Recent Arrival! 2021 Summit White GMC Sierra 2500HD SLE 4WD 6-Speed Automatic 6.6L V8 WTP, This GMC Sierra 2500HD has many features and is well equipped including, Lifetime Oil Changes, Accident Free Carfax, Bluetooth, Carfax One-Owner, Keyless Entry, Rear Backup Camera, **SIRIUS/XM SATELLITE RADIO**, Tow Package, All Wheel Drive / 4x4, USB, Bluetooth Hands Free, 10-Way Power Driver Seat Adjuster w/Lumbar, 12-Volt Rear Auxiliary Power Outlet, 17" Machined Aluminum Wheels, 2-Speed Active Transfer Case, 2-Speed Electronic Shift Transfer Case, 2nd Row Dual USB Charge-Only Ports, 3.73 Rear Axle Ratio, 4-Way Manual Driver Seat Adjuster, 4-Way Manual Passenger Seat Adjuster, 4-Wheel Disc Brakes, 4G LTE Wi-Fi Hotspot Capable, 5th Wheel & Gooseneck Trailer Wiring Provisions, 6 Speakers, 6-Speaker Audio System Feature, A/C w/Dual-Zone Automatic Climate Control, ABS brakes, Air Conditioning, Alloy wheels, AM/FM radio: SiriusXM, Apple CarPlay/Android Auto, Auto-Dimming Inside Rear-View Mirror, Brake assist, Bumpers: chrome, Chrome Surround Grille w/High Gloss Black Mesh, Cloth Seat Trim, Compass, Compass Located In Instrument Cluster, Deep-Tinted Glass, Delay-off headlights, Driver Alert Package I, Driver door bin, Driver vanity mirror, Dual front impact airbags, Dual front side impact airbags, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, Electronic Stability Control, Engine Block Heater, Front 40/20/40 Split-Bench Seats, Front 40/20/40 Split-Bench Seats w/Lockable Storage, Front anti-roll bar, Front Center Armrest w/Storage, Front License Plate Kit, Front reading lights, Front wheel independent suspension, Fully automatic headlights, GMC Connected Access Capable, Heated door mirrors, Heated Driver & Front Outboard Passenger Seats, Heated Steering Wheel, Heavy-Duty 80 Amp Battery, Illuminated entry, Integrated Trailer Brake Controller, Keyless Open & Start, Lane Change Alert w/Side Blind Zone Alert, LED Cargo Area Lighting, LED Fog Lamps, LED Smoked Amber Roof Marker Lamps, Low tire pressure warning, Manual Tilt Wheel Steering Column, Manual Tilt-Wheel/Telescoping Steering Column, Occupant sensing airbag, OnStar & GMC Connected Services Capable, Outside temperature display, Overhead airbag, Overhead console, Panic alarm, Passenger door bin, Passenger vanity mirror, Perimeter Lighting, Pickup Box, Power Door Locks, Power door mirrors, Power Front Windows w/Passenger Express Down, Power Rear Windows w/Express Down, Power steering, Power windows, Power Windows w/Driver Express Up/Down, Power-Adjustable Black Outside Mirrors, Preferred Equipment Group 3SA, Premium audio system: GMC Infotainment System, Radio: AM/FM w/GMC Infotainment System, Rear Cross Traffic Alert, Rear reading lights, Rear step bumper, Rear Wheelhouse Liners, Remote Keyless Entry, Remote keyless entry, Remote Vehicle Starter System, Rubberized-Vinyl Floor Covering, SiriusXM Radio, SLE Convenience Package, Speed control, Split folding rear seat, Standard Tailgate, Steering Wheel Audio Controls, Steering wheel mounted audio controls, Suspension Package, Tachometer, Tilt steering wheel, Traction control, Trip computer, Turn signal indicator mirrors, Ultrasonic Front & Rear Park Assist, Unauthorized Entry Theft-Deterrent System, Upfitter Switch Kit (5), Variably intermittent wipers, Voltmeter.
Clean CARFAX. CARFAX One-Owner.
The Seth Wadley Promise is a Lifetime Engine Guarantee, Lifetime Oil Changes, Lifetime Multi-point Inspections, Lifetime Pre-Vacation Vehicle Check-Up, Identity Theft Protection for 1 year, Road Hazard Tire & Wheel Coverage for 1 year, Dent & Ding Coverage for 1 year, Windshield Coverage for 1 year, Towing for 1 year, Enrollment in our Difference Rewards Program. All at NO COST to you! Come Experience the Seth Wadley Difference!!
