Used GMC cars for sale near Sycamore, IL

Great experience with this dealership. I will come back again as well as refer my friends and family to this dealership. Sales guy Dan was a big help!

Let me start by saying I have the AT4 model with the Duramax 3.0L diesel. I had a 2024 Elevation with the 5.3L V-8 that I bought to pull my 22’ camper. While the Elevation pulled my camper fine it drank the gas like it was on a binge. And with a 26 gallon gas tank it seemed I was filling up every couple of hours. After one trip to Nova Scotia I knew something had to change. I pulled my camper out west to Yellowstone and back through Arizona. It pulled like a champ and fillups were a lot more manageable. Even driving the speed limit out west I still got four to five mpg better than with the gasser. I liked the Elevation but I love the AT4. Way nicer ride and great handling. I get 30 per gallon of diesel on the highway if I drive the speed limit but I got it to tow with. I added a Titian replacement fuel tank so I have 43 gallons instead of the 26 it came with.

Great staff and very good deals on new vehicles. Quick, friendly and very helpful. I would recommend if your looking for a great deal check with these guys first. They will get you that Great deal others can't.

Very nice dealership, kind courtesy, and knowledgeable people. Fair offers and good inventory, definitely willing to bend over backwards to earn your business. I would recommend.

My sales person at Castle Chevrolet was Tony Twall. He was awesome to work with. He answered all my questions and was very knowledgeable. I have to say that this was the best vehicle buying experience I have ever had. My next purchase will be with the Castle dealership in McHenry IL and I will ask for Tony to be my sales person.

This truck has a jerk when changing gears sometimes. I enjoy the truck overall easy to handle and comfortable. Drive with ease sight is good when driving.

Very professional and pleasant people I dealt with in my purchase and service work of my vehicle. Would not hesitate to buy another vehicle or have them perform service work.

Great truck to own. The 2023 GMC Sierra Denali with the 6.2L engine delivers excellent power, smooth performance, and a refined driving experience. The ride quality, interior comfort, and overall build quality are outstanding. I have had no issues whatsoever, and it has been a reliable, enjoyable vehicle from day one. I would highly recommend it to anyone looking for a premium full-size truck.

Good dealership with much inventory. And the salesman was very helpful. He helped me finding exactly the car that I wanted. The salesman is named Ivalin Nikolov.

I bought this after going to the dealer just to look at colors. I had a 2016 Chevy 1500 LTZ that I loved. There was my down payment and took this Denali home. Only 2 options. Paint and moonroof. I thought my chevy with 3.42 gears was quick. This one goes with 3.23's. The ride is great. Fit and finish are perfect. My only complaint is this Bose/Apple play radio is not what the 2016 Bose was.

Overall very good. Everyone was very friendly. Don’t like the games at times. All worked out well.

Overall I am very happy with my new Truck. GMC however needs to address their software glitch where the display screen intermittently stops working or the audio cuts in and out. I keep hearing a software update is being worked on but that was a while ago?

I needed a new vehicle and had decided to upgrade from my previous cars. A Cadillac was on my short list, so we started with Napleton Cadillac in Rockford. As we were looking at the cars, we were greeted by Alex, who brought us into the showroom to chat so he could find out more about us and what we were looking for. We took a beautiful new XT5 out for a test drive, and then went back in to chat more and get more information. I told Alex that I was just beginning my search, and he very nicely asked if he could give me a card, which of course, I took. Over the weekend he emailed me to explain current offers and rebates. After looking at a few other brands, I decided on an XT5, so we went in the following week to further discuss a purchase and look at a few new and preowned cars. Alex took the time to explain the specs on each one, making sure that I understood what each car had to offer. He wanted to make sure that I would be happy with the model I chose. Buying a car is a long process, but the Napleton showroom is very comfortable, and the fresh coffee and snacks kept us going! By the time we finished with the purchase, night had fallen and I wasn't comfortable driving a new car in the dark. Alex offered to have it delivered the next day. My beautiful new XT5 arrived the next morning at the appointed hour, freshly washed and detailed. Alex stayed to help us set up our Onstar service and get acquainted with my car. The overall service was simply impeccable. From the beginning to the end, I never felt any pressure, and everyone at Napleton made us feel very important and welcome. I am very happy that I chose to shop locally and that I chose this dealership. I want to thank Alex for making the whole process easy and pleasant. Five Stars!

