Used GMC Sierra 2500 trucks for sale near Denver, CO under $1,000,000

I had a great experience as a first time buyer from a dealership and my sales representative was extremely polite and very helpful in helping me purchase a vehicle that I liked.

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.

Always great service and a good place to buy a car. I bought my first car here in 2000. Then another in 2013, and then another in 2017.

Wonderful truck. Has had zero problems. I am trading for a new one. Truck is all original with no modifications. Truck is in excellent condition.

Our salesman Eissa Hizhley, was a pleasure working with, he got us exactly what we wanted. Finance Deptment was easy to work with. We will go back again.

One very awesome vehicle. Checks all the boxes you need in a truck and exceeds expectations on quality, performance, and looks great ,too. Love my nre truck.

I had a great experience with personable professionals. I would highly recommend working with Julio and Nicholas. I?m very happy with my new vehicle!

This truck is the truck that all others should look up to. It rides great, will tow a house, runs smooth, and gets great fuel economy. The Allison transmission is so smooth. The AT4 looks great too.

Very good experience. Why do I need to give this review 25 words. That is 22 words too many. Cars dot com is a poor platform for reviews

I've owned every other American truck and this is my first GMC. I bought the 2500 HD Texas Edition. I absolutely love this truck. It's everything I could have hoped for and more. It is able to pull my 30' travel trailer with no problems. So now when we go out with our trailer I'll have no worries. The look and feel of the truck is outstanding. The 6.6L gas engine actually gets great gas mileage. It gets about the same as my Ford f150 ecoboost. Probably better on the highway. Looking at about 13 miles in the city and 15 plus on the highway. Definitely got a better truck for the price compared to any other american models with the same characteristic and options.

We Just bought our third used car from AutoNation Ford. Always happy with the results! Will buy our fourth one here as well. Great selection and not too much pressure.

What a gorgeous truck, runs good, sounds good and has all of the amenities I need although I am looking forward to their next interior upgrade.

The experience of buying this Dodge ram truck from this dealership was exceptional! The dealership was courteous, professional, attentive, and kind. It was a really great experience!

I've owned my truck for nine years now it is never once let me down. I'm about to put my first set a tires on it and brakes other than that I don't plan on getting rid of it it's never let me down and after reading all the other reviews it makes me realize they don't make them like they used to as they used too!

Townson was very attentive and is always very polite. This is my third purchase from this location. The only complaint I have is the coffee is terrible. Otherwise it was great. I do wish it didn?t take 4 hours to buy a car.

My experience with Castlerock Chevrolet since 2020 one of the best. I appreciate their customer satisfaction. Puts their customers first. My car engine almost destroyed by an oil change of a place I used to get by cheaper but no more. Thank u again.

I paid over $106,000 for this truck with warranty. Do not care much about miles per gal. at that that price range. Just too much truck for me at my age.

We worked with Leon and Aaron(finance), got what we wanted. They were great! Highly recommend. Thank you!

I love my 2021 GMC Denali 2500HD. I have gotten more complements on this truck than any other vehicle that I have owned. I get great highway fuel milage average 19-26mpg,which is great for a heavy duty truck!

After any serving of a vehicle taking it through your car wash before returning to customer. This might encourage more customer loyality. Oil change prices are too expensive. The expertise needed to do that job doesn't equalate to charging that amount.

I took delivery of my 2026 Suburban Z71 (6.2L, custom Borla exhaust, red tintcoat) from John Elway Chevrolet on 23 October 2025, and I can say without hesitation that this was one of the best vehicle purchase experiences I?ve ever had. My journey with this dealership started way back in July 2025, when I first tried to buy a similar vehicle. That original deal didn?t work out, but Trevor (Internet Sales Manager) never dropped the ball. He stayed in touch, helped me custom-build the exact Suburban I wanted, and kept every promise, from the guaranteed price to a very fair-trade value on a challenging trade. Throughout the entire process, Trevor?s communication, communication, communication made all the difference. He kept me updated at every step as the vehicle moved through production and delivery. On delivery day, I met Amanda, who made what could have been an overwhelming tech setup feel effortless. She walked me through every performance and technology feature, connected my OnStar account, synced Apple CarPlay, and ensured I understood all the apps and settings before driving off the lot. Her professionalism and enthusiasm turned the delivery into a great experience. Daniel (F&I Manager) was equally professional, direct and knowledgeable when discussing warranty options, but respectful when I declined. The entire process was efficient, transparent, and team-oriented, which I deeply appreciate as a former military officer who values teamwork and integrity. When I left the dealership, my new Suburban was spotless, fully set up, and ready for a long drive south to Texas. I?ve bought many vehicles in my life, and I usually ask dealers not to put their decal on the back. This time, though, I left the Elway football logo right where it belongs. It?s a reminder of a team that truly earned my trust and my business. I not only recommend this team, would actively seek them out again in the future. Trevor, Amanda, Daniel.....a true pleasure to meet you all and thank you for a great experience. I hope to see you again in the not too distant future.