Used 2021 GMCSierra 2500 HD SLE Truck Crew Cab
- Exterior Color
- Summit White
- Interior Color
- Jet Black
- Odometer
- 132,660 miles
- Transmission
- 6 speed automatic
- Drivetrain
- 4x4
- Engine
- V-8 cyl
- VIN
- 1GT49ME78MF306368
- Stock Number
- SS2920
GMC
Sierra 2500 HD
Highlighted Features
- Wireless phone connectivity
- Split folding rear seat
- Perimeter/approach lights
- Remote keyless entry
- Steering wheel mounted audio controls
- Fully automatic headlights
- Alloy wheels
- Heated door mirrors
- Trailer hitch receiver
- Trailer sway control
Included Packages & Accessories
- Suspension Package
- 6 Speakers
- AM/FM radio: SiriusXM
- Premium audio system: GMC Infotainment System
- Air Conditioning
- Power steering
- Power windows
- Remote keyless entry
- Steering wheel mounted audio controls
- 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
- Pickup Box
- Brake assist
- Electronic Stability Control
- Delay-off headlights
- Fully automatic headlights
- Panic alarm
- Speed control
- 2-Speed Active Transfer Case
- Engine Block Heater
- Heavy-Duty 80 Amp Battery
- Bumpers: chrome
- Front License Plate Kit
- Heated door mirrors
- Power door mirrors
- Rear step bumper
- Standard Tailgate
- Turn signal indicator mirrors
- Apple CarPlay/Android Auto
- Auto-Dimming Inside Rear-View Mirror
- Cloth Seat Trim
- Compass
- Driver door bin
- Driver vanity mirror
- Front reading lights
- Illuminated entry
- Outside temperature display
- Overhead console
- Passenger vanity mirror
- Rear reading lights
- Rubberized-Vinyl Floor Covering
- Tachometer
- Tilt steering wheel
- Trip computer
- Upfitter Switch Kit (5)
- Voltmeter
- Split folding rear seat
- Front Center Armrest w/Storage
- Passenger door bin
- 5th Wheel & Gooseneck Trailer Wiring Provisions
- 17" Machined Aluminum Wheels
- Alloy wheels
- Variably intermittent wipers
- 3.73 Rear Axle Ratio
- WTP
- Lifetime Oil Changes
- Accident Free Carfax
- Bluetooth
- Carfax One-Owner
- Keyless Entry
- Rear Backup Camera
- **SIRIUS/XM SATELLITE RADIO**
- Tow Package
- All Wheel Drive / 4x4
- USB
- Bluetooth Hands Free
- Driver Alert Package I
- Preferred Equipment Group 3SA
- SLE Convenience Package
- 6-Speaker Audio System Feature
- Radio: AM/FM w/GMC Infotainment System
- SiriusXM Radio
- Steering Wheel Audio Controls
- A/C w/Dual-Zone Automatic Climate Control
- Electric Rear-Window Defogger
- 12-Volt Rear Auxiliary Power Outlet
- 4-Way Manual Driver Seat Adjuster
- Power Front Windows w/Passenger Express Down
- Power Windows w/Driver Express Up/Down
- Remote Keyless Entry
- Remote Vehicle Starter System
- Manual Tilt Wheel Steering Column
- Manual Tilt-Wheel/Telescoping Steering Column
- Electrical Lock Control Steering Column
- Keyless Open & Start
- Power Door Locks
- Perimeter Lighting
- Unauthorized Entry Theft-Deterrent System
- 2-Speed Electronic Shift Transfer Case
- Chrome Surround Grille w/High Gloss Black Mesh
- LED Cargo Area Lighting
- LED Fog Lamps
- LED Smoked Amber Roof Marker Lamps
- Power-Adjustable Black Outside Mirrors
- Rear Wheelhouse Liners
- 2nd Row Dual USB Charge-Only Ports
- 4G LTE Wi-Fi Hotspot Capable
- Compass Located In Instrument Cluster
- Front 40/20/40 Split-Bench Seats
- Front 40/20/40 Split-Bench Seats w/Lockable Storage
- GMC Connected Access Capable
- Heated Steering Wheel
- Lane Change Alert w/Side Blind Zone Alert
- OnStar & GMC Connected Services Capable
- Rear Cross Traffic Alert
- Ultrasonic Front & Rear Park Assist
- 10-Way Power Driver Seat Adjuster w/Lumbar
- 4-Way Manual Passenger Seat Adjuster
- Heated Driver & Front Outboard Passenger Seats
- Integrated Trailer Brake Controller
- Deep-Tinted Glass
- Power Rear Windows w/Express Down
Included Packages & Options
- SLE Convenience Package$2,330
- A/C w/Dual-Zone Automatic Climate Control
- 10-Way Power Driver Seat Adjuster w/Lumbar
- Heated Driver & Front Outboard Passenger Seats
- Heated Steering Wheel
- Manual Tilt-Wheel/Telescoping Steering Column
- Electric Rear-Window Defogger
- Keyless Open & Start
- Electrical Lock Control Steering Column
- Remote Vehicle Starter System
- Unauthorized Entry Theft-Deterrent System
- Front 40/20/40 Split-Bench Seats w/Lockable Storage
- 2nd Row Dual USB Charge-Only Ports
- LED Cargo Area Lighting
- 12-Volt Rear Auxiliary Power Outlet
- LED Fog Lamps
- LED Smoked Amber Roof Marker Lamps
- Rear Wheelhouse Liners
- Driver Alert Package I$890
- Ultrasonic Front & Rear Park Assist
- Lane Change Alert w/Side Blind Zone Alert
- Rear Cross Traffic Alert
- Perimeter Lighting