I own a 2023 Sierra 1500 Elevation equipped with the 2.7L TurboMax, and it’s been outstanding. It currently has 23,000 flawless miles. I’ll admit, I was skeptical of the 2.7 at first, but I jumped in feet-first and have never looked back. Living in Colorado, I regularly tow a 5,000-pound travel trailer through the Rockies with zero performance issues. The truck pulls confidently, handles grades with ease, and still delivers impressive fuel economy—23–24 mpg on the highway and about 18 mpg in town. I couldn’t be happier with this setup. If there is a negative to mention, that would be that after three years of ownership, the black wheels havent grown on me, and Im beginning to hate em. :) Lastly, the mpg while towing drops to 9mpg which is similar to that of a V8. All said, its been a great truck. :)

Check engine light came on Saturday afternoon and I was able to schedule an online appointment for 11am on Monday. Diagnosed a loose cable and was back on the road in less than two hours.

Good afternoon everyone, yes, I’m a lady and I’m an owner of a 2017 GMC Sierra 1500 Denali, it has a V8 motor fully loaded sunroof & also it has heated seats & steering wheel for the cold winter months & in those hot summer months you have A/C seats nothing better than that am I correct? It’s been times like that wouldnt trade for the world!! So for all you ladies who think BIG TRUCKS are just for men, go out there & buy one have them put on some electronic slide in/out rails & go out & show the shows the boss!! lol 😄 I’m out looking for a new one now either a 2500/3500 pearl white

Best finance manager in site help with a lot with my purchase!! The best will shop again at this dealership!!

Any reviews on this vehicle is not correct. We are first owners and it’s been an excellent truck. We hate to see it go !

Great people to help in getting the car I wanted. The service to make things happen that insured trust and honesty was greatly appreciated. Thank You.

My 2022 GMC Sierra 3.0 Duramax pickup truck is a good truck. I work on a farm and I also drive an hour to see my girlfriend. For the farm, it has excellent towing capability and for the hour long drive to go see my girlfriend, depending on the weather for traveling, I can get up to 35 miles to the gallon!

I have brought my vehicle in for every oil change I have needed. Always courteous and professional, my car gets a diagnostic check every time and is freshly washed. I like that the Service Department send out coupons, and making an appointment is easy online or with a phone call.

We had an incredibly smooth and pleasant experience at this dealership from beginning to end. The entire process was seamless from start to finish. Every staff member we interacted with was helpful, courteous and professional. Buying a vehicle from Seann Omara was particularly wonderful— he is knowledgeable, helpful, and genuinely committed to making sure we got the best deal possible. We left very pleased and would happily recommend Napleton Buick GMC to others!

The Yukon checked all of my needs, I have plenty of room for my children and my Great Danes. I enjoy driving the Yukon and how it handles, overall love this vehicle!

Daniel and Jovita are great at their job. Attentive and kind. They know their stuff.

This truck is the definition of mans best friend truly so enjoyable to drive and perfect for the family . My kids and their friends think I’m the coolest dad when I pick them up in this beast

It was a great experience. No pressure. Explained the process well. Nice people. Clean facility. Listened to our likes and dislikes. Took the time to explain the cars features and helped us set them up. Offered to help with any issues after purchase was made.

Waiting for the Refreshed 2022 AT4 was well worth it! With all the manufacturing issues today, building and shipping was slow, but understandable. Love the truck and the features! Fit is perfect and quality is #1. Pricing was too high but all vehicles are running this way. You get what you pay for and this truck is perfect! I have owned many trucks and this by far is the best. The latest features are beyond most other makes and GM has thought this truck through from front to rear.

Frank was friendly and helpful. He look up my records to make sure I was not receiving and paying for unnecessary service. He provided a coupon.

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.

We have owned our GMC Sierra 1500 for approximately 9 years now. The only real disappointment with the vehicle is that we had to have a full transmission replacement Just after the 100k mile without any warning whatsoever. The truck now has 107k miles on it and now , again out of nowhere, we are experiencing slipping in the trans and the engine light is now flashing. Very disappointing since we are starting to feel uncertain about the reliability of the vehicle now. The truck itself is gorgeous and shows ZERO signs of its age, sporting new rims and tires and a lifted body and no rust on the body at all. We hope there are no major issues with the engine as the vehicle has always been maintained as needed and on time for regular servicing at the dealership.

Fast service. Ramy helped me find the right car within my budget. I’m very satisfied and definitely recommend this place.

I really like my nw, to me, 2015 GMC Sierra Denali. The salesman, Terrance Lin was very efficient, helpful and courteous. Thank you very much.

Great experience in the service department. Efficient and personable! Communication was on point from start to finish.

I love it the look the interior mine is a red one and it looks so good and it’s my baby and it runs so good and the technology is off the chain