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Used
2021 GMC Sierra 1500 SLT trucks
for sale
near me
2 matches
30 miles from 20149
Be the first to know!
Est.
$400
/mo*
- Down Payment
- $0
- Net trade-in value
- $0
- Months
- 72
- APR
- 7.0%
- Sales tax
- 0.0%
*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.
**Your Saved Vehicles list will be shared along with your contact information when you submit a vehicle request to a dealership. To opt out of this sharing, please view your options on Cars.com Privacy Notice.
Used
2021 GMC Sierra 1500 SLT
76,623 mi.
$37,877
Fitzgerald Rockville GMC
Vehicle information
Ext. color: Satin Steel Metallic
Int. color: Jet Black
Drivetrain: Four-wheel Drive
MPG:
22-26
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 3L I-6 diesel direct injection, DOHC, variable valve con
Stock #: G354271A
VIN: 3GTU9DET7MG291860
Features
Convenience:
Adaptive Cruise Control, Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment:
Android Auto®, Apple CarPlay®, Bluetooth®, Premium Sound System, USB Port, WiFi Hotspot
Exterior:
Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety:
Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, LED Headlights, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating:
Leather Seats, Memory Seat
Reviews
Fitzgerald Rockville GMC review
Car buying
Jason at Fitzgerald Buick is always so helpful to us. They are always upfront with us and work hard to help us get the best deal. We will continue to go back anytime we need another vehicle and will definitely refer friends and family to them.
2021 GMC Sierra 1500 SLT review
This truck has a jerk when changing gears sometimes.
This truck has a jerk when changing gears sometimes. I enjoy the truck overall easy to handle and comfortable. Drive with ease sight is good when driving.
Used
2021 GMC Sierra 1500 SLT
134,111 mi.
$29,981
Joyce Koons Honda Buick GMC
Vehicle information
Ext. color: Pacific Blue Metallic
Int. color: Jet Black
Drivetrain: Four-wheel Drive
MPG:
14-20
Fuel type: Gasoline
Transmission: 8-Speed Automatic
Engine: 5.3L V8 16V GDI OHV
Stock #: G260544A
VIN: 1GTU9DED9MZ269206
Features
Convenience:
Adaptive Cruise Control, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment:
Apple CarPlay®, Bluetooth®, Premium Sound System, Satellite Radio, USB Port
Exterior:
Alloy Wheels, Tow Hitch, Tow Hooks
Safety:
Automatic Emergency Braking, Backup Camera, Brake Assist, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating:
Leather Seats, Memory Seat
Reviews
Joyce Koons Honda Buick GMC review
The planning ahead and the attention to detail in the
The planning ahead and the attention to detail in the early stages of this purchase made the final paperwork and completing the purchase easy and quick. I drove from Greensboro NC, 4.5 hours away to purchase the truck. The truck and all the details were ready, I was promptly taken care of and out the door in about an hour. Had to be the easiest and fastest vehicle purchases I have ever done. Completely satisfied, and happy I chose to do business at Joyce Koons GMC. Hats off to all the team that helped make this happen.
2021 GMC Sierra 1500 SLT review
Brake Pad Monitor
2021 GMC sierra 1500, 5.3, crew cab 4x4, 21000 miles. brakepad monitor lites up. dealership says needs brakes and rotors in back. one mo. on warranty. our rural roads dirty up the monitor. Needs new monitor. brakes look great to me. No noises. dealer says parts on order GM strike. Can't replace myself cause of computer...
There are 6 matching cars close to your year range.
GMC Certified
2020 GMC Sierra 1500 SLT
31,458 mi.
$41,000
$500 price drop
Sport Chevrolet Cadillac
Vehicle information
Ext. color: Onyx Black
Int. color: Jet Black
Drivetrain: Four-wheel Drive
MPG:
15-20
Fuel type: Gasoline
Transmission: Automatic
Engine: EcoTec3 6.2L V-8 gasoline direct injection, variable valve contr
Stock #: A10731
VIN: 3GTU9DEL4LG429420
Features
Convenience:
Adaptive Cruise Control, Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Power Folding Mirrors, Remote Start
Entertainment:
Android Auto®, Apple CarPlay®, Bluetooth®, Premium Sound System, Satellite Radio, USB Port, WiFi Hotspot
Exterior:
Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety:
Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, LED Headlights, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating:
Leather Seats, Memory Seat
Used
2023 GMC Sierra 1500 SLT
42,661 mi.