- Power-Adjustable Black Outside Mirrors$510
- Perimeter Lighting
Included Options
- 2-Speed Active Transfer Case$200
- Engine Block Heater$100
- 5th Wheel & Gooseneck Trailer Wiring Provisions$35
Standard Specifications
- 1-touch down
- 1-touch up
- Air conditioning
- Driver door bin
- Driver vanity mirror
- Front beverage holders
- Illuminated entry
- Overhead console
- Passenger door bin
- Passenger vanity mirror
- Power windows
- Rear door bins
- Remote keyless entry
- Speed control
- Tilt steering wheel
- Alloy wheels
- Front anti-roll bar
- Front wheel independent suspension
- Power steering
- Single rear wheels
- 1st row LCD monitors: 2
- AM/FM radio: SiriusXM
- Primary LCD size: 8.0"
- Speakers: 6
- Steering wheel mounted audio controls
- Wireless phone connectivity: Bluetooth
- Front center armrest: w/storage
- Rear seats: split-bench
- Rear seats Folding position: fold-up cushion
- Seat Upholstery: cloth
- Split folding rear seat
- 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): 256mm (10.1")
- Bumpers: chrome
- Heated door mirrors
- Left rear passenger door: conventional
- Power door mirrors
- Rear cargo: tailgate
- Rear step bumper
- Right rear passenger: conventional
- 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: 6,759mm (266.1")
- 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: 8.7m (28.5')
- Wheelbase: 4,369mm (172.0")
- Appearance: analog
- Compass
- Delay-off headlights
- Front reading lights
- Fully automatic headlights
- Low tire pressure warning
- Oil pressure gauge
- Outside temperature display
- Rear reading lights
- 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
- Traction control
Standard Features
- A/C w/Dual-Zone Automatic Climate Control
- 10-Way Power Driver Seat Adjuster w/Lumbar
- Heated Driver & Front Outboard Passenger Seats
- Heated Steering Wheel
- Manual Tilt-Wheel/Telescoping Steering Column
- Electric Rear-Window Defogger
- Keyless Open & Start
- Electrical Lock Control Steering Column
- Remote Vehicle Starter System
- Unauthorized Entry Theft-Deterrent System
- Front 40/20/40 Split-Bench Seats w/Lockable Storage
- 2nd Row Dual USB Charge-Only Ports
- LED Cargo Area Lighting
- 12-Volt Rear Auxiliary Power Outlet
- LED Fog Lamps
- LED Smoked Amber Roof Marker Lamps
- Rear Wheelhouse Liners
- Ultrasonic Front & Rear Park Assist
- Lane Change Alert w/Side Blind Zone Alert
- Rear Cross Traffic Alert
- Perimeter Lighting
- Perimeter Lighting
- 4-Way Manual Driver Seat Adjuster
- 4-Way Manual Passenger Seat Adjuster
- 4G LTE Wi-Fi Hotspot Capable
- GMC Connected Access Capable
- 6-Speaker Audio System Feature
- Radio: AM/FM w/GMC Infotainment System
- SiriusXM Radio
- Compass Located In Instrument Cluster
- Power Door Locks
- Remote Keyless Entry
- OnStar & GMC Connected Services Capable
- Front 40/20/40 Split-Bench Seats
- Steering Wheel Audio Controls
- Manual Tilt Wheel Steering Column
- Deep-Tinted Glass
- Chrome Surround Grille w/High Gloss Black Mesh
- Power Windows w/Driver Express Up/Down
- Power Front Windows w/Passenger Express Down
- Power Rear Windows w/Express Down
- Integrated Trailer Brake Controller
- 2-Speed Electronic Shift Transfer Case
Dealer Notes
KBB.com Consumer Reviews

Overall3.7Out 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… - 3.0
Infotainment system unreliable!
By Brian C | on Friday, June 27, 2025
The servicing dealer has been great, the GM engineers not so much! The truck will without warning have no sound for the radio and the blinkers. GM told the dealership to reprogram then when that didn't work they said replace the amplifier and when that didn't work, they said replace a module, and when that didn't work they said to replace the amplifier again, and when that didn't work they said we know it's a known problem but we don't know how to fix it. All of this with less than 9k miles. The dealer has done everything that GM has asked them to do, but none of it works. It's very frustrating to pay this much for a truck and you can't get the radio to stay working. It also got away from the factory with paint damage and a dent in the hood,( the dent is from the inside out on a double wall). I thought I was upgrading when I went from a F250 Lariat to a Denali, but I may have traded one headache for another.… - 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!…
Based on 15 consumer ratings for 2020–2026 models. | Privacy
* 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.
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