Equipment
The leather seats in it are a must for buyers looking for comfort, durability, and style. Keep your hands warm all winter with a heated steering wheel in the vehicle . Protect this unit from unwanted accidents with a cutting edge backup camera system. An off-road package is installed on this unit so you are ready for your four-wheeling best. The steering wheel audio controls on the GMC Sierra keep the volume and station within easy reach. This GMC Sierra offers Apple CarPlay for seamless connectivity. This model offers Android Auto for seamless smartphone integration. This GMC Sierra features a hands-free Bluetooth phone system. It keeps you comfortable with Auto Climate. This 3/4 ton pickup has a clean CARFAX vehicle history report. Start it from inside with remote start. Maintaining a stable interior temperature in this 3/4 ton pickup is easy with the climate control system. With the keyless entry system on this model you can pop the trunk without dropping your bags from the store.
Packages
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; Wireless Phone Projection; 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; Front Premium Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Rear Premium Floor Liners with Removable Carpet Insert; 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; Spray-On Pickup Box Bed Liner with AT4 Logo; AM/FM Stereo with Premium GMC Infotainment System; 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. **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.**
Used 2021 GMCSierra 2500 HD AT4 Truck Crew Cab
- Exterior Color
- Summit White
- Interior Color
- Jet Black
- Odometer
- 92,971 miles
- Body/Seating
- Truck Crew Cab/5 seats
- Transmission
- 6 speed automatic
- Drivetrain
- 4x4
- Engine
- V-8 cyl
- VIN
- 1GT19PEY5MF123703
- Stock Number
- 25G63A
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
- 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; Wireless Phone Projection; 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; Front Premium Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Rear Premium Floor Liners with Removable Carpet Insert; 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; Spray-On Pickup Box Bed Liner with AT4 Logo; AM/FM Stereo with Premium GMC Infotainment System; 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
- Apple CarPlay/Android Auto smart device wireless mirroring
- 4G LTE Wi-Fi Hotspot capable mobile hotspot internet access
- HD Rear Vision Camera w/Hitch View rear mounted camera
- Brake assist system
- Cruise control with steering wheel mounted controls
- Ventilated driver and front passenger seats
- Keyfob remote start
- Heated steering wheel
- Heated driver and front passenger seats
- Heated rear seats
- Leather front seat upholstery
- Primary monitor touchscreen
- 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
- Teen Driver restricted driving mode/alerts
- Keyless Open/Keyless Start with hands-free access and push button start
- Keyfob window control
- Bluetooth wireless audio streaming
- Hitch Guidance vehicle to trailer hitching assist
- GMC ProGrade Trailering System trailer light test
- GMC ProGrade Trailering System trailer light malfunction warning
- GMC ProGrade Trailering System trailer theft alarm
- Dual-zone front climate control
- Immobilizer
- 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
- Hill Descent Control (HDC)
- Hill start assist
- Automatic climate control
- Rear Seat Reminder rear seat check warning
- 1 exterior 120V AC power outlet
- LED daytime running lights
- LED brake lights
- LED front fog lights
- Leather and aluminum steering wheel
- BedStep integrated side steps
- EZ Lift
- Easy lower tailgate
- Integrated tailgate step
- Trailer hitch light
- Manual rear child safety door locks
- Heated driver and passenger side door mirrors
Standard 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 with 360L
- Premium audio system: Premium GMC Infotainment System
- Primary LCD size: 8.0"
- Smart device integration: Android Auto/Apple CarPlay
- 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 tank capacity: 36.0gal.
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Rear locking differential
- Standard fuel economy fuel type: gasoline
- 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")
- 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
- 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).
* The advertised price does not include sales tax, vehicle registration fees, other fees required by law, finance charges and any documentation charges. A negotiable administration fee, up to $115, may be added to the price of the vehicle.
* Images, prices, and options shown, including vehicle color, trim, options, pricing and other specifications are subject to availability, incentive offerings, current pricing and credit worthiness.
* While every reasonable effort is made to ensure the accuracy of this data, we are not responsible for any errors or omissions contained on these pages. Please verify any information in question with a dealership sales representative.