New and used 2025 GMC Sierra 1500 trucks for sale near Highlands Ranch, CO

I have been a service customer for over 20 yrs, on my various vehicles. I recently worked with Miranda in the service dept. and I must say she was great. She demonstrated excellent customer service skills, with a great attention to detail. For such a young person I was more than pleased with the way she dealt with me, providing excellence in service. What a great representative of your dealership!

I have the 1500 double cab with standard bed. The reason I have this vehicle is I really like the 6.5 foot bed. The crew cab with same bed is just too long. The things I dislike about this model is that it only comes in the SLE model. For the 2025 that means the external mirrors do NOT have a power fold in and it does not have a seat memory for more that one driver. The power fold in for the mirrors is extremely important to me.

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

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

Kyle helped us and was fantastic! He worked was low pressure, willing to work with us and very professional! We highly recommend!!!

Friendly and knowledgeable staff. Thank you for your help and we love our new car!

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,

I spoke with Adam at the Sterling Auto Sales Franktown dealership looking for a specific vehicle at 4pm. He had it delivered to them the next day as I traveled from out of town. The vehicle was ready and warmed up for me to test drive when I arrived. No high pressure sales, the vehicle was clean, loaded with extras, and drove perfect. All my questions were answered and the sale was fast and smooth. I am very happy with my purchase. I would highly recommend this dealership.

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.

Great experience buying a new vehicle. Would purchase from again. They have a great selection of vehicles to choose from. This is a first class car dealership.

Jenny Rose is the best service advisor that we?ve ever had. She made sure that all repairs were completed thoroughly and quickly. We will continue to get our Tahoe serviced here.

Went above and beyond all expectations! The team is very responsive and helpful, all of our questions were answered in a very professional manner. I would definitely recommend this place to anyone who asks.

I?ve purchased several cars from AutoNation over the years and specifically with Ryan and Jason. Always unparalleled customer service and they go out of their way to ensure their customers are satisfied in their decision. Can?t say enough about how fantastic they are throughout the whole process.

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.

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.

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

Great experience. Matt and Tony were great to work with. No high pressure stuff and pushing extras

Austen is knowledgeable, efficient and friendly. I love that the tech sends you a video of your vehicle and what he?s working on. And the best of all is that they got me out in a timely manner

Yamile was knowledgeable, professional, empathetic and a terrific asset for you. She is a keeper!!! I could not be more pleased with the service she provided.