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Used
2021 GMC Sierra 1500 trucks
for sale
near
Dacula, GA
- 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
My service advisor is Christefer G.
My service advisor is Christefer G. & I wanted to take the time to say how grateful I am for him. I have a fantastic experience working with him. incredibly helpful, always keeping me informed throughout the entire process. Communication is clear, prompt, and consistent—something that makes the entire experience smooth and stress-free. I truly appreciated their professionalism, attention to detail, and willingness to go the extra mile to ensure everything is always handled efficiently. Highly recommend!
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
Vehicle information
Features
Reviews
2nd vehicle bought from them.
2nd vehicle bought from them. Highly recommend. Best sales experience I've ever had. Highly recommend.
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...






Used
2021 GMC Sierra 1500
Vehicle information
Features
Reviews
Nicest, best performing truck I've ever owned
My truck has a great appearance, inside and out. It is a pleasure to drive; and rides and performs great. It is the best truck I've ever owned.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Very patient, nice and professional, definitely recommend
Very patient, nice and professional, definitely recommend buying a truck from this guy ! Ben Clark
2021 GMC Sierra Denali
This is the nicest truck I have ever owned. Lots of features. Takes a while to learn what all it does but a really enjoyable vehicle.






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Benjamin was a great sales person.
Benjamin was a great sales person. He found the vehicle I was happy with. Amazing Experience!!
Great Buy!
This truck is amazing. Turning heads all over as we tour the area. Those riding with is also enjoy the comforts and safety features. Great Buy!






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Monte Williams is ALWAYS very professional and helpful
Monte Williams is ALWAYS very professional and helpful during my visits. 5 stars ✨✨✨✨✨and give the man a raise xxxx it ! He keeps me coming back for ALL my service needs from the rooter to the tooter ! He’s also good with communicating with what’s going on with my vehicle . I appreciate you Montae ! Great teamwork buddy !






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Its not easy buying a car these days…especially for a
Its not easy buying a car these days…especially for a woman! Michael Tate sold me a car and really he did all the work!!! I signed a few papers and was driving away in my new ride. Professional and knowledgeable!! See Michael Tate for a great painless experience 😊






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Very good service from Cato, he was amazing and I am so
Very good service from Cato, he was amazing and I am so satisfied.He help me get exactly what I was looking for in a car.






Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Very nice and knowledgeable one of the best experience
Very nice and knowledgeable one of the best experience I’ve ever had at a dealership, hands-down






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
In-and-out, fast service & NO stress... THANK YOU!
I went to Carmax on 4th of July. The place was not super packed, so that was great. We had a little 9th month old on tow, and were nervous that it would take us all day to shop. The only thing that took a lot of time was waiting for a sales man. Apparently, the new young guys at the front were more interested in flirting (yes flirting) with each other and playing around than realizing that we needed help or just plainly asking us if we were being helped. That really bothered me, as we wasted 30 mins just sitting dumb. The front desk girl was no help.. she was the one to tell us to sit and wait and then no where to be seen. Finally someone professional and extremely courteous walked by ... the service manager. He quickly apologized for our wait, and brought along Daniel Claudio. I am SOOOOOOOOOOOooooO thankful he did. Danny was professional, kind, humble, hard-working, and just all the way a pleasure to work with. He represented Carmax the way it should be. He took the details of what we were looking for and walked us around to cars that would fit our needs. The second car (nissan pathfinder) was a recommendation from him... and that was the car we bought. Danny if you're reading this... THANK YOU! You're such a great employee and that deserves recognition.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Great customer service
Bought a nice used mini cooper from Hennessy..seems to be a great little car...my salesman Brian did a great job and the paperwork process was quick and efficient.






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Great experience at USED CAR DEALERSHIP
I had a great experience with them. They are straight forward people. I was in and out in 2hrs with my new ride. I don't know about other people reviews why they left bad review maybe expecting way too much. But I will definitely recommend them to my friends and family.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Rick Hendrick GMC is good .
Rick Hendrick GMC is good . I need 25 words. Good, good, good, good, good, good, good, good, good, good, good, good., good, good, good, good.

Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great and easy experience.
Great and easy experience. Sales staff was easy to work with. Car is fantastic. Price was reasonable. I would recommend the dealership to a friend.
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Extremely satisfied with my new car!
Extremely satisfied with my new car! Awesome experience with the entire purchase process. A+ to the salesman Mark for getting me the best deal. His patience and knowledge is to be commended. Thank you!






