Used GMC cars for sale near Altamonte Springs, FL

Andy was so helpful and made sure I was taken care of he has the best customer service and really looks out for his customers.

Purchased new in October 2024. Total miles driven 9,276. Just completed a 4,734.2 mile trip through 9 states. Just a pleasure to drive. My wife and I were on the road 16 days, with only 8 driving days, longest day was 674 miles. Average driving speed was about 72+ miles per hour. Seat comfort was amazing, no discomfort, great considering having 4 back surgeries. Very solid on the road with little or no driving fatigue. Performance was great. Of the total miles, about 500 were in town driving and 300 miles was in 4x4 in a snow storm coming across Northern Texas in April. Average MPG was 26.4 with my best 500mile drive at 33mpg. The diesel engine is very quiet requiring me to check the tach sometimes to be sure I had pressed the off button. Very quiet on the road as well. This is my first diesel and I would highly recommend it. Plenty of power, great fuel economy, quiet and very responsive when you need that quick acceleration. amazingly nimble for a big SUV. The adaptive cruise works great. My previous GMC was a 2009, 6.2L V8 Yukon XL. I drove that one 140K miles over 14 years with nothing but routine maintenance, a great vehicle as well. Very happy with this 2024

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

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.

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.

The staff was very friendly and helpful. Joe Andrade did an outstanding job helping us find a car and keeping up with everything needed.

Just trade in my 2015 GMC Denali with 140000 miles on it and still holding strong at trade in best SUV I ever had upgraded to the new 2021 Denali and boy do I love this SUV from comfort to outside design just an amazing new well designed SUV.

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

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.

Very good service. The salesperson provided us with excellent service, and the finance representative went above and beyond?overall, very good service We were very pleased

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

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.

Very pleasant salesman. Quick and painless process. Would definitely do business with them again. Got the deal we wanted.

Okay but what is the best way you can do this for with a good price and a nice price for a decent price like this one for like two or five years and a good price for a really good quality one of the ones that I got from the

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

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.

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!

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.

Wished they could update the inventory to reflect more accurately. The car was not available.

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.

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. :)

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! :)

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.

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

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

handles and drives great, the electronics don't always work, mirrors don't always work, spray with wd 40, check engine light, EVAP culprit, auto nation has no luck with this, will drive it till the warrenty expires and its back to ford for me

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.

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

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.

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.

Tony provided excellent customer service. His actively listening to my wants along with his extensive knowledge of the vehicle help him pick out perfect vehicle for me.

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!