Vehicle Details
Discover exceptional value with this 2021 GMC Sierra 1500 SLT 4WD, now available in Platteville, WI. Powered by a robust V8 5.3L gasoline engine, this truck delivers confident towing and smooth highway performance while offering the luxury and comfort you deserve. The SLT trim includes premium leather seats and a heated steering wheel for year-round comfort, plus steering wheel audio controls to keep your focus on the road. Safety and convenience are built in with a back-up camera for safer reversing and tight-spot maneuvering. This GMC Sierra comes with an AutoCheck Clean Report, providing transparency and peace of mind about the vehicle's history. Whether you need a reliable work truck for tough jobs or a comfortable daily driver with serious capability, this 4WD GMC Sierra checks all the boxes. Located in Platteville, WI, this GMC Sierra 1500 SLT is competitively priced and represents the best price in the area for its condition and features. Don't miss out on one of the most sought-after pre-owned trucks on the marketâ"an excellent mix of power, comfort, and value. Contact us today to schedule a test drive or to request the full AutoCheck report and detailed photos. Drive home a powerful, well-equipped GMC Sierra today.
Equipment
Start this model from inside with remote start. The leather seats in the vehicle are a must for buyers looking for comfort, durability, and style. The steering wheel audio controls on this model keep the volume and station within easy reach. This model has only one previous owner, verified by AutoCheck. This GMC Sierra offers Automatic Climate Control for personalized comfort. Apple CarPlay: Seamless smartphone integration for the GMC Sierra - stay connected and entertained on the go! Protect the vehicle from unwanted accidents with a cutting edge backup camera system. The GMC Sierra features a hands-free Bluetooth phone system. It comes equipped with Android Auto for seamless smartphone integration on the road. This unit has a clean AutoCheck report. Keep your hands warm all winter with a heated steering wheel in this GMC Sierra . A trailer braking system is already installed on this model. Quickly unlock this 1/2 ton pickup with keyless entry.
Packages
SLT Convenience Package: Ventilated Driver and Front Passenger Seats; Heated 2nd Row Outboard Seats; Power Sliding Rear Window with Rear Defogger; 2 USB Ports (1st Row); Floor-Mounted Center Console; Front Bucket Seats; 2 USB Ports; Universal Home Remote. SLT Premium Package: 20 X 9 Polished Aluminum Wheels; Chrome Wheel to Wheel Assist Steps. Preferred Equipment Group 4SA: LED Cargo Area Lighting; Remote Vehicle Starter System; Electric Rear-Window Defogger; 5.3L EcoTec3 V8 Engine; Theft Deterrent System (unauthorized Entry); Chrome Grille; 170 Amp Alternator; Auxiliary External Transmission Oil Cooler; Compass; Electrical Lock Control Steering Column; Trailering Package; 120-Volt Instrument Panel Power Outlet; Heated Driver and Front Outboard Passenger Seating; Steering Wheel Audio Controls; GMC Connected Access Capable; Color-Keyed Carpeting Floor Covering; OnStar and GMC Connected Services Capable; Power Front Passenger Windows with Express Up/down; Deep-Tinted Glass; Premium GMC Infotainment System Radio with Multi-Touch; Power Rear Windows with Express Down; Integrated Trailer Brake Controller; Single Speed Transfer Case; Power Front Windows with Driver Express Up/down; Manual Tilt-Wheel and Telescoping Steering Column; Rear Dual USB Charging-Only Ports; Front Frame-Mounted Black Recovery Hooks; Keyless Open and Start; 4G LTE Wi-Fi Hotspot Capable; ProGrade Trailering System; Rear Wheelhouse Liners; 12-Volt Rear Auxiliary Power Outlet; Auto-Locking Rear Differential; Power Door Locks. 20 X 9 Polished Aluminum Wheels. Chrome Wheel to Wheel Assist Steps. Onyx Black. 275/60R20SL AT BW Tires. **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 SLT
