6-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather. CARFAX One-Owner. Clean CARFAX. Onyx Black 2021 GMC Sierra 2500HD AT4 4WD 6-Speed Automatic 6.6L V8
The Best Service, The Best Selection, The Best Price...The Difference is Key!
Used 2021 GMCSierra 2500HD AT4
- Exterior Color
- Onyx Black
- Interior Color
- Jet Black With Kalahari Accents
- Odometer
- 64,163 miles
- Transmission
- 6-Speed Automatic
- Drivetrain
- 4WD
- Engine
- 6.6L V8
- VIN
- 1GT49PE74MF127309
- Stock Number
- C62552A
Included Packages & Accessories
- 3.73 Rear Axle Ratio
- 18" Machined Aluminum Wheels
- 20" Machined Aluminum Wheels
- Perforated Leather-Appointed Front Seat Trim
- 1st & 2nd Rows All-Weather Floor Liners (LPO)
- Pickup Box
- AT4 High Clearance Step (LPO)
- Trailer Tire Pressure Monitor Sensors
- Heavy-Duty 80 Amp Battery
- 2 USB Ports (1st Row)
- Lane Departure Warning System
- 4-Wheel Disc Brakes
- Apple CarPlay/Android Auto
- Premium audio system: Premium GMC Infotainment System
- AM/FM radio: SiriusXM with 360L
- Compass
- Auto-dimming Rear-View mirror
- Ventilated front seats
- Variably intermittent wipers
- Turn signal indicator mirrors
- Trip computer
- Traction control
- Tilt steering wheel
- Telescoping steering wheel
- Steering wheel mounted audio controls
- Split folding rear seat
- Speed-sensing steering
- Speed control
- Security system
- Remote keyless entry
- Rear window defroster
- Rear step bumper
- Rear seat center armrest
- Rear reading lights
- Power windows
- Power steering
- Power passenger seat
- Power driver seat
- Power door mirrors
- Passenger vanity mirror
- Passenger door bin
- Panic alarm
- Overhead console
- Overhead airbag
- Outside temperature display
- Occupant sensing airbag
- Memory seat
- Low tire pressure warning
- Illuminated entry
- Heated steering wheel
- Heated rear seats
- Heated front seats
- Heated door mirrors
- Fully automatic headlights
- Front wheel independent suspension
- Front reading lights
- Front fog lights
- Front dual zone A/C
- Front anti-roll bar
- Dual front side impact airbags
- Dual front impact airbags
- Driver vanity mirror
- Driver door bin
- Delay-off headlights
- Bumpers: body-color
- Brake assist
- Automatic temperature control
- Auto-dimming door mirrors
- Alloy wheels
- ABS brakes
- Voltmeter
- Tachometer
- Front Center Armrest
- Electronic Stability Control
- Air Conditioning
- 6 Speakers
- Preferred Equipment Group 4SB
- 10-Way Power Driver Seat Adjuster w/Lumbar
- AT4 Preferred Package
- AT4 Premium Plus Package
- Driver Alert Package I
- Driver Alert Package II
- Technology Package
- Radio: AM/FM w/Premium GMC Infotainment System
- Radio: Premium GMC Infotainment Sys w/Navigation
- Electric Rear-Window Defogger
- Front Prem Floor Liners w/Removable Carpet Insert
- OnStar & GMC Connected Services Capable
- 120-Volt Instrument Panel Power Outlet
- Bed View Camera w/2 Trailer Camera Provisions
- Power Sunroof
- Spray-On Pickup Box Bed Liner w/AT4 Logo
- Deep-Tinted Glass
- LED Smoked Amber Roof Marker Lamps
- LED Cargo Area Lighting
- Integrated Trailer Brake Controller
- Skid Plates
- Off-Road Suspension
- 2-Speed Active Transfer Case
- Inside Rearview Auto-Dimming Rear Camera Mirror
- SiriusXM w/360L
- Driver Memory
- Power Sliding Rear Window w/Defogger
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- GMC Connected Access Capable
- Power Front Passenger Windows w/Express Up/Down
- Power Rear Windows w/Express Down
- Keyless Open & Start
- Power Door Locks
- Power Windows w/Driver Express Up/Down
- Rear Wheelhouse Liners
- Rear Prem Floor Liners w/Removable Carpet Insert
- Remote Vehicle Starter System
- Compass Located In Instrument Cluster
- Floor-Mounted Center Console
- Painted Black Surround Grille
- Safety Alert Seat
- Hill Descent Control
- Wireless Charging
- Heated Driver & Front Outboard Passenger Seats
- Heated 2nd Row Outboard Seats
- 120-Volt Bed Mounted Power Outlet
- 12-Volt Rear Auxiliary Power Outlet
- Heated & Ventilated Front Bucket Seats
- 2 USB Ports
- Electrical Lock Control Steering Column
- Manual Tilt-Wheel/Telescoping Steering Column
- ProGrade Trailering System
- Hitch Guidance w/Hitch View
- IntelliBeam Automatic High Beam On/Off
