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Used
2021 GMC Sierra 1500 trucks
for sale
near
Warrenville, 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
3rd vehicle brought from JC…The entire process was quick,
3rd vehicle brought from JC…The entire process was quick, customer service was amazing, and without any issues. My husband and I worked with JC and couldn't imagine going anywhere else to purchase our vehicle. Jon is by far the easiest and most knowledgeable person to work with. His passion is the car industry and it shows. We will definitely be working with him in the future again!! Thank you Marino!!
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 Elevation
Vehicle information
Features
Reviews
Alex Alverio
Alex is the man to see he knows his vehicles. Easy to talk to great customer service, he finds the vehicle you need. Alex help us in every aspect. Would highly recommend this dealership and recommend you all to see Alex.
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 SLT
Vehicle information
Features
Reviews
Kept me appraised of what needed to be done .
Kept me appraised of what needed to be done . Went over the work done and what would need to br done in a future service. They washed my car.
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
My experience was good everyone explained everything to
My experience was good everyone explained everything to me step by step! Everyone was very friendly
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
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!
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
Although I didn’t end up making a deal with them, as I am
Although I didn’t end up making a deal with them, as I am to far upside down in my current car. I will say they were very nice to deal with, salesman I worked with was great, not overly pushy. Overall they were pretty fair and I would recommend them for a new car.






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Great Service. Upfront Dealer
Lots of Trucks to choose from. Very large compared to any other van dealer I have ever seen. The trucks all seemed to be in in pretty good shape. I ended up buying a cheaper truck for my business and it has been trouble free so far. Will check what the have when I need another van.






Vehicle information
Features
Reviews
Jose is the best i have bought multiple cars from him in
Jose is the best i have bought multiple cars from him in the past years. when you get here make sure you ask for him.






Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Al Piemonte Chevy
I only visit this dealership because Carlos is working in the service center. He is always great. He takes care of my vehicle quickly and I can always trust that my vehicle is fixed right.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
recently purchased a vehicle from Old Orchard Nissan, and
recently purchased a vehicle from Old Orchard Nissan, and I couldn’t be more satisfied with the entire experience. From the moment I walked in, the staff was welcoming, professional, and genuinely helpful — no pressure, just honest service. My salesperson, Jason Chu, was knowledgeable, patient, and took the time to answer all my questions. They helped me find the perfect car for my needs and made the process feel smooth and stress-free. The finance team also did a great job explaining everything clearly and worked to get me a great deal. The vehicle was clean, in excellent condition, and exactly as described. I truly appreciate the transparency, integrity, and care that went into every step of the process. Highly recommend Old Orchard Nissan to anyone looking for a reliable vehicle and top-notch customer service. I’ll definitely be back when it’s time for my next car!






GMC Certified
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Service
Made a online appointment came in and they did a oil change and tire rotation. Happy with the service.






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
2021 Toyota Highlander
Sales manager and staff were friendly, helpful. Sam was great to work with, very straightforward. No hidden fees, fair priced, I would recommend purchasing from them.






Certified
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I worked with Billy.
I worked with Billy. He were great to work with. Everything went very smooth and was a great experience. I would buy another car from them again! Everyone at the dealership we talked to was great!






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Great experience and no pressure from sales team.
Great experience and no pressure from sales team. Working with John Marcus made the purchase of the vehicle and easy process.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I thought the wait time was a little long for an oil
I thought the wait time was a little long for an oil change and tire rotation, especially when I made an appointment it took about an hour and a half.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
buena atención Joel Hernández muy amable y calidad en
buena atención Joel Hernández muy amable y calidad en servicio y rapidez en su trabajo






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I had a really great experience with the car dealership,
I had a really great experience with the car dealership, Eduardo helped me a lot with trying to buy a car that is a Camry, he is really good at trying to explain everything to me details to details. He has great spirit and energy!!






Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great service from Eduardo.
Great service from Eduardo. I don’t much about cars but he helped find one that best fit my needs.






Vehicle information
Features
Reviews
I had a fantastic experience at Huntley Ford buying a
I had a fantastic experience at Huntley Ford buying a Ford Ranger. Eduardo was professional and made the entire process stress-free.






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!
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GMC Sierra 1500 prices by year
Model year | Average price | Deals |
---|---|---|
2026 GMC Sierra 1500 | $61,122 | |
2025 GMC Sierra 1500 | $57,661 | 7 Good deals |
2024 GMC Sierra 1500 | $54,246 | 6 Great deals |
2023 GMC Sierra 1500 | $47,813 | 8 Great deals |
2022 GMC Sierra 1500 | $43,822 | 21 Good deals |
2020 GMC Sierra 1500 | $35,654 | 19 Good deals |
2019 GMC Sierra 1500 | $32,985 | 13 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 $37,801, 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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7 Great Deals out of 27 listings starting at $29,800
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7 Great Deals out of 28 listings starting at $29,800
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2021 GMC Sierra 1500 Trucks in Glendale Heights, IL
9 Great Deals out of 34 listings starting at $29,800
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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.