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*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.
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Used
2021 GMC Sierra 1500 trucks
for sale
near
Prospect Heights, 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 SLE






Used
2021 GMC Sierra 1500 Denali






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Second car I purchased from castle gmc our sales person
Second car I purchased from castle gmc our sales person was Nubia /great experience every time helpful and always greats us as family highly recommend castle gmc Nubia and Brandon will take very good care of you . 👍🏻
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 SLT
Vehicle information
Features
Reviews
We have had two great experiences with Marino CJD.
We have had two great experiences with Marino CJD. We purchased a Chrysler Pacifica last summer and the team was extremely accommodating throughout the process. I just returned to the dealership for a service issue and was extremely impressed with how helpful and kind their service team was - we were working with Alex. I had my two (crazy) toddlers with me, and we had to stay longer than I expected. As a result, the team went above and beyond to help me manage my toddlers while also discussing the car service piece. I so appreciate the excellent customer service and for making us feel at home. Thank you Alex & Marino CJD!!!!
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.






Certified
2021 GMC Sierra 1500 AT4
Vehicle information
Reviews
Fantastic service!
Fantastic service! Polite knowledgeable individuals who get you in and out of the Quick Lane shop as soon as possible!
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 SLT
Vehicle information
Features
Reviews
Great staff and very good deals on new vehicles.
Great staff and very good deals on new vehicles. Quick, friendly and very helpful. I would recommend if your looking for a great deal check with these guys first. They will get you that Great deal others can't.
Vehicle information
Features
Reviews
My sales person at Castle Chevrolet was Tony Twall.
My sales person at Castle Chevrolet was Tony Twall. He was awesome to work with. He answered all my questions and was very knowledgeable. I have to say that this was the best vehicle buying experience I have ever had. My next purchase will be with the Castle dealership in McHenry IL and I will ask for Tony to be my sales person.
Used
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.
There are additional matching cars outside your search area.
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Certified
2021 GMC Sierra 1500 AT4
Vehicle information
Features






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features






Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features






Vehicle information
Features






Used
2021 GMC Sierra 1500 Base
Vehicle information
Features






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features






Vehicle information
Features
GMC Sierra 1500 prices by year
Model year | Prices from | Deals |
---|---|---|
2026 GMC Sierra 1500 | $36,000 | |
2025 GMC Sierra 1500 | $35,495 | 2 Good deals |
2024 GMC Sierra 1500 | $34,998 | 31 Good deals |
2023 GMC Sierra 1500 | $30,699 | 37 Good deals |
2022 GMC Sierra 1500 | $33,890 | 7 Great deals |
2020 GMC Sierra 1500 | $27,950 | 16 Good deals |
2019 GMC Sierra 1500 | $16,999 | 11 Good deals |
*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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6 Great Deals out of 40 listings starting at $28,300
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9 Great Deals out of 45 listings starting at $28,300
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9 Great Deals out of 46 listings starting at $28,300
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