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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
Lone Tree, CO
- 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.






Vehicle information
Features
Reviews
Couldn't be happier!
Kyle helped us and was fantastic! He worked was low pressure, willing to work with us and very professional! We highly recommend!!!
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.






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Reviews
Five Star Service!
I drove right in, the Service Associate that greeted me was very polite and explained exactly what was going to be done, as I waited for my vehicle he came to check on me and asked if I had any other questions or concerns, it was a great experience and I will certainly be returning to Transwest GMC for all my service needs






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friendly, no pressure experience
Great car buying experience. Friendly, knowledgeable, no pressure salesman Kyle Berry. One minor problem was handled quickly and professionally with no hassle. Go see Kyle.






New
2025 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Kyi at Castle Rock Chevrolet is the best in the business.
Kyi at Castle Rock Chevrolet is the best in the business. If I could give more than 5 stars I would. I came to Castle Rock Chevrolet from Montana carrying the weight of a terrible deal I’d been locked into by Mike Maroone Chevrolet. I was horribly upside down on my previous vehicle, thanks to a deal that should never have been approved in the first place. It felt hopeless… until I connected with Kyi. Kyi didn’t just help — he changed everything. He took the time to understand my situation, walked me through every option with honesty and clarity, and treated me like a person, not a number. Thanks to his determination, professionalism, and integrity, I am now driving a 2017 Cadillac Escalade Premium Luxury — a vehicle I absolutely love, and a deal that finally makes sense for me and my family. What makes this even more impressive is that we did the entire deal remotely from Montana. Kyi made it unbelievably easy and stress-free — constant communication, no surprises, and everything was handled with total transparency. It was hands down the most respectful and seamless car-buying experience I’ve ever had. I also want to give credit to Luke, the desk manager, who was the one that made the numbers work. He took a tough situation and made the deal make sense — without cutting corners or playing games. It was clear he genuinely wanted to help, and I’m incredibly grateful for the effort he put in behind the scenes. Kyi and Luke are the kind of team members who elevate the entire Castle Rock Chevrolet experience. People from any state should be buying their cars here. I would do it all over again in a heartbeat. If you’re buying a car from Castle Rock Chevrolet, do yourself a favor — ask for Kyi. You’ll be glad you did. Thank you both — you’ve earned customers for life.






New
2025 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Very professional listened to my concerns made trading
Very professional listened to my concerns made trading easy trained me on the features I am very pleased with the purchase and the individuals that helped me






New
2025 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Found a desk area with electrical outlet the chairs were
Found a desk area with electrical outlet the chairs were kind of old and banged up, and it was kind of in the vending area. Wi-Fi was good for working, but the coffee area was all out of packets for coffee. Good service and they got me out quickly through the process for an oil change the first one on my vehicle and the first service at that location. It was good the The cut customer service was good






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Reviews
Rafeal was my contact there and he was great.
Rafeal was my contact there and he was great. He went above and beyond to communicate share photos and video and was very transparent. As a matter of fact the whole process and everyone was easy to work with. Not the dealer where sale and sale manager go back and forth to do some crazy negotiating. Open transparent and fair dealing. Rafeal was an advocate throughout and in and out with anew car well less than an hr after trade in paperwork






New
2025 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
I found the vehicle on the internet on Saturday and
I found the vehicle on the internet on Saturday and contacted the sales person to schedule an appointment to look at the vehicle on Monday morning. It was exactly as described with available car fax and all necessary information. I liked the Denali very much, purchased it and drove it home Monday afternoon. It was a very pleasant experience in every way. Matt and Tyler were great.






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Reviews
Rafael H was very attentive to what we were looking for
Rafael H was very attentive to what we were looking for in a clean used diesel p up . His assistance in our purchase with our purchase was very good . professional, not pushy Gerald & Kay Schreiber






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I had the pleasure of working with Brittany, who was very
I had the pleasure of working with Brittany, who was very informative and a pleasure to work with.






New
2025 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Looked for a low mileage Acura TLX or TSX for six months
Looked for a low mileage Acura TLX or TSX for six months and I found this car near me. It was nicely detailed and looked well cared for from the posting on Cars dot com. The sales rep called me very soon after my initial query. The entire buying process took an effortless one hour and I was on my way with the beauty,






New
2025 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Joey was great service manager.
Joey was great service manager...car service correct and prompt...very positive experience. Car was returned clean and with a full service report. Highly recommend dealership.






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Fantastic service
The service was top-notch. I had a broken mirror and worked with Greg Mudd, who found me a great deal on a mirror, painted it, and installed it, saving me about $350. He was incredibly kind and responsive. It was a great repair experience when I had been anticipating a stressful one.






New
2025 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
I was here at the dealership a few months ago and I
I was here at the dealership a few months ago and I traded in my 2010 challenger on a 2014 challenger. The new one I purchased was an absolute gem. It only had about 600 miles on it. I thought “no way will this get approved” I’ll have to drive two hours back home without the new vehicle. Well I am pleased that I had Vincent and Kurt to help every step of the way. Between the two, they got me the best deal possible and I got exactly what I wanted. Never any pressure at all from anyone. The whole team there was exceptional to work with. I couldn’t have asked for a better car buying experience. Thank you to everyone. I definitely recommend going to Omeara. I will for sure be going back when I need to purchase another vehicle. Bill






New
2025 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Johnson Auto Plaza - Brighton, CO
We were shopping for a new car. The whole process was a good experience from the beginning to the end. I would certainly buy from them again!
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About the 2025 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 2025 GMC Sierra 2500 AT4 cost?
The 2025 GMC Sierra 2500 AT4 price depends on optional features. Prices typically start at $71,000.
What are some similar vehicles and competitors of the 2025 GMC Sierra 2500 AT4?
The 2025 GMC Sierra 2500 AT4 compares to and/or competes against the following vehicles:
Is the 2025 GMC Sierra 2500 AT4 reliable?
The 2025 GMC Sierra 2500 has an average reliability rating of 4 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2025 Sierra 2500 owners.
100% of drivers recommend this car
- Comfort 5.0
- Interior 5.0
- Performance 5.0
- Value 4.0
- Exterior 5.0
- Reliability 4.0
AT4 (2 styles)
Style | |
---|---|
4WD Crew Cab 159" AT4 | 4WD Crew Cab 172" AT4 |
Inventory price | |
Starting at $71,000 | Starting at $71,200 |
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.
GMC Sierra 2500 trims
-
GMC Sierra 2500 2025 Pro
48 listings starting at $48,360
-
GMC Sierra 2500 2025 Denali
37 listings starting at $75,346
-
GMC Sierra 2500 2025 Denali Ultimate
20 listings starting at $90,337
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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.