Vehicle Details
Discover the rugged luxury of this 2020 GMC Sierra 2500 Denali 4WD, now available in Tullahoma, TN. Powered by a robust V8 6.6L Diesel engine, this heavy-duty pickup delivers exceptional towing capability, impressive torque, and diesel efficiency for demanding jobs or weekend adventures. Finished with premium Denali trim, this GMC Sierra combines capability and comfort with advanced features like Navigation, Remote Start, and a Heated Steering Wheel for year-round convenience. Equipped with an Off-Road Package, this GMC Sierra 2500 is ready for rough terrain and tough conditions while maintaining refined interior appointments and a smooth ride. The CARFAX 1-Owner history provides added peace of mind, reflecting careful maintenance and responsible ownership. Whether hauling a trailer or cruising the highway, the 4WD system and diesel powertrain ensure confidence in all driving situations. We're offering the best price on this 2020 GMC Sierra 2500 Denali in Tullahoma a competitive value for buyers seeking performance, luxury, and reliability. Schedule a test drive today to experience the power of the 6.6L Diesel V8 and the sophisticated Denali features firsthand. Contact us for vehicle details, financing options, and to lock in this exceptional deal before it's gone.
Equipment
This 3/4 ton pickup features steering wheel audio controls. Apple CarPlay: Seamless smartphone integration for this GMC Sierra - stay connected and entertained on the go! This 2020 GMC Sierra 2500 has a clean CARFAX vehicle history report. An off-road package is equipped on this vehicle. The leather seats in this vehicle are a must for buyers looking for comfort, durability, and style. This 2020 GMC Sierra 2500 features a hands-free Bluetooth phone system. This 2020 GMC Sierra 2500 warns of approaching vehicles with Cross-Traffic Alert. This vehicle's Lane Departure Warning helps keep you in your lane. Good News! This certified CARFAX 1-owner vehicle has only had one owner before you. Never get into a cold vehicle again with the remote start feature on this 3/4 ton pickup. The installed navigation system will keep you on the right path. It features a high end BOSE stereo system. The vehicle is pure luxury with a heated steering wheel.
Packages
Technology Package: HD Surround Vision with 2 Trailer View Camera Provisions; Multicolor 15" Diagonal Head-Up Display; Keyless Open and Start; Bed View Camera; Rear Camera Mirror. Denali Ultimate Package: Power Sunroof. Preferred Equipment Group 5SA: HD Rear Vision Camera; LED Cargo Area Lighting; Remote Vehicle Starter System; 2 USB Ports (1st Row); Power Sliding Rear Window with Defogger; Safety Alert Seat; Electric Rear-Window Defogger; Floor-Mounted Center Console; Unauthorized Entry Theft-Deterrent System; Signature Denali Grille; Compass Located in Instrument Cluster; Electrical Lock Control Steering Column; Driver Alert Package II; 120-Volt Instrument Panel Power Outlet; LED Smoked Amber Roof Marker Lamps; Heated Driver and Front Outboard Passenger Seats; Wireless Charging; X31 Off-Road Package; Steering Wheel Audio Controls; Universal Home Remote; Driver Alert Package I; 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 Denali Logo; Power Rear Windows with Express Down; Integrated Trailer Brake Controller; Premium GMC Infotainment System Radio with Navigation; 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; 6" Rectangular Chromed Tubular Assist Steps; 12-Volt Rear Auxiliary Power Outlet; 2 USB Ports; Polished Exhaust Tip; Power Door Locks; Chrome Recovery Hooks. Gooseneck/5th Wheel Package: Gooseneck/5th Wheel Prep Package. Power Sunroof. Carbon Black Metallic. Bed View Camera. Trailer Tire Pressure Monitor Sensors. **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
Pricing of vehicles on this web site does not include options that may have been installed at the Dealership. Pricing may include current promotions, incentives, and/or bonus cash. Pricing does not' include tax, title, license or $599.00 processing fee. Please contact the Dealership for the latest pricing and monthly payment. Published price subject to change without notice to correct errors or omissions or in the event of inventory fluctuation
Used 2020 GMCSierra 2500HD Denali Truck Crew Cab
- Exterior Color
- Carbon Black
- Interior Color
- Jet Black
- Odometer
- 79,389 miles
- Body/Seating
- Truck Crew Cab/5 seats
- Transmission
- Automatic
- Drivetrain
- 4x4
- Engine
- V-8 cyl
- VIN
- 1GT49REY8LF193395
- Stock Number
- C2766A
GMC
Sierra 2500HD
