Bed Liner with AT4 Logo; Power Rear Windows with Express Down; Red Recovery Hooks; Integrated Trailer Brake Controller; Power Windows with Driver Express Up/down; Heated and Ventilated Front Bucket Seats; Manual Tilt-Wheel/telescoping Steering Column; 2nd Row Dual USB Charge-Only Ports; Keyless Open and Start; ProGrade Trailering System; Rear Wheelhouse Liners; 12-Volt Rear Auxiliary Power Outlet; 2 USB Ports; Power Door Locks
- Gooseneck/5th Wheel Package: Gooseneck/5th Wheel Prep Package
- 20 6-Spoke Bright Machined Aluminum Wheels
- Power Sunroof
- Off-Road Assist Steps
- Bed View Camera
- LT275/65R20 AT BW Tires
- LED Smoked Amber Roof Marker Lamps
- Heavy Duty Front Spring/camper Package
- Apple CarPlay/Android Auto smart device mirroring
- Forward Collision Alert with Automatic Braking
- 4G LTE Wi-Fi Hotspot capable mobile hotspot internet access
- Head-up display
- Brake assist system
- Cruise control with steering wheel mounted controls
- Ventilated driver and front passenger seats
- Integrated navigation system
- Keyfob remote start
- Heated steering wheel
- Heated driver and front passenger seats
- Heated rear seats
- Leather front seat upholstery
- Primary monitor touchscreen
- Lane Departure Warning
- Rear Cross-Traffic Alert collision warning
- First-row sliding and tilting glass sunroof with express open/close activation sunshade
- Driver seat power reclining
- lumbar support
- cushion tilt
- fore/aft control and height adjustable control
- AutoTrac part and full-time 4WD
- Duramax 6.6L V-8 diesel direct injection
- intercooled turbo
- diesel
- engine with 445HP
- Front wireless smart device charging
- Teen Driver restricted driving mode/alerts
- Auxiliary camera
- Keyless Open/Keyless Start with hands-free access and push button start
- Keyfob window control
- Video-feed rearview mirror
- Bluetooth wireless audio streaming
- Hitch Guidance vehicle to trailer hitching assist
- Front mounted camera
- Right side camera
- Pickup box camera
- Left side camera
- Lane Change Alert with Side Blind Zone Alert blind spot warning
- Following Distance Indicator
- Trailer light test
- Trailer light malfunction warning
- Trailer theft alarm
- Dual-zone front climate control
- IntelliBeam auto high-beam headlights
- Immobilizer
- Bose speakers
- Bluetooth handsfree wireless device connectivity
- Trailer brake controller
- Trailer sway control
- Trailering Assist Guidelines vehicle and trailer reverse assist with visual graphic guidance only
- External memory control
- Internet radio capability
- 6 USB ports
- Power extendable trailer mirrors
- StabiliTrak w/Proactive Roll Avoidance electronic stability control system with anti-roll
Detailed Specifications
- 1-touch down
- 1-touch up
- Air conditioning
- Auto-dimming rearview mirror
- Automatic temperature control
- Driver door bin
- Driver vanity mirror
- Front beverage holders
- Front dual zone A/C
- Heated steering wheel
- Illuminated entry
- Memory seat
- 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: keyfob
- Remote keyless entry
- Speed control
- Telescoping steering wheel
- Tilt steering wheel
- Alloy wheels
- Front anti-roll bar
- Front wheel independent suspension
- Power steering
- Single rear wheels
- Speed-sensing steering
- Tires: all-terrain
- 1st row LCD monitors: 2
- AM/FM radio: SiriusXM
- Premium audio system: Premium GMC Infotainment System
- Primary LCD size: 8.0"
- Smart device integration: Apple CarPlay/Android Auto
- Steering wheel mounted audio controls
- 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
- Cylinder configuration: V-8
- Drive type: four-wheel
- Engine liters: 6.6L
- Engine location: front
- Fuel economy fuel type: gasoline
- Fuel tank capacity: 36.0gal.
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Rear locking differential
- Variable valve control
- Ground clearance (min): 257mm (10.1")
- Auto-dimming door mirrors
- Bedliner
- Bumpers: body-color
- Heated door mirrors
- Left rear passenger door: conventional
- Power door mirrors
- Rear cargo: tailgate
- Rear step bumper
- Right rear passenger: conventional
- Skid plates
- Trailer hitch receiver
- Trailer sway control
- Turn signal indicator mirrors
- Exterior body width: 2,079mm (81.8")
- Exterior height: 2,023mm (79.7")
- Exterior length: 6,352mm (250.1")
- Front headroom: 1,093mm (43.0")
- Front hiproom: 1,554mm (61.2")
- Front legroom: 1,131mm (44.5")
- Front shoulder room: 1,677mm (66.0")
- Rear headroom: 1,013mm (39.9")
- Rear hiproom: 1,530mm (60.2")
- Rear legroom: 1,102mm (43.4")
- Rear shoulder room: 1,659mm (65.3")
- Towing capacity: 6,577kg (14,500lbs)
- Turning radius: 8.0m (26.3')
- Wheelbase: 4,037mm (158.9")
- Appearance: analog
- Compass
- Delay-off headlights
- Front fog lights
- Front reading lights
- Fully automatic headlights
- Low tire pressure warning
- Oil pressure gauge
- Outside temperature display
- 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
- Ignition disable
- Occupant sensing airbag
- Overhead airbag
- Panic alarm
- Perimeter/approach lights
- Security system
- Traction control
Dealer Notes
KBB.com Consumer Reviews

Overall3.8Out of 5
- 2.0
Transmission trash
By Jason | on Monday, April 07, 2025
Bought a 2023 GMC Duramax diesel Sierra SLT had it for two years hit 50,000 miles. The throttlebody broke went in for service. Got it back three weeks at 62,000 miles now my transmission is slipping. I travel back-and-forth from South Carolina to North Carolina for work daughter’s truck would be my forever truck. What a joke Hundred thousand dollar truck junk… - 5.0
Fantastic truck
By Jjj | on Sunday, November 07, 2021
This one of the most solid vehicles that I have ever driven! The 401 hp engine is more than enough power and the transmission is smooth! Highly recommend this truck!… - 3.0
Don't judge a truck by the appearance
By jmil | on Wednesday, May 11, 2022
Great truck, loved it until the DEF tank heater malfunctioned and shut down the truck. Now sitting waiting for the replacement tank for over 10 weeks. Turns out every HD truck 2020 and 2021 has the same problem and all will need this replacement that is being produced at a snail's pace by GM. Per the dealership, last count, over 9000 trucks like mine are idle waiting for this part. $65000 waste of money and terrible service by GMC (not the local dealership).…
Based on 13 consumer ratings for 2020–2025 models. | Privacy
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