- In-Vehicle Trailering System App
- HD Radio
- Ultrasonic Front & Rear Park Assist
- 4.2" Diagonal Color Display Driver Info Center
- Following Distance Indicator
- Forward Collision Alert
- Rear Cross Traffic Alert
- Universal Home Remote
- Red Recovery Hooks
- 8" Multicolor Driver Information Center
- Automatic Emergency Braking
- Steering Wheel Audio Controls
- Lane Change Alert w/Side Blind Zone Alert
- Bose Premium 7 Speaker Sound System
- 6-Speaker Audio System Feature
- 2nd Row Dual USB Charge-Only Ports
- Unauthorized Entry Theft-Deterrent System
- Multicolor 15" Diagonal Head-Up Display
- HD Rear Vision Camera
- HD Surround Vision
- 4G LTE Wi-Fi Hotspot Capable
- Wireless Phone Projection
- X31 Off-Road Package
- Front Bucket Seats
Detailed Specifications
- 3-point seatbelt : Rear seat center 3-point seatbelt
- ABS Brakes : 4-wheel antilock (ABS) brakes
- Auto headlights : Auto on/off headlight control
- Auto high-beam headlights : IntelliBeam auto high-beam headlights
- Blind spot : Lane Change Alert with Side Blind Zone Alert blind spot warning
- Brake assist system : Predictive brake assist system
- Brake type : 4-wheel disc brakes
- Cab mounted cargo light : Cab mounted cargo light
- Camera : Aerial view camera
- Child door locks : Manual rear child safety door locks
- Clearance lights : Cab clearance lights
- Convex spotter : Driver and passenger convex spotter mirrors
- Delay off headlights : Delay-off headlights
- Distance alert : Following Distance Indicator
- Electronic stability control : StabiliTrak w/Proactive Roll Avoidance electronic stability control system with anti-roll
- Fog lights : LED front fog lights
- Forward collision warning : Forward Collision Alert with Automatic Braking
- Front camera : Front mounted camera
- Front impact airbag driver : Driver front impact airbag
- Front impact airbag passenger : Passenger front impact airbag
- Front side impact airbag driver : Seat mounted side impact driver airbag
- Front side impact airbag passenger : Seat mounted side impact front passenger airbag
- Head up display : Head-up display
- Headlight type : Reflector headlights
- Headlights : LED low and high beam headlights
- High mount stop light : High mounted center stop light
- Hill control : Hill Descent Control (HDC)
- Hill start assist : Hill start assist
- Illuminated entry : Illuminated entry
- Immobilizer : Immobilizer
- Instrumentation display : Analog instrumentation display
- Interior courtesy lights : Fade interior courtesy lights
- LED brake lights : LED brake lights
- Lane departure : Lane Departure Warning
- Left camera : Left side camera
- Low tire pressure warning : Tire specific low air pressure warning
- Multiple headlights : Multiple enclosed headlights
- Number of airbags : 6 airbags
- Occupancy sensor : Airbag occupancy sensor
- Overhead airbags : Curtain first and second-row overhead airbags
- Parking sensors : UltraSonic front and rear parking sensors
- Perimeter approach lighting : Remote activated perimeter approach lighting
- Pickup box camera : Pickup box camera
- Rear camera : HD Rear Vision Camera w/Hitch View rear mounted camera
- Rear collision warning : Rear Cross-Traffic Alert collision warning
- Remote panic alarm : Remote panic alarm
- Restricted driving mode/alerts : Teen Driver restricted driving mode/alerts
- Right camera : Right side camera
- Running lights : LED daytime running lights
- Seatbelt pretensioners : Front seatbelt pretensioners
- Seatbelt pretensioners number : 2 seatbelt pre-tensioners
- Security system : Security system
- Turn signal in door mirrors : Turn signal indicator in door mirrors
- Video rearview mirror : Video-feed rearview mirror
- Air conditioning : Yes
- Armrests front center : Front seat center armrest
- Armrests rear : Rear seat center armrest
- Cabback insulator : Cabback insulator
- Climate control : Automatic climate control
- Console insert material : Aluminum and sim carbon fiber console insert
- Cooled front seats : Ventilated driver and front passenger seats
- Door panel insert : Aluminum and sim carbon fiber door panel insert
- Door trim insert : Vinyl door trim insert
- Driver lumbar : Driver seat with 2-way power lumbar
