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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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New and used
2025 GMC Sierra 2500 AT4 trucks
for sale
near
Oak Brook, 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.






New
2025 GMC Sierra 2500 AT4
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.
So far so good!
So far so good! This truck is the nicest truck I have ever driven. The stance, ride comfort and options are top notch. I went from a 2023 High Country that was having drive train issues but had all the creature comforts that you would expect in a top of the line truck. With the lack of confidence in that particular models 10 speed transmission issues, it became necessary to reestablish my confidence in my General Motors product.






New
2025 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Worked with Brian again and had a smooth and great
Worked with Brian again and had a smooth and great experience. I highly recommend this dealership and Brian.






Used
2025 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
My experience pertains specifically to the Ford service
My experience pertains specifically to the Ford service department - not the actual car dealership. So this place is clearly under new management. After getting some ridiculous estimates from other mechanics and body shops, I decided to give this place a try…. I got outstanding service from Pat Gavin. He quickly got me estimates which confirmed my suspicions that the other mechanics were trying to gorge me into paying for a bunch of unnecessary repairs. Pat & team were able to fix several problems that had been lingering on my car for several months. I always postponed getting these things fixed because other mechanics wanted literally $5-10k for what seemed like small issues. I’m ecstatic to have finally found someone in this industry that conducts business with (1) integrity and (2) high standards in delivering quality! It’s such a relief to know where to go to get my car fixed without getting guided into a bunch of high priced and unnecessary work. I also got my car back cleaner than when I dropped it off!! Everything from the service to the price to the quality of the work exceeded my highest expectations. 1 month later my car is running as good as new. If only everything in the auto industry (particularly the service & repair industry) was run this way.

New
2025 GMC Sierra 2500 AT4
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 . 👍🏻

New
2025 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Great Cars and also good service.
Great Cars and also good service. Vincent Vega was very helpful thank you Vincent for all your help. This is our third car from Castle Buick GMC. We loved thank you .!
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Used
2025 GMC Sierra 2500 AT4
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2025 GMC Sierra 2500 AT4
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2025 GMC Sierra 2500 AT4
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New
2025 GMC Sierra 2500 AT4
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New
2025 GMC Sierra 2500 AT4
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2025 GMC Sierra 2500 AT4
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New
2025 GMC Sierra 2500 AT4
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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.
**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.
GMC Sierra 2500 trims
-
GMC Sierra 2500 2025 Denali
2 Great Deals out of 42 listings starting at $69,500
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GMC Sierra 2500 2025 AT4
25 listings starting at $70,000
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