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Used 2020 GMC Sierra 3500HD Denali
VIN: 1GT49WEY4LF120975
Stock #: LF120975
127,673 mi.
Vehicle Details
Trans.:10-Speed Automatic
Drivetrain:Four Wheel Drive
Engine: Duramax 6.6L V8 Turbodiesel
Fuel Type:Diesel
Ext. Color:Quicksilver Metallic
Int. Color:Jet Black
Port Lavaca Price
$49,995
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The 2020 GMC Sierra 3500HD Denali in Quicksilver Metallic with Jet Black interior delivers heavy-duty Duramax diesel power, premium Denali refinement, and 4WD capability for drivers who want serious truck strength without giving up first-class comfort. Powered by a Duramax 6.6L V8 Turbodiesel engine and paired with a 10-speed automatic transmission, this Sierra 3500HD Denali brings massive torque, confident towing performance, and smooth power delivery in a truck built to handle real work while still looking every bit the high-end pickup it is. With 127,673 miles, this Denali still offers strong value, upscale presence, and the kind of broad heavy-duty appeal that keeps a well-equipped diesel truck in demand.
Entertainment and Connectivity Features
• Large touchscreen infotainment display
• Apple CarPlay integration
• Android Auto integration
• Bluetooth® hands-free connectivity
• Built-in navigation capability
• Premium audio system
• Wireless phone charging
• USB charging and media ports
• Steering wheel mounted audio and phone controls
• Voice recognition capability
Added Features
• Denali premium trim package
• Quicksilver Metallic exterior
• Jet Black interior
• 4WD capability
• Duramax 6.6L V8 Turbodiesel performance
• Crew Cab configuration
• Premium leather-appointed seating
• Heated and ventilated front seats
• Power-adjustable front seats with memory settings
• Chrome Denali-specific exterior accents
• Advanced trailering technology
• Strong towing and hauling appeal
Safety Features
• Forward Collision Alert
• Automatic Emergency Braking capability
• Lane Departure Warning capability
• Following Distance Indicator
• HD rear vision camera
• Front and rear park assist
• Electronic Stability Control
• Anti-lock braking system
• Advanced airbag system
• Trailer sway control
Standard Features
• LED headlamps and LED daytime running lights
• Premium alloy wheels
• Dual-zone automatic climate control
• Power windows and door locks
• Remote start capability
• Push-button start
• Spacious Crew Cab interior
• Rear seat air vents
• Power-folding side mirrors
• Premium interior trim and accents
Mechanical Features
• Duramax 6.6L V8 Turbodiesel engine
• 10-speed automatic transmission
• Four-wheel drive
• Heavy-duty suspension system
• Four-wheel disc brakes
• Electric power steering
• Integrated towing capability
• Strong diesel torque for towing and hauling
• Built for heavy-duty work, travel, and demanding use
• Smooth long-haul diesel performance
Why drivers choose Port Lavaca Auto Group for their next vehicle
• Trusted dealership serving Texas drivers with transparent, pressure-free buying experiences
• Large selection of quality SUVs, trucks, and cars ready for immediate delivery
• Knowledgeable product specialists who help match drivers with the right vehicle
• Flexible financing options for a wide range of buyers
• Ongoing customer support and service after the sale
• Strong reputation backed by consistent five-star Google reviews
Customer Review Highlight
We shopped around quite a bit before buying, and Port Lavaca Auto Group stood out right away. They were professional, easy to talk to, and made sure everything was clear from start to finish.
Heather W., March 2026
From its proven Duramax diesel power and 4WD capability to its premium Denali trim and upscale Crew Cab comfort, the 2020 GMC Sierra 3500HD Denali is built for drivers who want heavy-duty truck capability, refined luxury, and the confidence to Tow, haul, and travel without compromise.