- Driver seat direction : Driver seat with 8-way directional controls
- Dual-zone front climate control : Dual-zone front climate control
- Floor coverage : Full floor coverage
- Floor covering : Full carpet floor covering
- Floor mats : Rubber front and rear floor mats with carpet inserts
- Folding rear seats : 60-40 folding rear seats
- Front head restraint control : Manual front seat head restraint control
- Front head restraints : Height adjustable front seat head restraints
- Front passenger lumbar : Front passenger seat with 2-way power lumbar
- Front seat upholstery : Leather front seat upholstery
- Front seatback upholstery : Plastic front seatback upholstery
- Gearshifter material : Urethane gear shifter material
- Headliner coverage : Full headliner coverage
- Headliner material : Cloth headliner material
- Heated front seats : Heated driver and front passenger seats
- Heated rear seats : Heated rear seats
- Heated steering wheel : Heated steering wheel
- Interior accents : Chrome interior accents
- Number of memory settings : 2 memory settings
- Panel insert : Aluminum instrument panel insert
- Passenger seat direction : Front passenger seat with 8-way directional controls
- Power driver seat controls : Driver seat power reclining, lumbar support, cushion tilt, fore/aft control and height adjustable control
- Power passenger seat controls : Passenger seat power reclining, lumbar support, cushion tilt, fore/aft control and height adjustable control
- Rear console climate control ducts : Rear console climate control ducts
- Rear head restraint control : 2 rear seat head restraints
- Rear head restraint control : Manual rear seat head restraint control
- Rear head restraints : Height adjustable rear seat head restraints
- Rear seat folding position : Fold-up rear seat cushion
- Rear seat upholstery : Vinyl rear seat upholstery
- Rear seatback upholstery : Carpet rear seatback upholstery
- Rear seats : Split-bench rear seat
- Rear seats fixed or removable : Fixed rear seats
- Rear under seat ducts : Rear under seat climate control ducts
- Seating capacity : 5
- Secondary floor mats : Vinyl/rubber front and rear secondary floor mats
- Split front seats : Bucket front seats
- Steering wheel material : Leather and aluminum steering wheel
- Steering wheel telescopic : Manual telescopic steering wheel
- Steering wheel tilt : Manual tilting steering wheel
- Tinted windows : Deep tinted windows
- 12V power outlets : 2 12V power outlets
- Accessory power : Retained accessory power
- All-in-one key : All-in-one remote fob and ignition key
- Auto door locks : Auto-locking doors
- Auto-dimming door mirror driver : Auto-dimming driver side mirror
- Auto-dimming door mirror passenger : Auto-dimming passenger side mirror
- Battery charge warning : Battery charge warning
- Beverage holders : Front beverage holders
- Beverage holders rear : Rear beverage holders
- Boxside steps : BedStep integrated side steps
- Brake pad warning : Brake pad wear indicator
- Capless fuel filler : Capless fuel filler
- Clock : Digital clock
- Compass : Compass
- Cruise control : Cruise control with steering wheel mounted controls
- Day/Night rearview mirror : Day/Night rearview mirror
- Door ajar warning : Door ajar warning
- Door bins front : Driver and passenger door bins
- Door bins rear : Rear door bins
- Door locks : Power door locks with 2 stage unlocking
- Door mirrors : Power door mirrors
- Driver foot rest : Driver foot rest
- Driver information center : Driver information center
- Easy lift tailgate : EZ Lift
- Easy lower tailgate : Easy lower tailgate
- Engine hour meter : Engine hour meter
- Engine temperature warning : Engine temperature warning
- Engine/electric motor temperature gauge : Engine/electric motor temperature gauge
- Exterior 120V AC power outlet : 1 exterior 120V AC power outlet
- First-row windows : Power first-row windows
- Floor console : Full floor console
- Floor console storage : Covered floor console storage
- Fob engine controls : Keyless Open/Keyless Start with hands-free access and push button start
- Folding door mirrors : Power folding door mirrors
- Front reading lights : Front reading lights
- Garage door opener : Garage door opener
