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Used
2021 GMC Sierra 1500 trucks
for sale
near
Downers Grove, IL
- 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






Used
2021 GMC Sierra 1500 Elevation






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
5 stars for Bill Jacob's!
5 stars for Bill Jacob's! He was very friendly, courteous, and helpful with the service of my Land Rover. I definitely recommend Jacob's Land Rover dealership!
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.






GMC Certified
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
I worked with Sabrina S.
I worked with Sabrina S. She made the entire process seamless and comfortable. I never felt pressured or haggled at any point. Thank you to Woody, and thank you, Sabrina.
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 AT4
Vehicle information
Features
Reviews
Couldn’t have asked for a better experience!
Couldn’t have asked for a better experience! Sergio Ramirez, our salesman, was great. Between Sergio and Pete, the financial representative, they spent several hours going over the car functions (we bought an EV) and how EVs drive versus gas cars. Sergio was wonderful, can’t praise him enough. Thank you Currie Motors and Sergio for making our first new car purchase painless and even fun!
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 Elevation
Vehicle information
Features
Reviews
“Excellent Communication
My first experience at this dealership will definitely bring me back. We are so happy with our purchased! We had Alex Alverio from Sales, he was very professional & helpful, has awesome customer service & we highly recommend Alex. Thank you so much and keep it up!






Certified
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Brian did a fantastic job throughout the entire process.
Brian did a fantastic job throughout the entire process. He was very knowledgeable about all the different features the vehicle and took the time to make sure we knew how to use them. Lisa in the finance department really knows her job and works with you every step of the process to get you in and out as quickly as possible.






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
The dealership had a great selection of quality used
The dealership had a great selection of quality used cars, all well-maintained and reasonably priced. I appreciated their transparency and honesty throughout the process, including providing detailed vehicle history reports. The financing process was also seamless, offering several options and explaining everything clearly. I left feeling confident and satisfied with my purchase. Overall, I highly recommend Affinity Auto Sales to anyone looking for a reliable used car and a pleasant buying experience. Thank you to the entire team for making this such a positive experience!






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Jon David is an asset to your company he’s a gentleman
Jon David is an asset to your company he’s a gentleman and a scholar. He put a deal that I won’t forget, and I won’t forget him. My son was very happy and he treated him with courtesy.






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
We bought a used Hyundai couple of weeks ago.
We bought a used Hyundai couple of weeks ago. I think we got a good deal. The dealership was a good experience, specially compared to the other places we had been to. The sales person Christian Gonzales was extremely friendly, helpful and cooperative. His manager Renato Garcia was also a nice person to work with.






Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Very friendly and efficient place.
Very friendly and efficient place. They made a stressful process so easy. I am happy that I decided to go with Chicago Motor Credit.






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
My recent purchase from B & M is probably the best
My recent purchase from B & M is probably the best dealership experience I’ve ever had! Dominic and Chuck were friendly, extremely knowledgeable and helpful… B&M has a great selection of vehicles, a great service team, a wonderful sales team and the showroom has some CLASSIC cars that you can view as you wait! 10/10 recommendation!






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Exactly what I was looking for. Lots of trucks
After extensive searching I found a truck at summit auto center that matched my needs. After deciding to buy the truck, the whole process was actually easier than some local deals I have made. The condition of the truck is outstanding! At 6 years old it is in a condition that one would expect of a 1 to 2 year old unit. I am very pleased with the deal. A search for any trucks I may need in the future will start at Summit Auto Center






Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Great place to buy a vehicle.
Great place to buy a vehicle. The staff is very friendly and the process was very easy






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Service rep was ?
Service rep was ?on the ball? Understood my request and my lack of correct nomenclature






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Just had my 2024 Jeep Grand Cherokee serviced at
Just had my 2024 Jeep Grand Cherokee serviced at Castlevand Kim was my service consultant. She was vey helpful, service completed when promised and she covered the services and that my car was washed and ready!






GMC Certified
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Haggerty is great place to buy & service your car
From originally purchasing my car at Haggerty to having my car serviced at Haggerty, my experiences have all been positive. Everyone is friendly and answers all of my questions. Work is done well and on time.






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
I worked with Rocky and had an amazing experience.
I worked with Rocky and had an amazing experience. This was my first car purchase from a dealership of any sort so I was very nervous, but he was incredibly kind and helpful and explained everything I had questions on. He was very thorough and I felt super satisfied when I walked off the lot with my car. Cannot thank him enough! Same with Matt the financial adviser there, he was also incredibly thorough and kind and explained anything I had questions on! I highly recommend this dealership and these guys! They were amazing! :D






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Battery
Todd was very helpful and made sure my car was pulled inside when leaving as it was very slippery outside






Vehicle information
Features
Reviews
I had a great experience.
I had a great experience. I purchased a car at my second visit. On my first visit Luke the manager was very kind. We decided to return because our impression of Luke. Herman was the sales representative. He was very knowledgeable.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
We've worked with Tony before & he is very
We've worked with Tony before & he is very knowledgeable & knows just what we like.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I had an amazing experience working with my salesman
I had an amazing experience working with my salesman Antoni. He guided me and my family to the best car that suited us. He makes the car buying process super easy and smooth. The car was also a very good price too!
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GMC Sierra 1500 prices by year
Model year | Prices from | Deals |
---|---|---|
2026 GMC Sierra 1500 | $44,126 | |
2025 GMC Sierra 1500 | $35,495 | 2 Good deals |
2024 GMC Sierra 1500 | $34,695 | 5 Great deals |
2023 GMC Sierra 1500 | $32,295 | 29 Good deals |
2022 GMC Sierra 1500 | $32,991 | 28 Good deals |
2020 GMC Sierra 1500 | $29,500 | 11 Good deals |
2019 GMC Sierra 1500 | $18,499 | 5 Good deals |
2018 GMC Sierra 1500 | $16,949 | 9 Good deals |
2017 GMC Sierra 1500 | $7,988 | 5 Great 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 $38,703, with pricing starting at $15,480.
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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2021 GMC Sierra 1500 by city
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2021 GMC Sierra 1500 in Downers Grove, IL
4 Great Deals out of 34 listings starting at $18,950
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7 Great Deals out of 41 listings starting at $18,950
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4 Great Deals out of 34 listings starting at $18,950
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2021 GMC Sierra 1500 in Woodridge, IL
4 Great Deals out of 34 listings starting at $18,950
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2021 GMC Sierra 1500 in Willowbrook, IL
7 Great Deals out of 41 listings starting at $18,950
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2021 GMC Sierra 1500 in Oak Brook, IL
4 Great Deals out of 34 listings starting at $18,950
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2021 GMC Sierra 1500 in Hinsdale, IL
4 Great Deals out of 35 listings starting at $18,950
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2021 GMC Sierra 1500 in Oakbrook Terrace, IL
4 Great Deals out of 36 listings starting at $18,950
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2021 GMC Sierra 1500 by body style
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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.
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