Save your search and get notified when new inventory arrives.
Contact seller
Customize your budget
*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.
About your privacy: Cars.com is asking for your ZIP and credit rating because it helps us to make an educated guess at your sales tax and loan interest. These two factors can greatly change your monthly payment.
New and used
2026 GMC Sierra 2500 AT4 trucks
for sale
near
Geneva, 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
2026 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Anthony greeted me in the parking lot and was friendly
Anthony greeted me in the parking lot and was friendly and professional. He quickly brought the car out that I wanted to see. Negotiations were very fair and the paperwork was done in a timely maner. I love my new/pre-owned HyundaiTucson. Thank you Anthony and the team! I'll see you again when I need my next vehicle.






New
2026 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
alex gave me a great deal on our new buick.
alex gave me a great deal on our new buick..... thank you so much alex.






New
2026 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
2026 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Great people to work with.
Great people to work with. Very professional, courteous, helpful and thorough. They follow through with all of their commitments. The trade process was straight forward and was just as agreed.






New
2026 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Great experience, my Sales person was Gene B and honestly
Great experience, my Sales person was Gene B and honestly he was the most helpful and made everything so smooth and easy. Super Recommended to go to Woody?s in Naperville IL

New
2026 GMC Sierra 2500 AT4
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.






New
2026 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Purchased a Camaro from 900 miles away.
Purchased a Camaro from 900 miles away. Anthony and Dan did a good job and made the purchase easy. They also assisted in shipping the car to me.






New
2026 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 .!
Vehicle information
Features
Reviews
I had a great experience.
I had a great experience. I purchased a car at my second visit. On my first visit Luke the manager was very kind. We decided to return because our impression of Luke. Herman was the sales representative. He was very knowledgeable.
There are additional matching cars outside your search area.
Partial matches are generated by applying your search criteria to a larger search area. Our goal is to help you discover additional cars that match your search preferences.
As a benefit to some of our dealer customers, we display their listings first.






New
2026 GMC Sierra 2500 AT4
Vehicle information
Features






New
2026 GMC Sierra 2500 AT4
Vehicle information
Features






New
2026 GMC Sierra 2500 AT4
Vehicle information
Features






New
2026 GMC Sierra 2500 AT4
Vehicle information
Features






New
2026 GMC Sierra 2500 AT4
Vehicle information
Features






New
2026 GMC Sierra 2500 AT4
Vehicle information
Features






Vehicle information
Features
Vehicle information
Features

New
2026 GMC Sierra 2500 AT4
Vehicle information
Features

New
2026 GMC Sierra 2500 AT4
Vehicle information
Features
-
Prev - 1
- 2
-
Next
*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 2026 AT4
29 listings starting at $69,948
- ${price_badge()}
- ${ami_badge()}
- ${battery_badge()}${ev_report_link()}
- ${hot_car_badge()}
- ${award_badge()}
- ${cpo_badge()}
${price_badge_description}
${ami_badge_description}
The EV Battery Rating is based on this vehicle's current expected range relative to the vehicles expected range when new. ${battery_badge_text}
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.