Used 2021 GMCSierra 1500 SLT
- Exterior Color
- Quicksilver
- Interior Color
- Dark Walnut/Slate
- Odometer
- 100,918 miles
- Body/Seating
- Truck Crew Cab/5 seats
- Fuel Economy
- 22/26 MPG City/Hwy
- Transmission
- a
- Drivetrain
- 4x4
- Engine
- I-6 cyl
- VIN
- 3GTU9DET2MG327809
- Stock Number
- 21633A
GMC
Sierra 1500
Highlighted Features
- Navigation system
- Lane departure
- Leather upholstery
- Automatic temperature control
- Power moonroof
- Premium audio system
- Wireless phone connectivity
- Parking sensors
- Front dual zone A/C
- Auto high-beam headlights
- Auto-dimming rearview mirror
- Split folding rear seat
Included Packages & Accessories
- 3.23 Rear Axle Ratio
- Front License Plate Kit
- Power Sunroof
- Federal Emissions Requirements
- HD Radio
- Trailer Tire Pressure Monitor System
- Automatic Stop/Start
- Wheels: 20" x 9" Polished Aluminum
- Hitch Guidance
- Electric Rear-Window Defogger
- Heavy-Duty Air Filter
- Skid Plates
- Wireless Charging
- Color-Keyed Carpeting Floor Covering
- Transmission: 10-Speed Automatic
- Lane Keep Assist w/Lane Departure Warning
- Premium Bose 7-Speaker Sound System
- Automatic Emergency Braking
- Integrated Trailer Brake Controller
- Manual Tilt-Wheel & Telescoping Steering Column
- Tires: 275/60R20SL AT BW
- 255/80R17SL AS BW Spare Tire
- Remote Vehicle Starter System
- 220 Amp Alternator
- GVWR: 7,200 lbs
- In-Vehicle Trailering App
- Floor-Mounted Center Console
- IntelliBeam Automatic High Beam On/Off
- Steering Wheel Audio Controls
- Driver Alert Package I
- Ultrasonic Front & Rear Park Assist
- Lane Change Alert w/Side Blind Zone Alert
- Rear Cross Traffic Alert
- Perimeter Lighting
- Deep-Tinted Glass
- 10-Way Power Driver Seat Adjuster w/Lumbar
- Spray-On Pickup Bed Liner w/GMC Logo
- Hitch Guidance w/Hitch View
- Rear Dual USB Charging-Only Ports
- Keyless Open & Start
- Front Pedestrian Braking
- 4G LTE Wi-Fi Hotspot Capable
- 12-Volt Rear Auxiliary Power Outlet
- 2 USB Ports
- Auto-Locking Rear Differential
- Power Door Locks
- Chrome Wheel To Wheel Assist Steps
- Preferred Equipment Group 4SA
- Radio: Premium GMC Infotainment Sys w/Multi-Touch
- 6-Speaker Audio System Feature
- SiriusXM w/360L
- Compass
- OnStar & GMC Connected Services Capable
- GMC Connected Access Capable
- 120-Volt Instrument Panel Power Outlet
- 120-Volt Bed Mounted Power Outlet
- Front 40/20/40 Split-Bench Seat
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- Driver Memory
- Heated Driver & Front Outboard Passenger Seating
- Electrical Lock Control Steering Column
- Theft Deterrent System
- Power Front Windows w/Driver Express Up/Down
- Power Front Passenger Windows w/Express Up/Down
- Power Rear Windows w/Express Down
- Chrome Grille
- LED Cargo Area Lighting
- Front Frame-Mounted Black Recovery Hooks
- Tires: 265/65R18SL AS BW
- Wheels: 18" x 8.5" 6-Spoke Machined Aluminum
- Rear Wheelhouse Liners
- Trailering Package
- ProGrade Trailering System
- 170 Amp Alternator
- Auxiliary External Transmission Oil Cooler
- Single Speed Transfer Case
- Power Sliding Rear Window w/Rear Defogger
- Safety Alert Seat
- Engine Block Heater
- Front Bucket Seats
- Heated 2nd Row Outboard Seats
- X31 Off-Road & Protection Package
- All-Weather Floor Liner
- Following Distance Indicator
- Ventilated Driver & Front Passenger Seats
- X31 Off-Road Package
- Off-Road Suspension
- Hill Descent Control
- X31 Hard Badge
- 2-Speed Transfer Case
- Tires: 265/65R18SL AT BW
- Dual Exhaust w/Premium Tips
- Forward Collision Alert
- SLT Convenience Package
- Universal Home Remote
- Engine: Duramax 3.0L Turbo-Diesel I6
- 850 Heavy-Duty Battery
- Delete External Engine Oil Cooler
- Driver Alert Package II
- Adaptive Cruise Control
- SLT Premium Plus Package
- SLT Preferred Package
- Radio: Premium GMC Infotainment Sys w/Navigation
Included Packages & Options
- SLT Premium Plus Package$7,145
- SLT Convenience Package
- SLT Preferred Package
- Driver Alert Package I
- Driver Alert Package II
- Wheels: 20" x 9" Polished Aluminum
- Chrome Wheel To Wheel Assist Steps
- Spray-On Pickup Bed Liner w/GMC Logo
- Transmission: 10-Speed Automatic
- X31 Off-Road & Protection Package$3,005
- Spray-On Pickup Bed Liner w/GMC Logo
- All-Weather Floor Liner
- Wheels: 20" x 9" Polished Aluminum
- SLT Convenience Package$1,445
- Front Bucket Seats