$42,391
Lindsay Volkswagen of Manassas
Vehicle information
Ext. color: Titanium Rush Metallic
Int. color: Jet Black
Drivetrain: Four-wheel Drive
MPG:
16-20
Fuel type: Gasoline
Transmission: 10-Speed Automatic
Engine: EcoTec3 5.3L V-8 gasoline direct injection, variable valve contr
Stock #: VP14321A
VIN: 3GTUUDED2PG149086
Features
Convenience:
Adaptive Cruise Control, Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment:
Android Auto®, Apple CarPlay®, Bluetooth®, Premium Sound System, USB Port, WiFi Hotspot
Exterior:
Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety:
Automatic Emergency Braking, Backup Camera, Brake Assist, LED Headlights, Lane Departure Warning, Rain Sensing Wipers, Stability Control
Seating:
Leather Seats, Memory Seat
Used
2022 GMC Sierra 1500 SLT
23,251 mi.
$43,900
George
Private seller
Vehicle information
Ext. color: Black
Int. color: Black
Drivetrain: Four-wheel Drive
MPG:
15-18
Fuel type: E85 Flex Fuel
Transmission: A/T
Engine: 355.0HP 5.3L 8 Cylinder Engine Flex Fuel Capability
VIN: 3GTUUDED6NG655100
Features
Convenience:
Adaptive Cruise Control, Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Power Folding Mirrors, Power Liftgate, Remote Start
Entertainment:
Android Auto®, Apple CarPlay®, Bluetooth®, Premium Sound System, USB Port, WiFi Hotspot
Exterior:
Alloy Wheels, Roof Rack, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety:
Automatic Emergency Braking, Backup Camera, Brake Assist, Stability Control
Seating:
Leather Seats, Memory Seat
Certified
2022 GMC Sierra 1500 SLT
26,282 mi.
$45,500
$1,500 price drop
Ted Britt Ford Lincoln of Chantilly
Vehicle information
Ext. color: Summit White
Int. color: Jet Black
Drivetrain: Four-wheel Drive
MPG:
14-19
Fuel type: Gasoline
Transmission: 10-Speed Automatic
Engine: 5.3L V8 16V GDI OHV
Stock #: P46918
VIN: 3GTUUDED7NG641626
Features
Convenience:
Adaptive Cruise Control, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment:
Apple CarPlay®, Bluetooth®, Premium Sound System, Satellite Radio, USB Port
Exterior:
Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety:
Automatic Emergency Braking, Backup Camera, Brake Assist, Lane Departure Warning, Rain Sensing Wipers, Stability Control
Seating:
Leather Seats, Memory Seat
Used
2023 GMC Sierra 1500 SLT
35,712 mi.
