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*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.
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Used
2021 GMC Sierra 1500 SLT trucks
for sale
near me
- 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
Vehicle information
Features
Reviews
I will never buy a car anywhere else.
I will never buy a car anywhere else. Everyone was extremely friendly and helpful and my salesperson was top notch.
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.
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GMC Sierra 1500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 1500 SLT | 7 Great deals | |
| 2025 GMC Sierra 1500 SLT | 301 Great deals | |
| 2024 GMC Sierra 1500 SLT | $44,595 | 220 Great deals |
| 2023 GMC Sierra 1500 SLT | $45,646 | 161 Great deals |
| 2022 GMC Sierra 1500 SLT | $41,649 | 91 Great deals |
| 2020 GMC Sierra 1500 SLT | $34,139 | 115 Great deals |
| 2019 GMC Sierra 1500 SLT | $32,661 | 53 Great deals |
| 2018 GMC Sierra 1500 SLT | $27,356 | 140 Great deals |
| 2017 GMC Sierra 1500 SLT | $25,392 | 69 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 $35,715, with pricing starting at $14,980.
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
- 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.
2021 GMC Sierra 1500 SLT by popular city
-
2021 GMC Sierra 1500 SLT in Dallas, TX
7 Great Deals out of 20 listings starting at $24,500
GMC Sierra 1500 trims
-
GMC Sierra 1500 2021 AT4
172 Great Deals out of 587 listings starting at $24,900
-
GMC Sierra 1500 2021 Elevation
135 Great Deals out of 502 listings starting at $21,875
-
GMC Sierra 1500 2021 Denali
141 Great Deals out of 456 listings starting at $24,199
-
GMC Sierra 1500 2021 SLE
39 Great Deals out of 120 listings starting at $20,199
-
GMC Sierra 1500 2021 Base
12 Great Deals out of 40 listings starting at $16,500
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This vehicle is certified pre-owned, backed by a manufacturer warranty, and typically undergoes a rigorous multi-point inspection to ensure quality and reliability.
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.
