Used 2020 GMCSierra 2500HD AT4 Truck Duramax V8 Turbodiesel
- Exterior Color
- Summit White
- Interior Color
- Jet Black With Kalahari Accents
- Odometer
- 87,494 miles
- Transmission
- 10-Speed Automatic
- Drivetrain
- 4WD
- Engine
- Duramax 6.6L V8 Turbodiesel
- VIN
- 1GT49PEY8LF329156
- Stock Number
- T29156
Included Packages & Accessories
- Navigation System
- 6 Speakers
- AM/FM radio: SiriusXM
- Premium audio system: Premium GMC Infotainment System
- Air Conditioning
- Automatic temperature control
- Front dual zone A/C
- Rear window defroster
- Memory seat
- Power driver seat
- Power steering
- Power windows
- Remote keyless entry
- Steering wheel mounted audio controls
- 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
- Low tire pressure warning
- Occupant sensing airbag
- Overhead airbag
- Power Sunroof
- Pickup Box
- Brake assist
- Electronic Stability Control
- Lane Departure Warning System
- Delay-off headlights
- Front fog lights
- Fully automatic headlights
- Panic alarm
- Security system
- Speed control
- 220 Amps Alternator
- Engine Block Heater
- Exhaust Brake
- Heavy-Duty 80 Amp Battery
- 6" Rectangular Black Tubular Assist Steps (LPO)
- Auto-dimming door mirrors
- Bumpers: body-color
- Front License Plate Kit
- Heated door mirrors
- Power door mirrors
- Rear step bumper
- Turn signal indicator mirrors
- Winter Grille Cover
- 1st & 2nd Rows All-Weather Floor Liners (LPO)
- 2 USB Ports (1st Row)
- Apple CarPlay/Android Auto
- Auto-dimming Rear-View mirror
- Compass
- Driver door bin
- Driver vanity mirror
- Front reading lights
- Heated steering wheel
- Illuminated entry
- Outside temperature display
- Overhead console
- Passenger vanity mirror
- Rear reading lights
- Rear seat center armrest
- Tachometer
- Telescoping steering wheel
- Tilt steering wheel
- Trip computer
- Voltmeter
- Front Center Armrest
- Heated front seats
- Heated rear seats
- Perforated Leather-Appointed Front Seat Trim
- Power passenger seat
- Split folding rear seat
- Ventilated front seats
- Passenger door bin
- Hitch Guidance w/Hitch View
- In-Vehicle Trailering System App
- Alloy wheels
- Wheels: 18" 6-Spoke Machined Aluminum
- Variably intermittent wipers
- Professionally Detailed
- **AUTOCHECK MINOR DAMAGE**
- **NON SMOKER**
- **4WD**
- **NEW TIRES**
- **NAVIGATION**
- **REAR VIEW CAMERA**
- **PANORAMIC MOONROOF**
- **KEYLESS ENTRY**
- **REMOTE START**
- **ANDROID AUTO & APPLE CARPLAY**
- **ADAPTIVE CRUISE**
- **BLUETOOTH HANDS FREE CALLING**
- **FRONT USB CHARGING PORTS**
- **REAR USB CHARGING PORTS**
- **TOW PKG**
- **LEATHER**
- **AUTO HEADLIGHTS**
- **LED HEADLIGHTS**
- **POWER ADUSTABLE DRIVER'S SEAT**
- **POWER ADJUSTABLE PASSENGER SEAT**
- **BLIND SPOT WARNING SYS**
- **REAR TRAFFIC ALERT**
- **LANE DEPARTURE WARNING**
- **HEATED/COOLED SEATS**
- **REAR PARK ASSIST**
- **RUNNING BOARDS**
- AT4 Preferred Package
- AT4 Premium Package
- Driver Alert Package I
- Driver Alert Package II
- Preferred Equipment Group 4SB
- Technology Package
- X31 Off-Road Package
- 6-Speaker Audio System Feature
- Bose Premium 7 Speaker Sound System
- HD Radio
- Radio: AM/FM w/Premium GMC Infotainment System
- Radio: Premium GMC Infotainment Sys w/Navigation
- SiriusXM w/360L
- Steering Wheel Audio Controls
- Electric Rear-Window Defogger
- 12-Volt Rear Auxiliary Power Outlet
- 120-Volt Bed Mounted Power Outlet
- 120-Volt Instrument Panel Power Outlet
