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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
2026 GMC Sierra 2500 AT4 trucks
for sale
near
Harvey, 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
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.






Vehicle information
Features
Reviews
We came in late in the day with an unexpected emergency
We came in late in the day with an unexpected emergency car repair and were very happy with the service provided. Everything was great! Check in, our shuttle driver Vicky was so kind and even stayed late to take us home which we appreciated. The car was fixed in a short amount of time and shuttle driver back Ed also very nice. We've purchased and had our cars serviced from D'Arcy since 1990 and could not be more pleased! Thank you!
Vehicle information
Features
Reviews
Service rep was ?
Service rep was ?on the ball? Understood my request and my lack of correct nomenclature






Vehicle information
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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.

New
2026 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Great purchase experience
The Team that my husband and I worked with Dillon, Tim & Dan, were all very helpful and courteous. We had a certain price point and they managed to get us very close to where we needed to be AND we got the car we really wanted. Buying process was seamless, communication was great, and customer service was wonderful. This was our second purchase with Haggerty and we highly recommend!! Thank you






New
2026 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Dave and the rest of the staff were amazing.
Dave and the rest of the staff were amazing. When I first came in, my intention was solely to look at a bunch of different dealers and see what I liked. Even with just looking, Dave gave me the same attention as if I were buying that day without being too pushy to buy. He asked me what I liked and showed me a few options, took me for a test drive and informed me of the pricing. After looking around at other dealers, the car from Arnie Bauer was the best option and fit for me. However, it wasn?t just the car, was Dave?s amazing customer service. Other dealers once they heard I was only looking, weren?t interested in really helping with the same enthusiasm as if I were set to buy. Dave made the loookinf and purchasing process smooth, helped ensure great pricing and just overall made my first new car buying experience amazing and one I won?t forget. 100/10 experience






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Reviews
Buying my First car
I initially bought my car in July 2022. Our old family car broke down and needed a car. I had been window shopping for cars and looked but I didn?t see a car that stuck out to me until I saw the Buick Envision and fell in love with it and the color. The staff was super helpful throughout the buying process and I?m super happy with my purchase, I haven?t had my first oil change yet but I will def get that done soon at my dealer.

New
2026 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.






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
Worked with Brian Newcomb, he was amazing!
Worked with Brian Newcomb, he was amazing! He made the buying process a breeze! Highly recommend!






New
2026 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Customer service one of the best AJ was very helpful I
Customer service one of the best AJ was very helpful I been a customer for years I will definitely recommend this place to anyone.






New
2026 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Ernie was a great salesman he walks you through eve step
Ernie was a great salesman he walks you through eve step of the process






Vehicle information
Features
Reviews
Great customer service on sales.
Great customer service on sales. Very fast to contact me for support and very thorough on follow up calls






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
Reviews
Needed key fobs replaced.
Needed key fobs replaced. They were ordered and came in within the next couple days. Scheduled the service appointment and all was completed within two days. Have received great service upon all my visits.

New
2026 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
I had major work done on my car and I couldn?
I had major work done on my car and I couldn?t be happier with the turnout. I had my transmission replaced along with a couple other issues on my 2017 vehicle. It took a while for the entire thing to get completed, but I was given status updates throughout the process. I picked up my vehicle late last night (5:45 pm). I was surprised the service manager was still there and he took the time to go over everything that had been done to my vehicle. The total price was slightly lower than what I was I was told it would be at the start. I was very happy and wasn?t expecting that. My car is driving great today and so far I?m extremely happy with the result from my service experience. I?m very appreciative of the help I was given and the customer service I received. Thank you Justin and everyone who worked on my car. ?

New
2026 GMC Sierra 2500 AT4
Vehicle information
Features
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About the 2026 GMC Sierra 2500 AT4
AT4 shown.
- Seating
- 5
- Door count
- 4
- Drivetrain
- Four Wheel Drive
- Combined MPG
- 0
- Transmission
- 10-Speed A/T
- Engine
- 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)

How much does the 2026 GMC Sierra 2500 AT4 cost?
The 2026 GMC Sierra 2500 AT4 price depends on optional features. Prices typically start at $71,600.
What are some similar vehicles and competitors of the 2026 GMC Sierra 2500 AT4?
The 2026 GMC Sierra 2500 AT4 compares to and/or competes against the following vehicles:
AT4 (2 styles)
Style | |
---|---|
4WD Crew Cab 172" AT4 | 4WD Crew Cab 159" AT4 |
Inventory price | |
Starting at $71,800 | Starting at $71,600 |
Combined MPG | |
0 | 0 |
Engine | |
470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel 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.
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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.