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Used
2021 GMC Sierra 1500 trucks
for sale
near
Frankfort Square, 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
Vehicle information
Features
Reviews
Always great service when I take the car in.
Always great service when I take the car in. Always keep me updated throughout the process.
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 Denali
Vehicle information
Features
Reviews
Honest and caring service went the extra mile to secure
Honest and caring service went the extra mile to secure my warranty which had just expired.I have been doing business with Advantage of Bolingbrook for over 30 years
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 AT4
Vehicle information
Features
Reviews
I recently sold my 2014 Corvette Z51 to Diamond
I recently sold my 2014 Corvette Z51 to Diamond Motorwork, and the experience was outstanding from start to finish. I worked with Luke, who was incredibly kind, patient, and professional. He made the entire process seamless — even going out of his way to meet me at my workplace to pick up the car and finalize paperwork. His flexibility and attention to detail made it easy to choose Diamond over other offers. The price was fair, their reputation solid, and they took the time to ensure I was comfortable with every step. I especially appreciated how Luke worked around my schedule and kept everything stress-free. The owner, Rami, was also very attentive. While Luke handled things so smoothly that Rami didn’t need to step in much, he was present and supportive throughout — especially when I requested a wire transfer instead of a check. That extra layer of reassurance gave me real peace of mind. If buying from Diamond is anything like selling to them, I’ll be stopping in there first when it’s time for my next car. Highly recommend Diamond Motorwork for anyone looking for a trustworthy, respectful, and hassle-free automotive experience.
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 Denali
Vehicle information
Features
Reviews
Amazing as always!
Amazing as always! Paul and his team always take care of me and the process is efficient.
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
It was a very smooth experience, Nick Marzullo was
It was a very smooth experience, Nick Marzullo was extremely helpful - even off of the clock!
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
From the time I walked into the establishment I was
From the time I walked into the establishment I was greeted and treated with respect. I love how the salesman was knowledgeable about the exact vehicle I came in for. He went above and beyond and through every obstacle that possible came my way. This car purchase was an early birthday gift to myself and I am so happy with my decisions.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
The guys here were great!
The guys here were great! Had the truck pulled out and ready for us to test out. We came from out of town and they kept our kids entertained while doing all the paperwork. It was a quick, hassle free process. True mom and pop shop and they treat you as such. Thank you so much.
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
I had a very good experience with caleb alvardo with
I had a very good experience with caleb alvardo with purchasing my 2024 honda rideline
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
No issues 2 months later.
Bought 3 work trucks. Good price, no nonsense or upsell. 2 months have gone by and I am very happy so far. The amount of trucks they have is beyond belief.
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Chuck Was Amazing!
Chuck Was Amazing!!! I Have Had Some Trouble With Credit In The Past Chuck Got Me A Great Rate And Perfect Payment Dealership Is Wonderful Too Not Your Typical Used Car Lot Very Clean And Modern And There Cars And Trucks Are Very Clean
Vehicle information
Features
Reviews
Great job in and out.
Great job in and out. IT'S been a good experience so I will let people know.
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
World Kia went out if their way to make me and my family
World Kia went out if their way to make me and my family comfortable, inside the deal and out. we couldn’t be happier with our new vehicle
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Every Time I visit advantage chevrolet I receive great
Every Time I visit advantage chevrolet I receive great service. I have chevy dealership near my house. But I like going to this one. This is where I bought my car.
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Our experience at Phillips has always been a great one.
Our experience at Phillips has always been a great one. This is our second purchase with them and will likely come back for any future car purchases. Jaime was great to work with and answering all our questions and willing to get the answers to questions he was not able to answer. We are vey pleased with our purchase and the great service we recieved.
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Went very smoothly The is the fifth vechicle we have
Went very smoothly The is the fifth vechicle we have purchased from this dealer and really appreciate the process of the purchase We plan taking this vechical back for service for the entire time we own it
GMC Certified
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
I've been purchasing automobile from Haggerty in Villa
I've been purchasing automobile from Haggerty in Villa Park for OVER 25 years. Also have them serviced at the Villa Park Haggerty location and body work done at the Glen Ellyn Chevy location. Good people and great service,
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Amazing
Mike R was amazing. He even traveled to Chicago to bring our car to a different locations so we could see it. I would highly recommend this location.
Certified
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
We had an issue with the carpet in a new vehicle but they
We had an issue with the carpet in a new vehicle but they are working with Ford to address it. I was very satisfied with the service.
GMC Certified
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
I had a great experience.
I had a great experience. I was in need of a new car, and they helped me so efficiently. I got a great deal in the car I wanted in the color I wanted. I am so happy I went to woody in Naperville.
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Gerald Nissan is proactive about service and will reach
Gerald Nissan is proactive about service and will reach out to customers to schedule service when needed. The staff is extremely professional and friendly and works hard so that the customer is satisfied. From my first call from Melissa and then being taken care of by the service tax, Kevin and Mark I couldn't have had a better experience. Also, when I first brought my car in with the problem, Dave, the manager did a thorough check of my problem and immediately submitted an order to get the part I needed.
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GMC Sierra 1500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 1500 | $61,428 | 1 Good deal |
| 2025 GMC Sierra 1500 | $57,778 | 12 Great deals |
| 2024 GMC Sierra 1500 | $47,611 | 8 Great deals |
| 2023 GMC Sierra 1500 | $47,368 | 5 Great deals |
| 2022 GMC Sierra 1500 | $43,695 | 5 Great deals |
| 2020 GMC Sierra 1500 | $34,821 | 14 Good deals |
| 2019 GMC Sierra 1500 | $30,492 | 6 Good deals |
| 2018 GMC Sierra 1500 | $26,274 | 12 Good deals |
| 2017 GMC Sierra 1500 | $24,069 | 3 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 $36,197, with pricing starting at $14,980.
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 body style
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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.