- Driver Memory
- Power Windows w/Driver Express Up/Down
- Remote Vehicle Starter System
- Universal Home Remote
- Manual Tilt-Wheel/Telescoping Steering Column
- Off-Road Suspension
- Electrical Lock Control Steering Column
- Keyless Open & Start
- Power Door Locks
- Hill Descent Control
- Unauthorized Entry Theft-Deterrent System
- 2-Speed Active Transfer Case
- IntelliBeam Automatic High Beam On/Off
- LED Cargo Area Lighting
- LED Smoked Amber Roof Marker Lamps
- Painted Black Surround Grille
- Rear Wheelhouse Liners
- Red Recovery Hooks
- Spray-On Pickup Box Bed Liner w/AT4 Logo
- 2 USB Ports
- 2nd Row Dual USB Charge-Only Ports
- 4.2" Diagonal Color Display Driver Info Center
- 4G LTE Wi-Fi Hotspot Capable
- 8" Multicolor Driver Instrument Info Display
- Automatic Emergency Braking
- Bed View Camera
- Compass Located In Instrument Cluster
- Floor-Mounted Center Console
- Following Distance Indicator
- Forward Collision Alert
- GMC Connected Access Capable
- HD Rear Vision Camera
- HD Surround Vision w/2 Trailer View Camera Provisions
- Lane Change Alert w/Side Blind Zone Alert
- Multicolor 15" Diagonal Head-Up Display
- OnStar & GMC Connected Services Capable
- Rear Camera Mirror
- Rear Cross Traffic Alert
- Ultrasonic Front & Rear Park Assist
- Wireless Charging
- 10-Way Power Driver Seat Adjuster w/Lumbar
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- Front Bucket Seats
- Heated & Ventilated Front Bucket Seats
- Heated 2nd Row Outboard Seats
- Heated Driver & Front Outboard Passenger Seats
- Safety Alert Seat
- Integrated Trailer Brake Controller
- Wheels: 20" 6-Spoke Bright Machined Aluminum
- Deep-Tinted Glass
- Power Front Passenger Windows w/Express Up/Down
- Power Rear Windows w/Express Down
- Power Sliding Rear Window w/Defogger
Detailed Specifications
- 1st and 2nd row curtain head airbags
- 4-wheel ABS Brakes
- ABS and Driveline Traction Control
- Aluminum dash trim
- Aluminum/sim carbon fibre center console trim
- Aluminum/sim carbon fibre door trim
- Anti-theft alarm system
- Audio System Premium Brand : Premium GMC Infotainment System
- Audio controls on steering wheel
- Audio system memory card slot
- Automatic front air conditioning
- Auxilliary engine cooler
- Auxilliary transmission cooler
- Bluetooth wireless phone connectivity
- Braking Assist
- Bucket front seats
- Climate Controlled : Driver and passenger heated
- Compass
- Cruise control
- Cruise controls on steering wheel
- Daytime running lights
- Digital Audio Input
- Driver seat memory
- Dual front air conditioning zones
- Dual illuminated vanity mirrors
- Electrochromatic auto-dimming mirrors
- Electrochromatic rearview mirror
- External temperature display
- Fold-up cushion rear seats
- Front Ventilated disc brakes
- Front and rear reading lights
- Front fog/driving lights
- Heated driver mirror
- Heated passenger mirror
- Heated steering wheel
- Leather seat upholstery
- Leather/aluminum steering wheel trim
- Machined aluminum rims w/ painted accents
- Memorized Settings for 2 drivers
- Memorized Settings including door mirror(s)
- Passenger Airbag
- Power extendable trailer style exterior mirrors
- Power remote driver mirror adjustment
- Power remote passenger mirror adjustment
- Power retractable mirrors
- Power windows
- Privacy glass: Deep
- Rear seats center armrest
- Remote Engine Start : Keyfob remote start
- Remote activated exterior entry lights