Entertainment and Connectivity Features
• Large touchscreen infotainment display
• Apple CarPlay integration
• Android Auto integration
• Bluetooth® hands-free connectivity
• Built-in navigation capability
• Premium audio system
• Wireless phone charging
• USB charging and media ports
• Steering wheel mounted audio and phone controls
• Voice recognition capability
Added Features
• Denali premium trim package
• Quicksilver Metallic exterior
• Jet Black interior
• 4WD capability
• Duramax 6.6L V8 Turbodiesel performance
• Crew Cab configuration
• Premium leather-appointed seating
• Heated and ventilated front seats
• Power-adjustable front seats with memory settings
• Chrome Denali-specific exterior accents
• Advanced trailering technology
• Strong towing and hauling appeal
Safety Features
• Forward Collision Alert
• Automatic Emergency Braking capability
• Lane Departure Warning capability
• Following Distance Indicator
• HD rear vision camera
• Front and rear park assist
• Electronic Stability Control
• Anti-lock braking system
• Advanced airbag system
• Trailer sway control
Standard Features
• LED headlamps and LED daytime running lights
• Premium alloy wheels
• Dual-zone automatic climate control
• Power windows and door locks
• Remote start capability
• Push-button start
• Spacious Crew Cab interior
• Rear seat air vents
• Power-folding side mirrors
• Premium interior trim and accents
Mechanical Features
• Duramax 6.6L V8 Turbodiesel engine
• 10-speed automatic transmission
• Four-wheel drive
• Heavy-duty suspension system
• Four-wheel disc brakes
• Electric power steering
• Integrated towing capability
• Strong diesel torque for towing and hauling
• Built for heavy-duty work, travel, and demanding use
• Smooth long-haul diesel performance
Why drivers choose Port Lavaca Auto Group for their next vehicle
• Trusted dealership serving Texas drivers with transparent, pressure-free buying experiences
• Large selection of quality SUVs, trucks, and cars ready for immediate delivery
• Knowledgeable product specialists who help match drivers with the right vehicle
• Flexible financing options for a wide range of buyers
• Ongoing customer support and service after the sale
• Strong reputation backed by consistent five-star Google reviews
Customer Review Highlight
We shopped around quite a bit before buying, and Port Lavaca Auto Group stood out right away. They were professional, easy to talk to, and made sure everything was clear from start to finish.
Heather W., March 2026
From its proven Duramax diesel power and 4WD capability to its premium Denali trim and upscale Crew Cab comfort, the 2020 GMC Sierra 3500HD Denali is built for drivers who want heavy-duty truck capability, refined luxury, and the confidence to Tow, haul, and travel without compromise.
Standard Features
- Navigation System
- Cargo Convenience Package
- Denali Ultimate Package
- Driver Alert Package I
- Driver Alert Package II
- Gooseneck/5th Wheel Package
- Gooseneck/5th Wheel Prep Package
- Preferred Equipment Group 5SA
- Technology Package
- 7 Speakers
- AM/FM radio: SiriusXM with 360L
- Bose Premium 7 Speaker Sound System
- HD Radio
- Premium audio system: Premium GMC Infotainment System
- Radio: AM/FM w/Prem GMC Infotainment System & Navi
- SiriusXM w/360L
- Steering Wheel Audio Controls
- Air Conditioning
- Automatic temperature control
- Electric Rear-Window Defogger
- Front dual zone A/C
- Rear window defroster
- 12-Volt Rear Auxiliary Power Outlet
- 120-Volt Bed Mounted Power Outlet
- 120-Volt Instrument Panel Power Outlet
- Driver Memory
- Memory seat
- Power driver seat
- Power Front Passenger Windows w/Express Up/Down
- Power Front Windows w/Driver Express Up/Down
- Power Rear Windows w/Express Down
- Power steering
- Power windows
- Remote keyless entry
- Remote Vehicle Starter System
- Steering wheel mounted audio controls
- Universal Home Remote
- Manual Tilt-Wheel/Telescoping Steering Column
- Speed-sensing steering
- Traction control
- 4-Wheel Disc Brakes
- ABS brakes
- Dual front impact airbags
- Dual front side impact airbags
- Electrical Lock Control Steering Column
- Front anti-roll bar
- Front wheel independent suspension
- Keyless Open & Start
- Low tire pressure warning
- Occupant sensing airbag
- Overhead airbag
- Power Door Locks
- Power Sunroof
- Pickup Bed
- Brake assist
- Electronic Stability Control
- Lane Departure Warning System
- Auto High-beam Headlights
- Delay-off headlights
- Front fog lights
- Fully automatic headlights
- Panic alarm
- Security system
- Unauthorized Entry Theft-Deterrent System
- Speed control
