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New and used
2026 GMC Sierra 1500 AT4 trucks
for sale
near
Prosper, TX
- 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
Great dealership from top to bottom !
Great dealership from top to bottom ! I will always use them for all my automotive needs.

New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Had a great experience there hassle free.
Had a great experience there hassle free. Jermey Burrell had everything laid out for me when we got there. I would recommend to anyone. Keep up the nice work.

New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
The Dealership was great to work with from my initial
The Dealership was great to work with from my initial contact through the buying process. They took about a hour training me on all the features of the car. Their follow-up asking me how I like was an added touch.

New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Excellent experience.
Excellent experience. This dealership is the easiest I?ve ever worked with. Alex was great to work with. I would recommend Freeman GMC to anyone wanting to purchase a new car. Also, their service department is excellent.






New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Jarrett Abel has been my Service Adviser for several
Jarrett Abel has been my Service Adviser for several years. He always takes care of scheduling my appointments and getting my Chevy P/U serviced. The service department does a terrific job of getting vehicles serviced quickly.






New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
All staff are kind and professional.
All staff are kind and professional. The facility is clean and welcoming. I love the shuttle they offer to take you to and from your home.






New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Jeremy was incredible and made the process of buying a
Jeremy was incredible and made the process of buying a new car so easy. When it’s time for a new car, he will be my go to salesman.




New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Robbie, my salesman, was outstanding!
Robbie, my salesman, was outstanding!! He made it painless and is absolutely customer focused. Pricing was ultra-competitive. Dealership was clean. We will definitely go back.






Vehicle information
Features
Reviews
Outstanding service in all departments!
Outstanding service in all departments! They are the epitome of the gold standard. I highly recommend






New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Vary nice people, vary good at helping In explaining
Vary nice people, vary good at helping In explaining about the car,and the price. I was not able to go to get the car do to Family issues.






New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Several sales personal where informative and
Several sales personal where informative and knowledgeable in customer service. I didn’t purchase a vehicle but will give Vanguard the first choice at sales.






New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Service department is top notch.
Service department is top notch..best of the best! Friendly yet professional, capably handled my every concern. Ride to/from my office very nice and appreciated touch!
Vehicle information
Features
Reviews
I hate singing the service for an intermittent issue
I hate singing the service for an intermittent issue likely caused by a computer chip, on board computer or software but it a serious issue when the Adaptive Cruise control just locks the brakes up at cruising speeds over 55 MPH. I am hopeful they will eventually figure out the issue. This time I requested they just deactivate Adaptive Cruise as I?m worried about serious injury. The last time the brakes locked up out of the blue, I almost lost control of the vehicle and it slide sideways almost flipping at 70 MPH.
Vehicle information
Features
Reviews
Great experience from start to finish.
Great experience from start to finish. Our salesperson, Clayton Haas, was straightforward and efficient, and got us to the price we wanted






New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Nice sales people.
Nice sales people. Easy to work with, but would not move on the price of the car.






New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Vehicle information
Features
Reviews
They had the vehicle I wanted so it was fast, easy on the
They had the vehicle I wanted so it was fast, easy on the paperwork, and I got a good deal. Bruce is an excellent salesperson!






New
2026 GMC Sierra 1500 AT4
Vehicle information
Features






New
2026 GMC Sierra 1500 AT4
Vehicle information
Features






New
2026 GMC Sierra 1500 AT4
Vehicle information
Features
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
128 listings starting at $48,960
-
GMC Sierra 1500 2026 SLT
90 listings starting at $58,345
-
GMC Sierra 1500 2026 Denali
78 listings starting at $67,009
-
GMC Sierra 1500 2026 Denali Ultimate
62 listings starting at $81,240
-
GMC Sierra 1500 2026 Pro
28 listings starting at $39,191
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