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Great experience 5 stars all around they have some of the
Great experience 5 stars all around they have some of the best prices in the market.
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GMC Sierra 1500 prices by year
Model year | Prices from | Deals |
---|---|---|
2025 GMC Sierra 1500 | $35,880 | 3 Good deals |
2024 GMC Sierra 1500 | $36,720 | 35 Good deals |
2023 GMC Sierra 1500 | $31,320 | 20 Good deals |
2022 GMC Sierra 1500 | $30,488 | 12 Good deals |
2020 GMC Sierra 1500 | $30,738 | 7 Good deals |
2019 GMC Sierra 1500 | $28,995 | 5 Good deals |
About the 2021 GMC Sierra 1500
Base shown (base trim).
- Seating
- 3
- Door count
- 2
- Drivetrain
- Rear-wheel drive
- Combined MPG
- 16
- Transmission
- 6-Speed A/T
- Engine
- 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability)

How much does the 2021 GMC Sierra 1500 cost?
The 2021 GMC Sierra 1500 price depends on several factors, including the trim level, optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Sierra 1500 is $39,374, with pricing starting at $15,991.
What is the MPG of the 2021 GMC Sierra 1500?
The 2021 GMC Sierra 1500 offers up to 14 MPG in city driving and 19 MPG on the highway for a combined rating of 16 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 trim, driving conditions, driving habits, vehicle maintenance, and other factors.
What are some similar vehicles and competitors of the 2021 GMC Sierra 1500?
The 2021 GMC Sierra 1500 compares to and/or competes against the following vehicles:
Is the 2021 GMC Sierra 1500 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.
Is the 2021 GMC Sierra 1500 a good truck?
Below are the Cars.com consumer ratings for the 2021 GMC Sierra 1500.
- Comfort 4.2
- Interior 4.2
- Performance 3.8
- Value 3.6
- Exterior 4.3
- Reliability 3.5
60% of drivers recommend this car
- Comfort 4.2
- Interior 4.2
- Performance 3.8
- Value 3.6
- Exterior 4.3
- Reliability 3.5
AT4 (2 styles)
Style | |
---|---|
4WD Crew Cab 157" AT4 | 4WD Crew Cab 147" AT4 |
Inventory price | |
Starting at $55,900 | Starting at $54,700 |
Combined MPG | |
16 | 17 |
Engine | |
420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) |
Base (7 styles)
Style | ||||||
---|---|---|---|---|---|---|
4WD Double Cab 147" | 2WD Double Cab 147" | 2WD Crew Cab 147" | 4WD Crew Cab 147" | 4WD Crew Cab 157" | 4WD Reg Cab 140" | 2WD Reg Cab 140" |
Inventory price | ||||||
Starting at $37,300 | Starting at $34,000 | Starting at $36,400 | Starting at $39,700 | Starting at $40,000 | Starting at $34,700 | Starting at $30,100 |
Combined MPG | ||||||
19 | 21 | 21 | 19 | 19 | 16 | 16 |
Engine | ||||||
310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) |
Denali (3 styles)
Style | ||
---|---|---|
2WD Crew Cab 147" Denali | 4WD Crew Cab 147" Denali | 4WD Crew Cab 157" Denali |
Inventory price | ||
Starting at $55,800 | Starting at $59,300 | Starting at $59,600 |
Combined MPG | ||
17 | 18 | 18 |
Engine | ||
355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) |
Elevation (7 styles)
Style | ||||||
---|---|---|---|---|---|---|
4WD Double Cab 147" Elevation w/3VL | 4WD Crew Cab 147" Elevation w/3VL | 4WD Crew Cab 157" Elevation | 2WD Double Cab 147" Elevation | 4WD Double Cab 147" Elevation w/3SB | 4WD Crew Cab 147" Elevation w/3SB | 2WD Crew Cab 147" Elevation |
Inventory price | ||||||
Starting at $44,600 | Starting at $47,200 | Starting at $49,300 | Starting at $43,100 | Starting at $46,400 | Starting at $49,000 | Starting at $45,700 |
Combined MPG | ||||||
19 | 19 | 19 | 21 | 19 | 19 | 21 |
Engine | ||||||
310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) |
SLE (5 styles)
Style | ||||
---|---|---|---|---|
4WD Crew Cab 147" SLE | 4WD Crew Cab 157" SLE | 2WD Double Cab 147" SLE | 2WD Crew Cab 147" SLE | 4WD Double Cab 147" SLE |
Inventory price | ||||
Starting at $47,100 | Starting at $47,400 | Starting at $41,400 | Starting at $43,800 | Starting at $44,700 |
Combined MPG | ||||
19 | 19 | 21 | 21 | 19 |
Engine | ||||
310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) |
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.
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Research the 2021 GMC Sierra 1500
Compare the 2021 GMC Sierra 1500
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5 Great Deals out of 33 listings starting at $24,999
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Used 2021 GMC Sierra 1500 by body style
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