- Floor-Mounted Center Console
- Ventilated Driver & Front Passenger Seats
- Power Sliding Rear Window w/Rear Defogger
- Universal Home Remote
- Heated 2nd Row Outboard Seats
- 2 USB Ports
- Driver Alert Package II$1,095
- Forward Collision Alert
- Lane Keep Assist w/Lane Departure Warning
- Automatic Emergency Braking
- Front Pedestrian Braking
- IntelliBeam Automatic High Beam On/Off
- Adaptive Cruise Control
- Following Distance Indicator
- Safety Alert Seat
- SLT Preferred Package$1,070
- Radio: Premium GMC Infotainment Sys w/Navigation
- Premium Bose 7-Speaker Sound System
- Wireless Charging
- Engine: Duramax 3.0L Turbo-Diesel I6$995
- 220 Amp Alternator
- Engine Block Heater
- 850 Heavy-Duty Battery
- Delete External Engine Oil Cooler
- GVWR: 7,200 lbs
- Transmission: 10-Speed Automatic
- Driver Alert Package I$890
- Ultrasonic Front & Rear Park Assist
- Lane Change Alert w/Side Blind Zone Alert
- Rear Cross Traffic Alert
- Perimeter Lighting
- X31 Off-Road Package$850
- Off-Road Suspension
- Hill Descent Control
- Skid Plates
- Heavy-Duty Air Filter
- X31 Hard Badge
- 2-Speed Transfer Case
- Tires: 265/65R18SL AT BW
- Dual Exhaust w/Premium Tips
- Tires: 275/60R20SL AT BW$200
- 255/80R17SL AS BW Spare Tire
Included Options
- Power Sunroof$995
- Trailer Tire Pressure Monitor System$50
Detailed Specifications
- 1-touch down
- 1-touch up
- Adaptive Cruise Control
- 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
- Moonroof sunshade: manual
- 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
- Telescoping steering wheel
- Tilt steering wheel
- Alloy wheels
- Front anti-roll bar
- Front tires: 275/60SR20.0
- Front wheel independent suspension
- Power steering
- Rear tires: 275/60SR20.0
- 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"
- Radio data system
- Smart device integration: Android Auto/Apple CarPlay
- Speaker type: Bose
- Speakers: 7
- 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
- Block heater
- Compressor: intercooled turbo
- Cylinder configuration: I-6
- Drive type: four-wheel
- Engine liters: 3.0L
- Engine location: front
- Fuel economy city: 22mpg
- Fuel economy combined: 16mpg
- Fuel economy highway: 26mpg
- Fuel tank capacity: 24.0gal.
- Horsepower: 277hp @ 3,750RPM
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Number of valves: 24
- Rear locking differential
- Standard fuel economy fuel type: gasoline
- Transmission: 10 speed automatic
- Variable intake manifold
- Variable valve control
- Ground clearance (min): 205mm (8.1")
- Auto-dimming door mirrors
- Bedliner
- 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
- Skid plates
- Trailer hitch receiver
- Trailer sway control
- Compression ratio: 15.00 to 1
- Engine bore x stroke: 84.0mm x 90.0mm (3.31" x 3.54")
- Engine horsepower: 277hp @ 3,750RPM
- 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")
- GVWR: 3,266kg (7,200lbs)
- 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")
- Towing capacity: 3,856kg (8,500lbs)
- Wheelbase: 3,744mm (147.4")
- Appearance: analog
- Auto high-beam headlights
- Blind spot: Lane Change Alert with Side Blind Zone Alert warning
- Compass
- Delay-off headlights
- Front fog lights
- Front reading lights
- Fully automatic headlights
- Lane departure: Lane Keep Assist with Lane Departure Warning active
- 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
- Front pedestrian detection: prevention
- 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
- SLT Convenience Package
- SLT Preferred Package
- Driver Alert Package I
- Driver Alert Package II
- Wheels: 20" x 9" Polished Aluminum
- Chrome Wheel To Wheel Assist Steps
- Spray-On Pickup Bed Liner w/GMC Logo
- Transmission: 10-Speed Automatic
- Spray-On Pickup Bed Liner w/GMC Logo
- All-Weather Floor Liner
- Wheels: 20" x 9" Polished Aluminum
- Front Bucket Seats
- Floor-Mounted Center Console
- Ventilated Driver & Front Passenger Seats
- Power Sliding Rear Window w/Rear Defogger
- Universal Home Remote
- Heated 2nd Row Outboard Seats
- 2 USB Ports
- Forward Collision Alert
- Lane Keep Assist w/Lane Departure Warning
- Automatic Emergency Braking
- Front Pedestrian Braking
- IntelliBeam Automatic High Beam On/Off
- Adaptive Cruise Control
- Following Distance Indicator
- Safety Alert Seat
- Radio: Premium GMC Infotainment Sys w/Navigation
