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New and used
2026 GMC Sierra 1500 AT4 trucks
for sale
near
Willowbrook, 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 1500 AT4
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!






New
2026 GMC Sierra 1500 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.


New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I want to give a huge shout out to the staff at this
I want to give a huge shout out to the staff at this location in matteson. As a first time car buyer it was overwhelming but Jeremy barron our sales person made it it a great experience and shout out to the manager in matteson for getting us an amazing deal and the fiance guy to you all we're amazing!


New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
The service shop diagnosed and repaired my vehicle
The service shop diagnosed and repaired my vehicle quickly within the week. Very satisfied with my service. I would recommend this professional shop. A good repair facility is rare.






New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Excellent as well as timely service.
Excellent as well as timely service. However, was not told in advance that paying with Credit Card would have a 3% fee.






New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Service rep was ?
Service rep was ?on the ball? Understood my request and my lack of correct nomenclature

New
2026 GMC Sierra 1500 AT4
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.






New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
What a great experience at D?
What a great experience at D? Arcy Buick Dealership in Joliet IL. The staff was friendly, honest, and made the whole process easy. Ray our salesperson went above and beyond. I love my new Envision Sport and would definitely recommend D?Arcy Buick and ask for Ray!!






New
2026 GMC Sierra 1500 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.






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 1500 AT4
Vehicle information
Features
Reviews
Excellent sale team and service department is great only
Excellent sale team and service department is great only buy cars from D?Arcy team. Myself and family have buying cars from D?Arcy for years






New
2026 GMC Sierra 1500 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 1500 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






New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Still shopping wish they can give answers without phone
Still shopping wish they can give answers without phone calls with dealers trying to make a sale






New
2026 GMC Sierra 1500 AT4
Vehicle information
Features

New
2026 GMC Sierra 1500 AT4
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Vehicle information
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Good .
Good . Always bought cars from them. Since 1973 I bought a Oldsmobile Cuttlas Supreme. Vans, trucks and SUV?s. Close by easy to get to. That?s it.






New
2026 GMC Sierra 1500 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 1500 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






New
2026 GMC Sierra 1500 AT4
Vehicle information
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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.
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2026 GMC Sierra 1500 AT4
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2026 GMC Sierra 1500 AT4
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New
2026 GMC Sierra 1500 AT4
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New
2026 GMC Sierra 1500 AT4
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New
2026 GMC Sierra 1500 AT4
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New
2026 GMC Sierra 1500 AT4
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New
2026 GMC Sierra 1500 AT4
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New
2026 GMC Sierra 1500 AT4
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About the 2026 GMC Sierra 1500 AT4
AT4 shown.
- Seating
- 5
- Door count
- 4
- Drivetrain
- Four Wheel Drive
- Combined MPG
- 23
- Transmission
- 10-Speed A/T
- Engine
- 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel)
How much does the 2026 GMC Sierra 1500 AT4 cost?
The 2026 GMC Sierra 1500 AT4 price depends on optional features. Prices typically start at $66,800.
What is the MPG of the 2026 GMC Sierra 1500 AT4?
The 2026 GMC Sierra 1500 AT4 offers up to 21 MPG in city driving and 24 MPG on the highway for a combined rating of 23 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 options, driving conditions, driving habits, vehicle maintenance, and other factors.
What are some similar vehicles and competitors of the 2026 GMC Sierra 1500 AT4?
The 2026 GMC Sierra 1500 AT4 compares to and/or competes against the following vehicles:
AT4 (2 styles)
Style | |
---|---|
4WD Crew Cab 147" AT4 | 4WD Crew Cab 157" AT4 |
Inventory price | |
Starting at $66,800 | Starting at $67,300 |
Combined MPG | |
23 | 23 |
Engine | |
420.0-hp, 6.2-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.
GMC Sierra 1500 trims
-
GMC Sierra 1500 2026 Elevation
163 listings starting at $48,691
-
GMC Sierra 1500 2026 SLT
70 listings starting at $55,100
-
GMC Sierra 1500 2026 Denali
67 listings starting at $62,250
-
GMC Sierra 1500 2026 Denali Ultimate
27 listings starting at $75,750
-
GMC Sierra 1500 2026 Pro
21 listings starting at $43,376
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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.