Used GMC Sierra 2500 Denali for sale near Suwanee, GA

Ben Clark was very helpful today, He answered all our questions and was very professional as he walked us through all the information we needed to know. Such a great Salesman!!

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.

It seems pertinent to share my point of view regarding them, saying that this a particular dealer has excellent customer service, a dedicated staff, and a fast system to serve 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!

Nice quality cars, the entire inventory is impressive and very extensive, and the customer service people were also very nice with their kind responses

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.

all good except LACK of car wash. you did not meet my expectations in that area.

Blake is a top notch service rep and is extremely courteous and respectful of his clients time. They work quick and efficiently. You can rest assured your vehicle will be repaired quickly and correctly when you work with Blake and his techs.

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.

Hennessy Cadillac is by far the best experience I have had ever in buying a vehicle. This is actually my second Cadillac I have purchased from them and I have nothing but great things to say! From the sales department to service it has been nothing short of amazing. I am not easily impressed but everyone I ever encounter at this dealership handles me with care and respect. Entering a dealership as a single woman could be intimidating but not here! Terrance and management went above and beyond to make sure I leave happy every time. I pay attention to how others are treated and I will say I haven’t seen anyone actually upset even in the service department. The concierge level service of greeting me opening doors all things I expect from Cadillac are given every single time. It is always neat and clean on the premises. And most importantly my deals are fair and respectful. Desmond is usually my service guy and he is absolutely always honest and makes sure I am kept up to date with any thing my truck needs without feeling pressured to buy or upsale anything to me. Even once sending someone to pick up a key for my truck when the other one didn’t work. I went to another dealer recently and found a truck I really liked and test drove that I could have purchased but didn’t because honestly I didn’t get the same concierge service from that Lexus dealership. Hennessy and Terrance made sure all my experiences were top tier. I have owned a lot of cars in my life and have had good and bad experiences on every level but Hennessy has not disappointed me one time. Check them out ask for Terrance in sales and Desmond in service and I promise you won’t be disappointed.

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

Easy, No Haggle Pricing. Fair Blue book value. Free transfer on the car I wanted from out of state. Sales rep was extremely friendly. No gimmicks.

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!

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!

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.

Everything has been good so far.. I love my new ride. Im Just waiting on tag, title, plate etc.. I'll give a full review after that..

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!

From start to finish Kenmanuel made the process hassle free and easy. Amazing customer service.

Kenmanuel was extraordinary salesman he give to us more the 100% customer service. We back home happy with our new vehicle

Manny walked out of that office like a champion, looked me dead in the eye, gave me a straight answer, and got the job DONE. He talked real, worked fast, and didn’t try to upsell me on some garbage I didn’t need. He treated my ride with respect — like it was the xxxx Intercontinental Title on wheels. Customer service? THROUGH THE ROOF. Updates? On time, every time. Paperwork? Clean. Friendly? Like a rattlesnake with manners. So if you want honesty, hard work, and a man that knows what the xxxx he's talkin’ about, you go see Manny Platero. Because if you don’t… you’ll end up payin’ more money to some jabroni who doesn’t know a spark plug from a bottle opener

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.

Just had my 60,000 mi. Service and all went well! They also repaired a rain leak I found after the last storm. I?ve bought several autos from Jim Ellis and always have been pleased with sales and service . Ted and Harley in the Buick service dept .are the best!! I would recommend this dealer.

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.

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 Service- Kenmanuel is best. This is the 2nd time ive worked with him in the last year & I couldnt be any happier!

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.

Benjamin did a great job finding the car for me. He was very direct and helpful.

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

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.