$45,000
$500 price drop
Koons Tysons Chrysler Dodge Jeep RAM
Vehicle information
Ext. color: Sterling Metallic
Int. color: Jet Black
Drivetrain: Four-wheel Drive
MPG:
15-19
Fuel type: Gasoline
Transmission: Automatic
Engine: EcoTec3 6.2L V-8 gasoline direct injection, variable valve contr
Stock #: 253118A
VIN: 1GTUUDEL8PZ141680
Features
Convenience:
Adaptive Cruise Control, Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Power Folding Mirrors, Remote Start
Entertainment:
Android Auto®, Apple CarPlay®, Bluetooth®, Premium Sound System, Satellite Radio, USB Port, WiFi Hotspot
Exterior:
Alloy Wheels, Tow Hitch, Tow Hooks
Safety:
Automatic Emergency Braking, Backup Camera, Brake Assist, LED Headlights, Lane Departure Warning, Rain Sensing Wipers, Stability Control
Seating:
Leather Seats, Memory Seat
Vehicle information
Ext. color: Summit White
Int. color: Dark Walnut/Slate
Drivetrain: Four-wheel Drive
MPG:
15-19
Fuel type: Gasoline
Transmission: Automatic
Engine: EcoTec3 6.2L V-8 gasoline direct injection, variable valve contr
Stock #: P9301
VIN: 3GTUUDEL6PG293831
Features
Convenience:
Adaptive Cruise Control, Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment:
Android Auto®, Apple CarPlay®, Bluetooth®, USB Port, WiFi Hotspot
Exterior:
Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety:
Automatic Emergency Braking, Backup Camera, Brake Assist, LED Headlights, Lane Departure Warning, Stability Control
Seating:
Leather Seats, Memory Seat
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GMC Sierra 1500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 1500 SLT | 7 Good deals | |
| 2025 GMC Sierra 1500 SLT | 277 Great deals | |
| 2024 GMC Sierra 1500 SLT | $45,235 | 192 Great deals |
| 2023 GMC Sierra 1500 SLT | $45,965 | 146 Great deals |
| 2022 GMC Sierra 1500 SLT | $42,031 | 64 Great deals |
| 2020 GMC Sierra 1500 SLT | $34,560 | 99 Great deals |
| 2019 GMC Sierra 1500 SLT | $32,960 | 39 Great deals |
| 2018 GMC Sierra 1500 SLT | $27,406 | 161 Great deals |
| 2017 GMC Sierra 1500 SLT | $25,673 | 73 Great deals |
About the 2021 GMC Sierra 1500 SLT
SLT shown.
- Seating
- 5
- Door count
- 4
- Drivetrain
- Rear Wheel Drive
- Combined MPG
- 17
- Transmission
- 10-Speed A/T
- Engine
- 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel)
How much does the 2021 GMC Sierra 1500 SLT cost?
The 2021 GMC Sierra 1500 SLT price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Sierra 1500 SLT is $35,912, with pricing starting at $21,999.
What is the MPG of the 2021 GMC Sierra 1500 SLT?
The 2021 GMC Sierra 1500 SLT offers up to 15 MPG in city driving and 22 MPG on the highway for a combined rating of 17 MPG.
These figures are based on EPA mileage ratings and are for comparison purposes only. The actual mileage will vary depending on the selected vehicle options, driving conditions, driving habits, vehicle maintenance, and other factors.
What are some similar vehicles and competitors of the 2021 GMC Sierra 1500 SLT?
The 2021 GMC Sierra 1500 SLT compares to and/or competes against the following vehicles:
Is the 2021 GMC Sierra 1500 SLT reliable?
The 2021 GMC Sierra 1500 has an average reliability rating of 3.5 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2021 Sierra 1500 owners.
60% of drivers recommend this car
Rating breakdown (out of 5):
- Comfort 4.2
- Interior 4.2
- Performance 3.8
- Value 3.6
- Exterior 4.3
- Reliability 3.5
SLT (3 styles)
| Style | ||
|---|---|---|
| 4WD Crew Cab 147" SLT | 2WD Crew Cab 147" SLT | 4WD Crew Cab 157" SLT |
| Inventory price | ||
| Starting at $50,800 | Starting at $47,500 | Starting at $51,100 |
| Combined MPG | ||
| 18 | 17 | 18 |
| Engine | ||
| 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) |
*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.
**Your Saved Vehicles list will be shared along with your contact information when you submit a vehicle request to a dealership. To opt out of this sharing, please view your options on Cars.com Privacy Notice.
GMC Sierra 1500 trims
-
GMC Sierra 1500 2021 AT4
150 Great Deals out of 593 listings starting at $26,500
-
GMC Sierra 1500 2021 Elevation
111 Great Deals out of 489 listings starting at $20,500
-
GMC Sierra 1500 2021 Denali
137 Great Deals out of 460 listings starting at $24,000
-
GMC Sierra 1500 2021 SLE
30 Great Deals out of 119 listings starting at $21,499
-
GMC Sierra 1500 2021 Base
11 Great Deals out of 43 listings starting at $16,700
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This vehicle is currently in high demand given its competitive price, desirable features, and overall condition, and may have a higher chance of selling quickly.