- 2-Speed Active Transfer Case
- 220 Amp Alternator
- Engine Block Heater
- Exhaust Brake
- Heavy-Duty 80 Amp Battery
- 6″ Rectangular Chromed Tubular Assist Steps
- Auto-dimming door mirrors
- Bumpers: body-color
- Front License Plate Kit
- Heated door mirrors
- IntelliBeam Automatic High Beam On/Off
- LED Cargo Area Lighting
- Polished Exhaust Tip
- Power door mirrors
- ProGrade Trailering System
- Rear step bumper
- Signature Denali Grille w/High Gloss Black Mesh
- Spray-On Pickup Bed Liner w/Denali Logo
- Turn signal indicator mirrors
- Winter Grille Cover
- 2 USB Ports (First Row)
- 2 USB Ports Inside Console
- 2nd Row Dual USB Charge-Only Ports
- 4G LTE Wi-Fi Hotspot Capable
- All-Weather Floor Liners (LPO)
- Apple CarPlay/Android Auto
- Auto-Dimming Inside Rearview Mirror w/Camera
- Auto-dimming Rear-View mirror
- Automatic Emergency Braking
- Bed View Camera
- Compass
- Compass Located In Instrument Cluster
- Console-Mounted Safe (LPO)
- Driver door bin
- Driver vanity mirror
- Floor-Mounted Center Console
- Following Distance Indicator
- Forward Collision Alert
- Front reading lights
- Garage door transmitter
- Genuine wood console insert
- Genuine wood door panel insert
- GMC Connected Access Capable
- HD Rear Vision Camera
- HD Surround Vision w/2 Trailer View Camera Provisions
- Heated steering wheel
- Illuminated entry
- Lane Change Alert w/Side Blind Zone Alert
- Multicolor 15″ Diagonal Head-Up Display
- OnStar & GMC Connected Services Capable
- Outside temperature display
- Overhead console
- Passenger vanity mirror
- Rear Cross Traffic Alert
- Rear reading lights
- Rear seat center armrest
- Rear Underseat Storage (LPO)
- Safety Alert Seat
- Tachometer
- Telescoping steering wheel
- Tilt steering wheel
- Trailer Tire Pressure Monitor Sensors
- Trip computer
- Ultrasonic Front & Rear Park Assist
- Voltmeter
- Wireless Charging
- 10-Way Power Driver Seat Adjuster w/Lumbar
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- 2nd Row Heated Outboard Seats
- Forge Perforated Leather-Appointed Seat Trim
- Front Bucket Seats
- Front Center Armrest
- Heated Driver & Front Outboard Passenger Seats
- Heated front seats
- Heated rear seats
- Power passenger seat
- Split folding rear seat
- Ventilated Driver & Front Passenger Seats
- Ventilated front seats
- Passenger door bin
- Chrome Recovery Hooks
- Hitch Guidance w/Hitch View
- In-Vehicle Trailering System App
- Integrated Trailer Brake Controller
- Alloy wheels
- Deep-Tinted Glass
- Power Sliding Rear Window w/Defogger
- Variably intermittent wipers
- 3.42 Rear Axle Ratio
- 3.73 Rear Axle Ratio
VEHICLE DATA
Certain specifications, prices and equipment data have been provided under license from Chrome Data Solutions (\’Chrome Data\’). © 2026 Chrome Data Solutions, LP. All Rights Reserved. This information is supplied for personal use only and may not be used for any commercial purpose whatsoever without the express written consent of Chrome Data. Chrome Data makes no guarantee or warranty, either expressed or implied, including without limitation any warranty of merchantability or fitness for particular purpose, with respect to the data presented here. All specifications, prices and equipment are subject to change without notice.
ESTIMATE MPG
EPA mileage ratings are supplied by Chrome Data Solutions, LP for comparison purposes only. Your actual mileage will vary, depending on how you drive and maintain your vehicle, driving conditions, battery pack age/condition (hybrid models only) and other factors.
Based on 2019 EPA mileage ratings. Your MPGe/MPG and driving range will vary depending on driving conditions, how you drive and maintain your vehicle, battery-pack age/condition, and other factors.
PRICING
Vehicle pricing is believed to be accurate. Tax, title and registration are not included in prices shown unless otherwise stated. Manufacturer incentives may vary by region and are subject to change. Vehicle information & features are based upon standard equipment and may vary by vehicle. Dealer doc fee $225.00 not included in price. Monthly payments may be higher or lower based upon incentives, qualifying programs, credit qualifications, residency & fees. No claims, or warranties are made to guarantee the accuracy of vehicle pricing, payments or actual equipment. Call to confirm accuracy of any information.
Manufacturer’s Rebate subject to residency restrictions. Any customer not meeting the residency restrictions will receive a dealer discount in the same amount of the manufacturer’s rebate.
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