- Exterior Color
- Onyx Black
- Interior Color
- Jet Black
- Odometer
- 52,521 miles
- Transmission
- 10-speed automatic
- Drivetrain
- 4WD
- Engine
- V8, 5.3L
- VIN
- 3GTU9DED1MG139081
- Stock Number
- MG139081
GMC
Sierra
Highlighted Features
- Leather upholstery
- Automatic temperature control
- Wireless phone connectivity
- Front dual zone A/C
- Auto-dimming rearview mirror
- Split folding rear seat
- Memory seat
- Heated front seats
- Perimeter/approach lights
- Remote keyless entry
- Heated steering wheel
- Steering wheel mounted audio controls
Included Packages & Accessories
- SLT Premium Package Discount
- Trim PKG
- Gvwr 7;100 Lbs. (3;221 KG)
- 50-STATE Emissions
- DESTINATION CHARGE
- Onyx Black
- Rear Axle 3.23 Ratio
- Engine: 5.3L Ecotec3 V8 W/ DFM
- Transmission: 10-SPEED Auto
- ALL Terrain Tires
- Customer Dialogue Network
- SLT Convenience Package: Ventilated Driver and Front Passenger Seats; Heated 2nd Row Outboard Seats; Power Sliding Rear Window with Rear Defogger; 2 USB Ports (1st Row); Floor-Mounted Center Console; Front Bucket Seats; 2 USB Ports; Universal Home Remote
- SLT Premium Package: 20 X 9 Polished Aluminum Wheels; Chrome Wheel to Wheel Assist Steps
- Preferred Equipment Group 4SA: LED Cargo Area Lighting; Remote Vehicle Starter System; Electric Rear-Window Defogger; 5.3L EcoTec3 V8 Engine; Theft Deterrent System (unauthorized Entry); Chrome Grille; 170 Amp Alternator; Auxiliary External Transmission Oil Cooler; Compass; Electrical Lock Control Steering Column; Trailering Package; 120-Volt Instrument Panel Power Outlet; Heated Driver and Front Outboard Passenger Seating; Steering Wheel Audio Controls; GMC Connected Access Capable; Color-Keyed Carpeting Floor Covering; OnStar and GMC Connected Services Capable; Power Front Passenger Windows with Express Up/down; Deep-Tinted Glass; Premium GMC Infotainment System Radio with Multi-Touch; Power Rear Windows with Express Down; Integrated Trailer Brake Controller; Single Speed Transfer Case; Power Front Windows with Driver Express Up/down; Manual Tilt-Wheel and Telescoping Steering Column; Rear Dual USB Charging-Only Ports; Front Frame-Mounted Black Recovery Hooks; Keyless Open and Start; 4G LTE Wi-Fi Hotspot Capable; ProGrade Trailering System; Rear Wheelhouse Liners; 12-Volt Rear Auxiliary Power Outlet; Auto-Locking Rear Differential; Power Door Locks
- 20 X 9 Polished Aluminum Wheels
- Chrome Wheel to Wheel Assist Steps
- 275/60R20SL AT BW Tires
- Apple CarPlay/Android Auto smart device 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-time 4WD
- EcoTec3 5.3L V-8 gasoline direct injection
- variable valve control
- regular unleaded
- engine with cylinder deactivation and 355HP
- Teen Driver restricted driving mode/alerts
- Smart key 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 (TSC) trailer sway control
- Trailering Assist Guidelines vehicle and trailer reverse assist with visual graphic guidance only
- Premium GMC Infotainment System external memory control
- Internet radio capability
- StabiliTrak w/Proactive Roll Avoidance electronic stability control system with anti-roll
- Hill Start Assist (HSA)
- Automatic climate control
- Rear seat check warning
- 1 exterior 120V AC power outlet
- LED daytime running lights
- LED brake lights
- LED front fog lights
- Leather and metal-look steering wheel
- EZ Lift
- EZ Lower
- Integrated tailgate step
- Trailer hitch light
- Manual rear child safety door locks
- Heated driver and passenger side door mirrors
- Power driver and passenger door mirrors with tilt down in reverse
- Auto-dimming driver side mirror
- Power folding door mirrors
- Manual tilting steering wheel
- ProGrade Trailering Pkg.