This truck is everything I wanted! GMC, 4x4, Lifted, Low milage. It's going to be great for my hunting and 4 wheeling! I love it!

I had a great experience buying my truck sight unseen with the help of my salesman Tony he went above and beyond with pictures and videos that I requested that made me comfortable with my purchase it was everything he told me it was and more. He rode the sale all the way to the end and took care of every detail I would definitely recommend him to anyone who was looking at buying a vehicle from him especially if you were not able to be there 👍👍

this truck fits my needs better than the other 2500 models. Its hauling and towing performance along with its many people comforts will satisfy us for a long time to come.

We love the car that we purchased. Our salesperson was easy to work with. We were cash buyers and the finance department handled that well. The only issue is that the car had received a minor repair in the rear fender and during the repair, the dealership failed to reconnect the tail light.

Great power and yet great economy. Love the safety features with the cameras and side vehicle warning. Camera that shows side of vehicle, including trailer when turn signal is on is great. Also appreciate the bed camera for hooking up gooseneck trailer.

I toggled between 4&5 stars and I landed on 5 (which is hard to do with me)and I will tell you why.I started out with BMotors over a month ago looking at one particular 5th wheel and after it had been listed that it had some things that worked it actually didnt but well my son was a used car dealer for many years and this was the reason I asked for it to be checked.I know how things work in used vehicles its not always obvious even to the dealerships. They could have sold me it as it was but they were 100% honest and said they needed to put me in another trailer.This is the most important aspect of a dealership really. You get what they are saying! This new 5th wheel is more then double the price but its more then worth it and I am satisfied with it They did good by me and in house financed me on top of it. Bret was amazing and answered every time I text him a question or concern. When I was ready to haul this giant 5th wheel for the very first time with a truck I just purchased they actually had their service guy (and another employee follow)drive about 6 miles with me to get me out of the city and show me how to make the turns and show me how to use the brake system on the trailer.This is above and beyond!! This Yall is a 5 star Dealership!!! I highly recommend Berkenkotter!! Go see Bret, Alen or Any of the Guys they eill hook you up!

When looking at price point vise equipment, This is your truck. I looked at every 2500/3500 on the market, same vehicle equipment and price. I chose the Duramax.. HP, Torque of this Diesel, truck equipment that the SLT price point had everything that I wanted for safety, appearance and comfort, none other came close. This is your truck...

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

I have owned my truck for a month and two weeks. Two weeks after owning it my power steering went out for about 25 miles then was OK again. Last week the check engine light went on and after about 25 miles it turned off and it was OK a week ago I entered my truck to start off for the day and everything was dead absolutely had no sign of life. The dealership has now had it for exactly a week and they cannot figure out what’s going on. They say they’re having problems receiving communicating. I sure hope I will continue to love my truck. It drives like a dream and pulls like an ox.

Carlos at Super Auto was professional, patient, and easy to work with. He addressed my concerns and showed me several cars without being pushy. I appreciated his approach.

Love my GMC. Owned a Chevy and this absolutely beats it hands down. Never had any issues. Inside is very comfortable and can't imagine driving anything else

Helpful and kind, answered all my questions. Next time I'm shopping for a car, I will come to Luis. It's important for me to have someone I feel listens to what I need.

Lewis was good I love our cars thank you much for the service I appreciate it

Love everything about this Duramax Denali except the fuel mileage. 13-14 Mpg tops when not towing. Bought truck cause previous was stolen. Wish I still had my 6.2 High Country!