- Remote power door locks
- Remote window operation
- Side airbag
- SiriusXM AM/FM/HD/Satellite Radio
- SiriusXM Satellite Radio(TM)
- Speed-proportional power steering
- Split rear bench
- Stability controll with anti-roll
- Suspension class: Off-road
- Tachometer
- Tilt and telescopic steering wheel
- Tire Pressure Monitoring System: Tire specific
- Total Number of Speakers: 6
- Trailer hitch
- Trip computer
- Turn signal in mirrors
- Urethane shift knob trim
- Video Monitor Location: Front
- Wheel Diameter: 18
- Wheel Width: 8
Standard Features
- AT4 Preferred Package
- Driver Alert Package I
- Wheels: 20" 6-Spoke Bright Machined Aluminum
- HD Surround Vision w/2 Trailer View Camera Provisions
- Rear Camera Mirror
- Bed View Camera
- Multicolor 15" Diagonal Head-Up Display
- 8" Multicolor Driver Instrument Info Display
- Universal Home Remote
- Power Sliding Rear Window w/Defogger
- Radio: Premium GMC Infotainment Sys w/Navigation
- Bose Premium 7 Speaker Sound System
- LED Smoked Amber Roof Marker Lamps
- Wireless Charging
- Ultrasonic Front & Rear Park Assist
- Lane Change Alert w/Side Blind Zone Alert
- Rear Cross Traffic Alert
- Forward Collision Alert
- Automatic Emergency Braking
- IntelliBeam Automatic High Beam On/Off
- Following Distance Indicator
- Safety Alert Seat
- 6-Speaker Audio System Feature
- SiriusXM w/360L
- HD Radio
- Radio: AM/FM w/Premium GMC Infotainment System
- Floor-Mounted Center Console
- Compass Located In Instrument Cluster
- 4.2" Diagonal Color Display Driver Info Center
- Electric Rear-Window Defogger
- Power Door Locks
- Remote Vehicle Starter System
- Keyless Open & Start
- OnStar & GMC Connected Services Capable
- 12-Volt Rear Auxiliary Power Outlet
- 120-Volt Instrument Panel Power Outlet
- 120-Volt Bed Mounted Power Outlet
- 2 USB Ports
- 2nd Row Dual USB Charge-Only Ports
- HD Rear Vision Camera
- Heated Driver & Front Outboard Passenger Seats
- Heated & Ventilated Front Bucket Seats
- Heated 2nd Row Outboard Seats
- Steering Wheel Audio Controls
- Manual Tilt-Wheel/Telescoping Steering Column
- Electrical Lock Control Steering Column
- Unauthorized Entry Theft-Deterrent System
- Power Windows w/Driver Express Up/Down
- Power Front Passenger Windows w/Express Up/Down
- Power Rear Windows w/Express Down
- Spray-On Pickup Box Bed Liner w/AT4 Logo
- Deep-Tinted Glass
- Painted Black Surround Grille
- LED Cargo Area Lighting
- Red Recovery Hooks
- Rear Wheelhouse Liners
- X31 Off-Road Package
- Integrated Trailer Brake Controller
- 2-Speed Active Transfer Case
- 4G LTE Wi-Fi Hotspot Capable
- GMC Connected Access Capable
- 10-Way Power Driver Seat Adjuster w/Lumbar
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- Driver Memory
- Off-Road Suspension
- Hill Descent Control
Dealer Notes
This 2020 GMC Sierra 2500HD AT4 in Summit White comes with the following features: Duramax 6.6L V8 Turbodiesel 10-Speed Automatic 4WD Professionally Detailed, **AUTOCHECK MINOR DAMAGE**, **NON SMOKER**, **4WD**, **NEW TIRES**, **NAVIGATION**, **REAR VIEW CAMERA**, **PANORAMIC MOONROOF**, **KEYLESS ENTRY**, **REMOTE START**, **ANDROID AUTO & APPLE CARPLAY**, **ADAPTIVE CRUISE**, **BLUETOOTH HANDS FREE CALLING**, **FRONT USB CHARGING PORTS**, **REAR USB CHARGING PORTS**, **TOW PKG**, **LEATHER**, **AUTO HEADLIGHTS**, **LED HEADLIGHTS**, **POWER ADUSTABLE DRIVER'S SEAT**, **POWER ADJUSTABLE PASSENGER