Highlighted Features
- Navigation system
- Lane departure
- Leather upholstery
- Automatic temperature control
- Power moonroof
- Premium audio system
- Wireless phone connectivity
- Parking sensors
- Exterior parking camera front
- Exterior parking camera left
- Exterior parking camera right
- Exterior parking camera rear
Included Packages & Accessories
- Trailer Tire Pressure Monitor Sensors
- Pickup Box
- Technology Package
- HD Surround Vision w/2 Trailer View Camera Provisions
- Rear Camera Mirror
- Keyless Open & Start
- Bed View Camera
- Multicolor 15" Diagonal Head-Up Display
- Denali Ultimate Package
- Power Sunroof
- Preferred Equipment Group 5SA
- Driver Alert Package I
- Ultrasonic Front & Rear Park Assist
- Lane Change Alert w/Side Blind Zone Alert
- Rear Cross Traffic Alert
- Driver Alert Package II
- Forward Collision Alert
- Lane Departure Warning
- Automatic Emergency Braking
- IntelliBeam Automatic High Beam On/Off
- Following Distance Indicator
- Safety Alert Seat
- Radio: Premium GMC Infotainment Sys w/Navigation
- Bose Premium 7 Speaker Sound System
- SiriusXM w/360L
- HD Radio
- Floor-Mounted Center Console
- Compass Located In Instrument Cluster
- Electric Rear-Window Defogger
- Power Door Locks
- Remote Vehicle Starter System
- OnStar & GMC Connected Services Capable
- 4G LTE Wi-Fi Hotspot Capable
- GMC Connected Access 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
- Universal Home Remote
- Power Sliding Rear Window w/Defogger
- Power Windows w/Driver Express Up/Down
- Power Front Passenger Windows w/Express Up/Down
- Power Rear Windows w/Express Down
- Wireless Charging
- Spray-On Pickup Box Bed Liner w/Denali Logo
- 6" Rectangular Chromed Tubular Assist Steps
- Deep-Tinted Glass
- Signature Denali Grille
- LED Smoked Amber Roof Marker Lamps
- LED Cargo Area Lighting
- Rear Wheelhouse Liners
- Chrome Recovery Hooks
- Polished Exhaust Tip
- X31 Off-Road Package
- Off-Road Suspension
- Hill Descent Control
- Skid Plates
- Integrated Trailer Brake Controller
- ProGrade Trailering System
- Hitch Guidance w/Hitch View
- In-Vehicle Trailering System App
- Engine: 6.6L V8 w/Direct Injection & VVT
- Heavy-Duty 80 Amp Battery
- GVWR: 10,650 lbs
- 2-Speed Active Transfer Case
- Gooseneck/5th Wheel Package
- Gooseneck/5th Wheel Prep Package
- Transmission: Allison 10-Speed Automatic
- GVWR: 11,350 lbs
- Winter Grille Cover
- Engine Block Heater
- Front Bucket Seats
- 10-Way Power Driver Seat Adjuster w/Lumbar
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- Driver Memory
- 3.42 Axle Ratio
- Engine: Duramax 6.6L Turbo-Diesel V8
- Capped Fuel Fill
- 220 Amps Alternator
- Dual Heavy-Duty 70 Amp Battery
- Exhaust Brake
Included Packages & Options
- Engine: Duramax 6.6L Turbo-Diesel V8$9,750
- Capped Fuel Fill
- 220 Amps Alternator
- Dual Heavy-Duty 70 Amp Battery
- Winter Grille Cover
- Exhaust Brake
- Engine Block Heater
- 3.42 Axle Ratio
- Transmission: Allison 10-Speed Automatic
- GVWR: 11,350 lbs
- Denali Ultimate Package$2,370
- Technology Package
- Power Sunroof
- Technology Package$1,875
- HD Surround Vision w/2 Trailer View Camera Provisions
- Rear Camera Mirror
- Keyless Open & Start
- Bed View Camera
- Multicolor 15" Diagonal Head-Up Display
- Gooseneck/5th Wheel Package$795
- Gooseneck/5th Wheel Prep Package
- Bed View Camera
Included Options
- Trailer Tire Pressure Monitor Sensors$50
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
- Garage door transmitter
- Heated steering wheel
- Illuminated entry
- Memory seat
- Navigation system
- Overhead console
- Passenger door bin
- Passenger vanity mirror
- Power moonroof
- Power windows
- Proximity key: doors and push button start
- Rear beverage holders
- Rear door bins
- Remote engine start: keyfob
- Remote keyless entry
- Speed control
- Sunroof sunshade: manual
- Telescoping steering wheel
- Tilt steering wheel
- Alloy wheels
- Front anti-roll bar
- Front tires: 275/65SR20.0E
- Front wheel independent suspension
- Power steering
- Rear tires: 275/65SR20.0E
- Single rear wheels
- Speed-sensing steering
- Tires: all-terrain
- Wheel size: 20"
- 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
- Speaker type: Bose
- Speakers: 7
- Steering wheel mounted audio controls
- Wireless phone connectivity: Bluetooth
- Front center armrest
- Front seats: bucket
- Genuine wood console insert
- Genuine wood door panel insert
- 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
- Block heater
- Compressor: intercooled turbo
- 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.