- Certified Pre-Owned-1500
- Aluminum/Alloy Wheels
- Bed Liner
- Bose Premium Stereo
- Fixed Running Boards
- GMC MultiPro Tailgate
- Heated Exterior Mirrors
- Power Adjustable Mirrors
- Power Door Locks
- Power Driver's Seat
- Power Windows
- Rear Parking Sensors
- Steering Wheel Mounted AudioControls
- Univ Garage Door Opener
- V8; EcoTec3; DFM; 5.3 Liter
- Automatic; 10-Spd w/Overdrive
- 4WD
- Hill Start Assist Control
- Traction Control
- StabiliTrak
- ABS (4-Wheel)
- Theft Deterrent System
- Keyless Entry
- Keyless Start
- Air Conditioning
- Cruise Control
- Power Tailgate Release
- Power Steering
- Tilt & Telescoping Wheel
- AM/FM Stereo
- SiriusXM Satellite
- Bluetooth Wireless
- OnStar
- Premium GMC Infotainment System
- Backup Camera
- Dual Air Bags
- Side Air Bags
- F&R Head Curtain Air Bags
- Heated Seats
- Dual Power Seats
- Leather
- HID Headlamps
- Daytime Running Lights
- LED Headlamps
- Fog Lights
- Towing Pkg
- Alloy Wheels
- SLT Premium Package
Included Packages & Options
- SLT Premium Package$3,545
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
- Speed-sensing steering
- 1st row LCD monitors: 2
- Primary LCD size: 8.0"
- Radio data system
- Smart device integration: Android Auto/Apple CarPlay
- Steering wheel mounted audio controls
- Wireless phone connectivity: Bluetooth
- Heated front seats
- Leather upholstery
- 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
- Drive type: four-wheel
- Engine location: front
- Fuel economy city: 14mpg
- Fuel economy combined: 16mpg
- Fuel economy highway: 20mpg
- Fuel tank capacity: 24.0gal.
- 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): 205mm (8.1")
- Auto-dimming door mirrors
- Bumpers: chrome
- Door mirrors: 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
- Exterior body width: 2,063mm (81.2")
- Exterior height: 1,918mm (75.5")
- Exterior length: 5,885mm (231.7")
- 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: 1,019mm (40.1")
- Rear hiproom: 1,530mm (60.2")
- Rear legroom: 1,102mm (43.4")
- Rear shoulder room: 1,655mm (65.2")
- Wheelbase: 3,744mm (147.4")
- 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

Overall4Out of 5
- 3.0
Nice truck
By froggy | on Sunday, December 06, 2020
I purchased this truck brand new and at 3900 miles I started to have a misfire. The warranty put a refurbished rebuilt engine in it. I was not aware that the warranty doesn't put new parts in just refurbished rebuilt parts. I traded in and lost my favorite blue truck. Not a fan of the whole process. Love the truck just not how the warranty went. I would not own another brand or model the 2020 is the nicest riding and looking. Just got a bad motor from the manufacture.… - 5.0
Great Truck
By Mel | on Sunday, April 25, 2021
I love it, I get compliments every where I go, and it apparently worth more than I paid for it brand new, a year and a half later. can't ask for much more than that.… - 5.0
Well done GM
By Tony | on Thursday, November 26, 2020
This truck has a 10 speed transmission that you can barely feel it shift. Traded in an F150 and test drove a similar equipped Ram. Although the Ram was nice, the styling of the GMC won me over, along with the tailgate! It also pulls my boat way better than the Ford, just smoother all around. The cabin is very quiet and the gas mileage is much better than V8 Ford. The cabin is super quiet and the ride is awesome. Love the adaptive cruise control too. The technology is fine and the screen is plenty big. Remember, you are driving this truck, not going to thr drive in! Most importantly, the controls are simple to use and Bose stereo sounds great! Oh, and I got it cheaper than the similar Ram too!…
Based on 88 consumer ratings for 2019–2025 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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