- Glove box : Locking glove box
- Headlights on reminder : Headlights on reminder
- Heated door mirrors : Heated driver and passenger side door mirrors
- Inclinometer : Inclinometer
- Integrated tailgate step : Integrated tailgate step
- Interior 120V AC power outlets : 1 interior 120V AC power outlet
- Key in vehicle warning : Key in vehicle warning
- Keyfob cargo controls : Keyfob trunk control
- Keyfob keyless entry : Keyfob keyless entry
- Keyfob remote start : Keyfob remote start
- Keyfob window controls : Keyfob window control
- Low level warnings : Low level warning for oil, coolant, fuel, washer fluid and brake fluid
- Memory settings : Memory settings include: door mirrors
- Number of beverage holders : 8 beverage holders
- Oil pressure gauge : Oil pressure gauge
- Oil pressure warning : Oil pressure warning
- One-touch down window : Front and rear one-touch down windows
- One-touch up window : Driver and passenger one-touch up windows
- Overhead console : Mini overhead console
- Passenger doors rear left : Conventional left rear passenger door
- Passenger doors rear right : Conventional right rear passenger door
- Rear cargo door : MultiPro Tailgate tailgate
- Rear reading lights : Rear reading lights
- Rear seat check warning : Rear Seat Reminder rear seat check warning
- Rear seat direction : Front facing rear seat
- Rear window defroster : Rear window defroster
- Rear windshield : Power rear windshield
- Rearview mirror : Auto-dimming rear view mirror
- Seatback storage pockets : 2 seatback storage pockets
- Second-row windows : Power second-row windows
- Service interval warning : Service interval indicator
- Speedometer : Redundant digital speedometer
- Steering mounted audio control : Steering wheel mounted audio controls
- Tachometer : Tachometer
- Tailgate control : Tailgate/power door lock
- Temperature display : Exterior temperature display
- Tire pressure : Tire Fill Alert tire pressure fill assist
- Transmission fluid temperature warning : Transmission fluid temp warning
- Transmission temperature gauge : Transmission fluid temperature gauge
- Trip computer : Trip computer
- Trip odometer : Trip odometer
- Turn signal warning : Turn signal on warning
- Under seat tray rear : Rear under seat tray
- Variable panel light : Variable instrument panel light
- Visor driver mirror : Driver visor mirror
- Visor illuminated driver mirror : Illuminated driver visor mirror
- Visor illuminated passenger mirror : Illuminated passenger visor mirror
- Visor passenger mirror : Passenger visor mirror
- Voltmeter : Voltmeter
- Wipers : Variable intermittent front windshield wipers
- Wireless device charging : Front wireless smart device charging
- Bed liner : Spray-in pickup bed liner
- Bed-rail protectors : Pickup bed-rail protectors
- Body panels : Galvanized steel/aluminum body panels with side impact beams
- Box style : Standard style pickup box
- Bumper rub strip front : Black front bumper rub strip
- Bumpers front : Body-colored front bumper
- Bumpers rear : Body-colored rear bumper
- Door handle material : Body-colored door handles
- Door mirror style : Black door mirrors
- Door mirror type : Power extendable trailer mirrors
- Exterior mirror spot lights : Exterior mirror LED spot lights
- Fenders : Black fender flares
- First-row sunroof : First-row sliding and tilting glass sunroof with express open/close activation sunshade
- Grille style : Dark chrome grille
- In-box lighting : LED in-box lighting
- Number of doors : 4 doors
- Paint : Non-metallic paint
- Rear bumper step : CornerStep rear bumper step
- Side steps : Side assist steps
- Skid plate : 3 underbody skid plates
- Spare tire : Full-size spare tire with steel wheel
- Spare tire location : Crank-down spare tire
- Special paint : Monotone paint
- Tire sensors : Trailer tire pressure and temperature sensors
- Tires : LT275/65SR20 AT BSW front and rear tires
- Tow hooks front : 2 front tow hooks
- Towing brake controller : Trailer brake controller
- Towing class : Class IV tow rating
- Towing hitch : Trailer hitch
- Towing hitch light : Trailer hitch light
- Towing trailer sway : Trailer sway control
- Towing wiring harness : Trailer wiring harness
