New and used 2025 GMC Terrain SUVs for sale near Glen Cove, NY

Great dealership to work with. I had the pleasure of dealing with Zeeshan, Willie and Akbar and I have to say it was the best interaction I had in any car sales. They were professional, courteous and actually cared about what we wanted. Most importantly, they were honest. Communication was too notch and I was updated every step of the way by text or call. They went out of their way to make sure we had the best sales experience from beginning to end. The car itself is beautiful and they didn't cut any corners in the sale. I wouldn't hesitate to recommend them to any one and when I'm in the market again will definitely be a return customer.

Stopped by just to see the Encore GX, and ended up checking out a Terrain, a Sierra, and even a few Jeeps and BMWs. Being able to compare that many options side by side at one dealership? That’s a win. The fresh Sierra with the Pre-Certified package especially stood out.

Everything was dialed in from the start. I was greeted right away, shown exactly what I came to see, and given time to explore without hovering. The team clearly knows what they’re doing—paperwork was quick, smooth, and painless.

Marilyn has awesome product knowledge found exactly what I was looking for. My experience was a smooth no pressure transaction.

Clean, modern, relaxed. Even if you’re just browsing, nobody’s hovering or trying to close a deal. Great selection, and the manager handed me a few keys to explore on my own. Zero stress, just a good experience.

If you want to be treated like a person—not like a loan number—this is the place. They helped me trade in my car, gave me a fair price, and explained everything without the usual runaround. The car was exactly as described. You don’t find places like this often.

I double-checked Yukon prices online, expecting them to shift once I showed up—but nope. The number I saw on the site was the exact one on the final contract. Fees were minimal and fully transparent. It’s rare when things actually match up like that.

I highly recommend the entire team! Petar was very responsive right from the initial call. He put the vehicle on hold for me 2 days ahead knowing that I was driving 5 hours from Maine to drive and potentially buy. When I arrived, it was fully detailed and sitting right up front. There was a mechanical issue that my husband found. Lloyd entered the picture. Lloyd immediately drove it down to the service department, they diagnosed and fixed immediately. It took a couple of hours....but the guys gave us a recommendation for pizza and bought our lunch. Gene jumped in on the tech side and got me all set with the app and answered all of my questions. Ashley in finance was also really helpful and got our paperwork done quickly!! Overall 7 out of 5 rating! Everyone worked well together, treated us VERY well, were honest and most importantly, authentic. Call Petar and team for your next car!!!

if you go to this place ask for Oz... an absolute gentleman, and great salesrep ... very rare you find a man like that in the industry... overall 10/10 experience... never even asked me to write a review but my experience was too smooth not too

I had a great experience at Generation Buick GMC with Joe Rossetti. He met all my needs, I will be recommending all of my friends.

Great service from Zach. Very knowledgeable and thorough. Will definitely recommend him and Generation Buick GMC to my friends and family.

Wow what a complete difference in professional service from Generation GMC in Sayville compared from King O'Rourke in Smithtown. Service department is amazing. They send you a video from the mechanic going over all the concerns that you have any what they found. I was constantly being told my oul leak was a seel. Thanks to Generation GMC they took the time to find the real cause and it's going to take a week to fix. Thank God had the issues at King O'Rourke otherwise I wouldn't have found an amazing dealership. Especially Thanks to Maria for keeping me updated.

I made a last minute appointment and was accommodated in a timely fashion. The service was excellent. I wax just in there for an oil change and a tire rotation and it was cheaper at the dealer then on the outside.