- Premium Bose 7-Speaker Sound System
- Wireless Charging
- 220 Amp Alternator
- Engine Block Heater
- 850 Heavy-Duty Battery
- Delete External Engine Oil Cooler
- GVWR: 7,200 lbs
- Transmission: 10-Speed Automatic
- Ultrasonic Front & Rear Park Assist
- Lane Change Alert w/Side Blind Zone Alert
- Rear Cross Traffic Alert
- Perimeter Lighting
- Off-Road Suspension
- Hill Descent Control
- Skid Plates
- Heavy-Duty Air Filter
- X31 Hard Badge
- 2-Speed Transfer Case
- Tires: 265/65R18SL AT BW
- Dual Exhaust w/Premium Tips
- 255/80R17SL AS BW Spare Tire
- SiriusXM w/360L
- 120-Volt Bed Mounted Power Outlet
- 6-Speaker Audio System Feature
- SiriusXM w/360L
- 10-Way Power Driver Seat Adjuster w/Lumbar
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- Driver Memory
- Radio: Premium GMC Infotainment Sys w/Multi-Touch
- Compass
- Electric Rear-Window Defogger
- Power Door Locks
- Remote Vehicle Starter System
- Keyless Open & Start
- Color-Keyed Carpeting Floor Covering
- 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
- Rear Dual USB Charging-Only Ports
- Front 40/20/40 Split-Bench Seat
- Heated Driver & Front Outboard Passenger Seating
- Steering Wheel Audio Controls
- Manual Tilt-Wheel & Telescoping Steering Column
- Electrical Lock Control Steering Column
- Theft Deterrent System
- Power Front Windows w/Driver Express Up/Down
- Power Front Passenger Windows w/Express Up/Down
- Power Rear Windows w/Express Down
- Deep-Tinted Glass
- Chrome Grille
- LED Cargo Area Lighting
- Front Frame-Mounted Black Recovery Hooks
- Tires: 265/65R18SL AS BW
- Wheels: 18" x 8.5" 6-Spoke Machined Aluminum
- Rear Wheelhouse Liners
- Trailering Package
- ProGrade Trailering System
- 170 Amp Alternator
- Auxiliary External Transmission Oil Cooler
- Auto-Locking Rear Differential
- Integrated Trailer Brake Controller
- Single Speed Transfer Case
- Hitch Guidance
- Hitch Guidance w/Hitch View
- In-Vehicle Trailering App
Dealer Notes
Equipment An off-road package is equipped on it. The GMC Sierra features a high end BOSE stereo system. The steering wheel audio controls on the GMC Sierra keep the volume and station within easy reach. Bluetooth technology is built into this 2021 GMC Sierra 1500, keeping your hands on the steering wheel and your focus on the road. The state of the art park assist system will guide you easily into any spot. You'll never again be lost in a crowded city or a country region with the navigation system on this GMC Sierra. Protect it from unwanted accidents with a cutting edge backup camera system. Keep your hands warm all winter with a heated steering wheel in this GMC Sierra . Set the temperature exactly where you are most comfortable in this unit. The fan speed and temperature will automatically adjust to maintain your preferred zone climate. This GMC Sierra is outfitted with an OnStar communication system. Packages SLT Premium Plus Package: 20' X 9' Polished Aluminum Wheels; Chrome Wheel to Wheel Assist Steps; Spray-On Pickup Bed Liner with GMC Logo. 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. Driver Alert Package II: Forward Collision Alert; Lane Keep Assist with Lane Departure Warning; Front Pedestrian Braking; Following Distance Indicator; Automatic Emergency Braking; Safety Alert Seat; IntelliBeam Automatic High Beam On/off; Adaptive Cruise Control. Driver Alert Package I: Ultrasonic Front and Rear Park Assist; Rear Cross Traffic Alert; Perimeter Lighting; Lane Change Alert with Side Blind Zone Alert. SLT Preferred Package: Premium Bose 7-Speaker Sound System; Wireless Charging; Premium GMC Infotainment System Radio with Navigation. X31 Off-Road and Protection Package: 20' X 9' Polished Aluminum Wheels; 275/60R20SL AT BW Tires; Spray-On Pickup Bed Liner with GMC Logo; All-Weather Floor Liner. X31 Off-Road Package: Hill Descent Control; Off-Road Suspension; Skid Plates; Heavy-Duty Air Filter; X31 Hard Badge. 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; 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. Power Sunroof. Chrome Wheel to Wheel Assist Steps. Spray-On Pickup Bed Liner with GMC Logo. All-Weather Floor Liner. 275/60R20SL AT BW Tires. Trailer Tire Pressure Mo.
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
- Baldwin Price
- $35,675
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