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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 AT4
Vehicle information
Features
Reviews
Friendly staff.
Friendly staff. Showroom was super clean. Car was ready for test drive when we arrived. Loved the car and the service.
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.






GMC Certified
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
10/10 experience.
10/10 experience. Definitely worth the drive to get the car I wanted. Brian was great! He got us the best deal on a brand new suv.
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 Denali
Vehicle information
Features
Reviews
I just bought my 2017 corvette grand sport two weeks ago.
I just bought my 2017 corvette grand sport two weeks ago. I flew in from New York. I can’t say enough good things about the process. We worked with Armin, he was top notch. He made every aspect about buying this car seamless and easy. He even arranged an Uber to pick me up from the airport to bring me right to the dealership. We just adore our new car. It’s perfect!! A million thanks 🙂 Joe and Denise
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 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.
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
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.
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
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 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






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.






GMC Certified
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
I have brought my vehicle in for every oil change I have
I have brought my vehicle in for every oil change I have needed. Always courteous and professional, my car gets a diagnostic check every time and is freshly washed. I like that the Service Department send out coupons, and making an appointment is easy online or with a phone call.






GMC Certified
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Very professional, excellent communication Friendly
Very professional, excellent communication Friendly staff, and had the vehicle we wanted, would deal with them again






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
This dealer had the used car I was looking for.
This dealer had the used car I was looking for. The car had the right mileage and a clean fax. The dealership was 1 hour 20 minutes away from me heavy traffic all the way. I figured I would call and ask about the car anyway but I wasn’t planning to drive there. I talked to Phil, a sales rep, and what a gentleman he was. He told me the car was a trade-in and was in fantastic condition. Well, he talked me into driving down there. I arrived about 10 in the morning and left with my new used car by 1:30 that afternoon. I walked Phil through my 128 point inspection, 2 test drives and I ending up looking under the car for any problems. I could not find anything wrong. The car was in great condition just as Phil had described. Phil was a perfect gentleman through the whole process. Every dealership employee I encountered could not do enough for me. Great experience - great car! 6 star experience!






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Amazing place from the start give them a try before
Amazing place from the start give them a try before others ask for Edgar Irving and long in Chicago






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Another great trip to A Phillips Chevy!
Another great trip to A Phillips Chevy!! Fast service, clean shop, friendly service staff. Been buying from Phillips since 2002. Will be back soon, Thank you






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I recommend Old Orchard Nissan, is the BEST place to
I recommend Old Orchard Nissan, is the BEST place to service a Nissan! Gary is an incredible Manager, that leads a great team of Service Consultants that have wonderful Customer Service skills like Daniel and Mary. I have had nothing but the BEST Service experience with all of these wonderful individuals... I appreciate you Old Orchard Nissan for having a remarkable Service team!






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Brought my car in for regular maintenance and Gary made
Brought my car in for regular maintenance and Gary made the whole process really smooth. Everything was well organized, and once the service was done, he went over all the details with me. I was impressed with how easy it all was and would definitely recommend this place.






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
There are some dealerships and then there is
There are some dealerships and then there is Betthenhausen Fiat! Great folks that made the process so simple!






Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
TY was and amazing help to me!
TY was and amazing help to me! He is in fact a real like rockstar who made this complicated process the easiest it could’ve been!






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
What a great experience at D?
What a great experience at D? Arcy Buick Dealership in Joliet IL. The staff was friendly, honest, and made the whole process easy. Ray our salesperson went above and beyond. I love my new Envision Sport and would definitely recommend D?Arcy Buick and ask for Ray!!






Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Recently purchased a 2023 Ford Edge from the Lincoln
Recently purchased a 2023 Ford Edge from the Lincoln Dealership in Naperville. I'm very Happy with the purchase as well as with the Experience. The sales rep, Alfonso was very helpful and reached out to check in after the purchase. I would definitely recommend them to family and friends.






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
I need a new radio.
I need a new radio. My oil change is fixed. I need to schedule a long appointment
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GMC Sierra 1500 prices by year
Model year | Average price | Deals |
---|---|---|
2026 GMC Sierra 1500 | $61,896 | |
2025 GMC Sierra 1500 | $58,515 | 5 Good deals |
2024 GMC Sierra 1500 | $54,256 | 6 Great deals |
2023 GMC Sierra 1500 | $48,448 | 28 Good deals |
2022 GMC Sierra 1500 | $43,455 | 20 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 $37,932, with pricing starting at $13,999.
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.
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.
Research the 2021 GMC Sierra 1500
Compare the 2021 GMC Sierra 1500
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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.