SEAT**, **BLIND SPOT WARNING SYS**, **REAR TRAFFIC ALERT**, **LANE DEPARTURE WARNING**, **HEATED/COOLED SEATS**, **REAR PARK ASSIST**, and **RUNNING BOARDS** AT4 Preferred Package (Bose Premium 7 Speaker Sound System, LED Smoked Amber Roof Marker Lamps, Power Sliding Rear Window w/Defogger, Radio: Premium GMC Infotainment Sys w/Navigation, Universal Home Remote, and Wireless Charging), AT4 Premium Package (Wheels: 20" 6-Spoke Bright Machined Aluminum), Driver Alert Package I, Driver Alert Package II (Automatic Emergency Braking, Following Distance Indicator, Forward Collision Alert, IntelliBeam Automatic High Beam On/Off, Lane Departure Warning System, and Safety Alert Seat), Preferred Equipment Group 4SB (12-Volt Rear Auxiliary Power Outlet, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 1st & 2nd Rows All-Weather Floor Liners (LPO), 2 USB Ports, 2 USB Ports (1st Row), 2-Speed Active Transfer Case, 2nd Row Dual USB Charge-Only Ports, 4.2" Diagonal Color Display Driver Info Center, Compass Located In Instrument Cluster, Deep-Tinted Glass, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, Floor-Mounted Center Console, HD Rear Vision Camera, Heated & Ventilated Front Bucket Seats, Heated 2nd Row Outboard Seats, Heated Driver & Front Outboard Passenger Seats, Integrated Trailer Brake Controller, Keyless Open & Start, LED Cargo Area Lighting, Manual Tilt-Wheel/Telescoping Steering Column, OnStar & GMC Connected Services Capable, Painted Black Surround Grille, Power Door Locks, Power Front Passenger Windows w/Express Up/Down, Power Rear Windows w/Express Down, Power Windows w/Driver Express Up/Down, Rear Wheelhouse Liners, Red Recovery Hooks, Remote Vehicle Starter System, Spray-On Pickup Box Bed Liner w/AT4 Logo, Steering Wheel Audio Controls, and Unauthorized Entry Theft-Deterrent System), Technology Package (8" Multicolor Driver Instrument Info Display, Bed View Camera, HD Surround Vision w/2 Trailer View Camera Provisions, Multicolor 15" Diagonal Head-Up Display, and Rear Camera Mirror), X31 Off-Road Package, 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather, and Navigation System AT4 Preferred Package (Bose Premium 7 Speaker Sound System, LED Smoked Amber Roof Marker Lamps, Power Sliding Rear Window w/Defogger, Radio: Premium GMC Infotainment Sys w/Navigation, Universal Home Remote, and Wireless Charging), AT4 Premium Package (Wheels: 20" 6-Spoke Bright Machined Aluminum), Driver Alert Package I (Lane Change Alert w/Side Blind Zone Alert, Rear Cross Traffic Alert, and Ultrasonic Front & Rear Park Assist), Driver Alert Package II (Automatic Emergency Braking, Following Distance Indicator, Forward Collision Alert, IntelliBeam Automatic High Beam On/Off, Lane Departure Warning System, and Safety Alert Seat), Preferred Equipment Group 4SB (12-Volt Rear Auxiliary Power Outlet, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 1st & 2nd Rows All-Weather Floor Liners (LPO), 2 USB Ports, 2 USB Ports (1st Row), 2-Speed Active Transfer Case, 2nd Row Dual USB Charge-Only Ports, 4.2" Diagonal Color Display Driver Info Center, Compass Located In Instrument Cluster, Deep-Tinted Glass, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, Floor-Mounted Center Console, HD Rear Vision Camera, Heated & Ventilated Front Bucket Seats, Heated 2nd R
KBB.com Consumer Reviews
- 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).