Used GMC Sierra 2500 Denali for sale near North Decatur, GA

Was in town for my sons lacrosse tournament when our 2022 Equinox broke down. Limped it over to your dealership at 7:30 in the morning to hopefully get an idea what was wrong. I was not expecting any miracles especially without a appointment as a matter of fact I figured I would be stuck there a few days until they could get to it. GET THIS...Bryon Steinke(employee of the month) greeted me and listened to my problem even though he was backed up with customers as far as the eye could see. Took my car and said lets see what we can do. Had me out of there in less than an hour, WAIT...it gets better. He called me Monday morning to see if me and my family got home safely!!!! Who is this guy and where did you find him because there is nobody in customer service like him any more!!! Can't say "thank you" enough times for what he did for us, that is a great employee you have there and you are a great dealership!!

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.

Kim Nichols rocks, and Sean is also excellent. I ternrt ad, we have emailed and spoken, but not too much!!! Waiting to hear if I'll be able to upgrade. They str excellent sp far!

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.

Recently purchased a SUV for daughter Baker and Keanen delivered the vehicle and completed all of the paperwork. The delivery was smooth and their dedication to us and the sales was commendable. I do highly recommend.

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.

very happy with financing which put me in a new car. great service plan and CVT engine is fun to drive with 30 miles plus gas mileage. car handles well over the speed bumps. very roomy compared to sedan. Insurance cost went down. very economical.

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.

Reggie was the best! Thank you for everything. Would defend recommend that you ask for him to assist with your purchase.

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!

This was the easiest car buying experience I have had. They took me to the car I was interested in. Keys were there, we drove it right away. The price was competitive, the financing was lightning quick. They washed it while I was signing and I was out of there in under an hour. They even drove me to turn in my rental car so I could just drive my new car home and surprise the family. First class business.

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

Recently purchased a vehicle with Alex. Definitely recommend him to everyone. He is professional and would find the dream car for you. Will find him again for future purchase.

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.

The service is good. You will find what you need and what you want with them.

My experience was excellent with Ted. The videos from the technician ere very informative. My son-in-law had a previous car worked on here and also purchased a new one from Ellis GMC.

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!

About two weeks ago, I found a Lexus RC 350 at CarGurus and I stopped by for some window shopping and ran into Lou, who was helping another customer at the time. Even though the showroom was busy, He took the time to greet me and reassured me that someone would be with me shortly. That simple gesture really stood out and made me feel valued, even before I made a decision. After doing my research, I decided to return to ALM Marietta, and I'm so glad I did! I had the pleasure of working with Lou again, and I also had the chance to meet some fantastic folks in both the management and finance team.

As a proud Cuban woman who values honesty, respect, and family-like service, I have to say—working with Manny Platero was an absolute pleasure. From the moment I arrived at Rick Hendrick Chevrolet of Buford, he treated me not just like a customer, but like family. Let me tell you, sometimes as a Latina, especially with a bit of an accent, you worry you won’t be taken seriously or that people will try to take advantage. But not with Manny. He listened to me carefully, explained everything clearly (even the things I didn’t understand about the car), and most importantly—he made me feel respected. What I appreciated most was his patience and the way he took the time to walk me through each service step. He wasn’t trying to push unnecessary work or confuse me with technical words. He was genuine, kind, and very professional. It reminded me of how we take care of people back home—with warmth, but also with integrity. Gracias, Manny, for making this Cuban woman feel seen, heard, and well taken care of. You’ve earned a customer for life—and I’ll be sending my whole family your way. Con cariño, María G.

This is the first diesel I have owned. The power is amazing and I really like the room inside the cab. This truck is a beast... Love it!

Jesus Flores was a great and caring individual that helped me and my son with our purchase and made it so easy.

I love my Denali. Beautiful truck inside out. When I drive down the road all heads turn. I couldn't have made a better choice. That's Cortez for you good service.

Compre mi Nueva AT4 y me ayudo kenmanuel el proceso fue rapido, buen servicio y calidad

I worked with Brett and Daniel. They both were extremely helpful and informative. Although I did not end up purchasing a vehicle here, they were professional and genuinely wanted to help me find what was best for me. Highly recommend this dealership.

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.

Very pleased with service I received. It honest, helpful and answered my question and concerns. Greg was able to satisfy what I needed and I would recommend purchasing a car from this dealership.

Damien Brown was super helpful on the phone and even more so in person. This dealership has a huge inventory and he was very knowledgeable about all of the different cars available. There were no pushy sales tactics, and I never felt pressured. I would absolutely seek him out again if I were in the market to buy another vehicle.

I came from Columbia SC to look at a Jeep Sahara I saw online. Greg greeted us at the door and got us into a test drive and then purchasing the vehicle without any issues. He was friendly, efficient, and made my car buying experience a breeze. I would recommend ALM Marietta to friends and family, and ask for Greg!!!

Truck was bought specifically to our travel trailer. We have to wait for 1000 break in before we can tow the trailer. So far the truck is very quiet, smooth running, & comfortable to drive. We were pleasantly surprised at how much interior storage space is available. Having the bed steps before rear tires and in the bumper sides is very nice. Bed rails are even with my shoulders so the steps get used a lot.

Great experience. Beautiful dealership location. From the saler to the finance person everyone was very professional. Would buy again from this dealership. Really enjoyed the experience.

I came in expecting just another long, boring dealership visit while they looked at my SUV. You know the drill—sit, wait, pretend to understand what a “cabin filter” does. But then I met Manny Platero, and let’s just say... the day took a pleasant turn. He was professional, of course. Polite. Calm. But there was something in the way he spoke—confident, reassuring, like he had everything under control. And let’s be honest, that kind of energy is rare these days. He walked me through the service clearly and never made me feel rushed or talked down to. I appreciated that. Honestly? It was the first time in a while I felt... heard. My car came out running better than ever—and I left with a little smile. Not just because the work was done well (it was), but because sometimes, the right kind of attention from the right kind of man can make all the difference. Thank you, Manny. Five stars. And maybe a quiet little thank-you smile, just between us.