Used GMC cars for sale near Altamonte Springs, FL

Excellent service. Paul was really good explaining everything happening with the car. I like the recommendation of care that I have to have done to the car.

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 experience from start to finish. Showed me exactly what I asked for without tacking on a bunch of extras before showing me final price.

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!

We came in from out of town, the car was accurate as far as the listing, cosmetics a little worse but we got a good deal, thanks Sean

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 !

Excellent dealership with great people working there. I would like to give a special mention to Bryan Olivares. Bryan is a great guy, I was going to make my way to the dealership to get my new car but had no way of getting there other than waiting in prime time for a taxi. He called me and said he would come and pick me up, no problem. That's what I call great customer service and looking after your customers, as he did not have to do that. He also sorted out the registration and the licensing for me on the car. I appreciate that and the service I received. Also a mention for Dennis, I believe he is one the the managers and Alex in the service department. I would recommend this dealership to anyone. Thank you all and thank you Brian.

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.

I’ve met many salespeople, but Ali stands in a category of his own. He doesn’t just sell cars—he creates trust. From the moment I walked in, Ali paid full attention to what I needed, offered honest guidance, and delivered an experience that felt personal rather than transactional. His professionalism, calm energy, and deep product knowledge made everything effortless. If you want not just a car, but a smooth, confident buying journey, ask for Ali. He’s the reason I’ll return—and the reason I’ll recommend this dealership to everyone I know

Keven was great to work with and his team made success of a difficult situation. I give my appreciation to RC Hill and Keven for their love in trying to help in finalizing a successful transaction. Thank You.

Had my 2023 gladiator serviced in December 2025, Nash was my advisor and he did an excellent job. Highly recommended this dealership.

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

10/10 recommend! Zee, Doug and Beth killed it. They helped both my mom and I get the exact cars we wanted. Thank you to all for the best experience. See you next time for our new leases! :)

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.

EXCEPTIONAL Customer service!! I explained my concerns, they understood what I was saying and fixed everything! even what I had not mentioned. AND they only had I car for 1 day! Previously took to another dealer who had my car for 5 days and did what?? not sure cause still had issues when I drove off their lot. I will be back even if I have to drive 20 miles their level of great service is worth it! I have recommended Orange Buick to friends.

Nice styling,interior has a new design dash which is beautiful and convenient,safety features and cameras are great and easy to used and the active cruise is awesome.

Tom, in service, is very thorough. His team along with Mac and the parts department always go above and beyond to take care of my needs.

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.

Dejuan was very knowledgeable and professional when he sold me my new car. I'm very satisfied.

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.

Brian did a great job. Very easy to work with. I will definitely buy from Mullinax again

2021 GMC sierra 1500, 5.3, crew cab 4x4, 21000 miles. brakepad monitor lites up. dealership says needs brakes and rotors in back. one mo. on warranty. our rural roads dirty up the monitor. Needs new monitor. brakes look great to me. No noises. dealer says parts on order GM strike. Can't replace myself cause of computer...

Enjoyed meeting Roberto our sales representative. Professional and made the process easy. The dealership was responsive to my questions and needs, Took a kit if tune ti cinokete the purchase.

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. :)

Started off my vehicle search at Mullinax Ford and visited 5 other Ford Dealers over a 4 day period. After the search was over, Mullinax Ford had the best deal for my new vehicle, the best deal on my trade in, best customer service and best selection to choose from. The entire team at Mullinax Ford was awesome to work with and didn’t play games like some of the others. Great Experience….Thank You!

Everything went great, I went in for an oil change and they found I had a more serious problem. My car is now back at 100%. I deducted one star because the car was not cleaned as well as it has been in the past after a service.

I have enjoyed my vehicle. It is comfortable and drives very well. I like the color also. It is very roomy, takes off fast and the safety features are very beneficial.

It was a wonderful experience, from the sales associate to the finance Dept, it was very quick once all the paperwork was in. I love my new car

Am in disbelief every week at the Gas Pumps. Thou a big truck, mileage per gallons are 18 +. Last week it was 22.8. This week 19.78.

A great experience overall. Everything was streamlined and run very well. High level of courtesy given to make us feel welcomed and valued

We drove two states over to McKenzie Buick GMC in Milton, FL to meet with Nick and make a purchase on our new Yukon Denali. Customer service was top notch. We were going for their 2019 Yukon Denali to replace a 2008 Tahoe LTZ. We are very pleased with the vehicle. The upgrades are wonderful. Love the cooling seats, the wifi, the HUD and even days after our purchase they have reached out to check on how we were and mailed us a small gift that meant so much. We will definitely use them again if they ever have what we’re looking for on a future purchase. - Brandon Howell 2019 Yukon Denali

Drew Koba in the Parts Department is such an asset to the company. I have used him for years and would recommend him and this dealership to anyone. He is personable and extremely professional. It is almost as though you think you are talking to your long-lost friend. As a business, he is the type of employee you want. He keeps me, and I am sure others, coming back again and again.

Stong engine and smooth! Highly recommend for familys or someone who likes a smooth truck. Purchased new and have had zero issues since then. Love it!

Drew in parts is very helpful and knowledgeable. I got the right parts to fit my car on the first trip.Will definitely recommend him to everyone

Got the duramax diesel and getting 24 city and 32 highway is very good. Truck drives nice and is very comfortable. My 2 issues with this truck is the backup camera at night is useless (very dark) and interior lighting is not very good. You would have thought a 78k truck would have footwell lights, but it doesn’t.

Julio Becerra is the most thoughtful and knowledgeable salesperson I've dealt when buying a car. No tricks, no surprises. He said what he meant and meant what he said. And a heck of a nice guy! Would absolutely buy from here again.

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?