New and used 2026 GMC Sierra 3500 trucks for sale near Kettering, MD

Excellent as expressed. Mr. Donovan was my advisor and he conducted himself in a manner that was extremely impressive. He was extremely knowledgeable and professional. He is a front man for this company and he represented himself very well. I appreciate this type service and will continue to return and will share my experience with colleagues.

Kacey B is a fantastic Service Rep !!…No!, the BEST Service rep of my 48 years of buying GM automobiles, and One of the main reasons we like Koons! Parts Dept. and Frank also great to deal with!! And when I need both- fantastic team !! Service is always timely, job is done correctly. Nothing but kudos for this team !! A+

Scott was awesome to work with. Very knowledgable and help full without being pushy. The dealership had a great selection of SUV's, so we had plenty to choose from and we are very happy with our selection as well as the whole process from sales to finance. All a great experience and that doesn't seem to happy often anymore.

I do not have a review. your finance person was interested in giving us a higher interest rate. may be they make more money as such

The new car manager did not beat around the bush. He gave me clean fax finance payments interest rates. It was no xxxxxxxx when you went to see this dealership is all about business and friendship.

Javon, was excellent, he listened to everything that I wanted and was able to identify what was important to me and was able place me in a vehicle that met all my needs.

Friendly & exclent service, The service advisor was great and knowledgeable.time wise was right under the 1.5 as the told me upon arrival to the dealer.

This was hands down the best car-buying experience I’ve had in all my years. I’ve purchased vehicles from Mercedes, BMW, Acura, Jeep — you name it — and none of them came close to the level of professionalism, honesty, and hospitality I received at Koons GMC in Vienna, VA. The deal they offered was so incredible that I traveled all the way from New Jersey by Amtrak to Virginia. I’ll admit, I was skeptical at first because many dealerships pull bait-and-switch tactics. But not here. Saleam (Sales), Sait (Sales Manager), and Isabella (Finance) all confirmed the deal ahead of time and honored exactly what was promised. When I arrived just after opening at 9 AM, Sales was still in a meeting, but I was greeted respectfully right at the door. Saleam was paged, and the process began immediately. She welcomed me warmly, gave me a brief tour of the dealership—including the much-needed coffee lounge—and handled all the paperwork, insurance details, and my Costco rebate flawlessly. Sales Manager Sait was exceptional. He thanked me personally for my business — something I’ve never experienced from a sales manager at any dealership in the past. He even told me to call him anytime if I had questions or concerns. That level of care is rare. My experience was elevated even further by Finance Manager Isabella. Her energy was absolutely to the moon. She helped close the best deal I could find anywhere in the NY/NJ/CT tri-state area and the entire DMV region. She offered an unbeatable protection package at a discount, covering dents and mileage, and explained everything clearly and thoroughly. She also respected my time, wrapping up the paperwork quickly since she knew I had a four-hour trip back home. I cannot recommend this dealership enough. If you’re reading this review, do yourself a favor and consider Koons GMC in Vienna. I would happily send any of my friends, family, or colleagues here. They’ve earned a lifelong customer.

Atmosphere was pleasant and all of the personnel was kind and professional. Especially my salesman Earl Jones He made the whole process so easy. The other salesmen were very kind also. Koons is the way to go when buying a vehicle.