- Horsepower: 445hp @ 2,800RPM
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Number of valves: 32
- Rear locking differential
- Recommended fuel: Diesel
- Torque: 910 lb.-ft. @ 1,600RPM
- Transmission: 10 speed automatic
- Variable valve control
- Ground clearance (min): 257mm (10.1")
- Auto-dimming door mirrors
- Bedliner
- Bumpers: body-color
- Door mirrors: chrome
- Heated door mirrors
- Left rear passenger door: conventional
- Power door mirrors
- Rear cargo: tailgate
- Rear step bumper
- Right rear passenger: conventional
- Skid plates
- Tailpipe finisher: polished
- Trailer hitch receiver
- Trailer sway control
- Turn signal indicator mirrors
- Compression ratio: 16.00 to 1
- Curb weight: 3,515kg (7,749lbs)
- Engine bore x stroke: 103.0mm x 99.0mm (4.06" x 3.90")
- Engine displacement: 6.6 L
- Engine horsepower: 445hp @ 2,800RPM
- Engine torque: 910 lb.-ft. @ 1,600RPM
- 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")
- Payload: 1,616kg (3,563lbs)
- 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
- Auto high-beam headlights
- Blind spot: Lane Change Alert with Side Blind Zone Alert warning
- Compass
- Delay-off headlights
- Exterior parking camera cargo
- Exterior parking camera front
- Exterior parking camera left
- Exterior parking camera rear: HD Surround Vision yes
- Exterior parking camera right
- Front fog lights
- Front reading lights
- Fully automatic headlights
- Heads up display
- Lane departure: Lane Departure Warning warning
- Low tire pressure warning
- Oil pressure gauge
- Outside temperature display
- Parking sensors: UltraSonic front and rear
- 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
- Forward collision: Forward Collision Alert with Automatic Braking mitigation
- Ignition disable
- Occupant sensing airbag
- Overhead airbag
- Panic alarm
- Perimeter/approach lights
- Rear collision: Rear Cross-Traffic Alert warning
- Security system
- Traction control
Standard Features
- Capped Fuel Fill
- 220 Amps Alternator
- Dual Heavy-Duty 70 Amp Battery
- Winter Grille Cover
- Exhaust Brake
- Engine Block Heater
- 3.42 Axle Ratio
- Transmission: Allison 10-Speed Automatic
- GVWR: 11,350 lbs
- Technology Package
- Power Sunroof
- HD Surround Vision w/2 Trailer View Camera Provisions
- Rear Camera Mirror
- Keyless Open & Start
- Bed View Camera
- Multicolor 15" Diagonal Head-Up Display
- Gooseneck/5th Wheel Prep Package
- Bed View Camera
- Forward Collision Alert
- Lane Departure Warning
- Automatic Emergency Braking
- IntelliBeam Automatic High Beam On/Off
- Following Distance Indicator
- Bose Premium 7 Speaker Sound System
- SiriusXM w/360L
- HD Radio
- 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
- Skid Plates
- Driver Alert Package I
- Driver Alert Package II
- Safety Alert Seat
- Radio: Premium GMC Infotainment Sys w/Navigation
- Floor-Mounted Center Console
- Compass Located In Instrument Cluster
- 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
- Universal Home Remote
- Power Sliding Rear Window w/Defogger
- Power Windows w/Driver Express Up/Down
- Power Front Passenger Windows w/Express Up/Down
- Power Rear Windows w/Express Down
- Wireless Charging
- Spray-On Pickup Box Bed Liner w/Denali Logo
- 6" Rectangular Chromed Tubular Assist Steps
- Deep-Tinted Glass
- Signature Denali Grille
- LED Smoked Amber Roof Marker Lamps
- LED Cargo Area Lighting
- Rear Wheelhouse Liners
- Chrome Recovery Hooks
- Polished Exhaust Tip
- X31 Off-Road Package
- Integrated Trailer Brake Controller
- ProGrade Trailering System
- Engine: 6.6L V8 w/Direct Injection & VVT
- 2-Speed Active Transfer Case
- Ultrasonic Front & Rear Park Assist
- Lane Change Alert w/Side Blind Zone Alert
- Rear Cross Traffic Alert
- Heavy-Duty 80 Amp Battery
- GVWR: 10,650 lbs
- Hitch Guidance w/Hitch View
- In-Vehicle Trailering System App
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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