- Trailer light malfunction warning : GMC ProGrade Trailering System trailer light malfunction warning
- Trailer light test : GMC ProGrade Trailering System trailer light test
- Trailer theft alarm : GMC ProGrade Trailering System trailer theft alarm
- Vehicle and trailer reverse assist : Trailering Assist Guidelines vehicle and trailer reverse assist with visual graphic guidance only
- Vehicle to trailer hitching assist : Hitch Guidance vehicle to trailer hitching assist
- Wheel covers : Chrome hub wheel covers
- Wheels : 20 x 8.5-inch front and rear machined w/painted accents aluminum wheels
- Window Trim : Black side window trim
- Emissions : Federal emissions
- Emissions tiers : Tier 2 Bin 8 emissions
- Amplifier : Amplifier
- Antenna : Fixed audio antenna
- Aux input jack : Auxiliary input jack
- External memory : External memory control
- Internet radio capability : Internet radio capability
- Number of first-row screens : 2 total number of 1st row displays
- Primary display size : 8 inch primary display
- Primary display touchscreen : Primary monitor touchscreen
- Radio : AM/FM/digital/SiriusXM with 360Lsatellite
- Satellite trial : 3 month satellite trial subscription
- Seek scan : Seek scan
- Speakers : Bose speakers
- Speakers number : 7 speakers
- Voice activated audio : Voice activated audio controls
- Wireless streaming : Bluetooth wireless audio streaming
- 4WD type : AutoTrac part and full-time 4WD
- ABS Brakes : Four channel ABS brakes
- Alternator Type : Alternator
- Battery run down protection : Battery run down protection
- Battery type : Heavy-duty lead acid battery
- Cylinder head material : Aluminum cylinder head
- Displacement : 6.6 L
- Drive type : Four-wheel drive
- Driver selectable steering effort : Driver selectable steering effort
- Electronic parking brake : Electronic parking brake
- Engine : 6.6L V-8 gasoline direct injection, variable valve control, regular unleaded, engine with 401HP
- Engine Cylinders : V8
- Engine Location : Front mounted engine
- Engine Mounting direction : Longitudinal mounted engine
- Engine block material : Iron engine block
- Engine cooler : Engine oil cooler
- Front anti-roll : Front anti-roll bar
- Fuel Type : Regular Unleaded
- Horsepower : 401 HP @5200 RPM
- Ignition : Spark ignition system
- Lock-up transmission : Lock-up transmission
- Locking hub control : Auto locking hub control
- Overdrive transmission : Overdrive transmission
- Powertrain type : ICE
- Radiator : Radiator
- Rear Springs : Regular grade rear springs
- Rear locking differential : Automatic rear locking differential
- Selectable mode transmission : Tow/Haul Mode selectable mode transmission
- Sequential shift control : Sequential shift control
- Shock absorbers : Rancho gas-pressurized shock absorbers
- Speed sensitive steering : Digital Steering Assist speed sensitive power steering
- Springs front : Front torsion springs
- Springs rear : Rear leaf springs
- Steering : Hydraulic power-assist steering system
- Steering type : Re-circulating ball steering
- Suspension : Off-road ride suspension
- Suspension ride type front : Independent front suspension
- Suspension ride type rear : Rigid axle rear suspension
- Suspension type front : Short and long arm front suspension
- Suspension type rear : Leaf spring rear suspension
- Tailpipe : Stainless steel single exhaust
- Traction control : All-speed ABS and driveline traction control
- Transfer case : Electronic transfer case shift
- Transmission : 6-speed automatic
- Transmission Type : Automatic
- Transmission electronic control : Transmission electronic control
- Transmission oil cooler : Transmission oil cooler
- Two-Speed Transfer Case : Two-Speed Transfer Case
- Valves per cylinder : 2
- Ventilated brakes : Front and rear ventilated disc brakes
- Handsfree : Bluetooth handsfree wireless device connectivity
- Integrated navigation : Integrated navigation system with voice activation
- Internet access : 4G LTE Wi-Fi Hotspot capable mobile hotspot internet access
- Smart device integration : Apple CarPlay/Android Auto smart device wireless mirroring
- USB ports : 6 USB ports
Dealer Notes
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).
