New and used 2025 GMC Terrain SUVs for sale near Union, NJ

Stefanne Rivera was very professional and worked with me to get my car handed over AAA towing even though I was not able to get to dealer. She understood my condition and was very understanding. She and is a valuable asset to the company.

Being a customer of Greenbrook GMC as a pleasant and rewarding experience. My sales team member Mike Santucci was awesome in every way and made the buying process smooth. All management was professional and supportive answering questions and making sure delivery was professionally done on time. I bought again at Greenbrook GMC because their service team and parts team are incredibly responsive and helpful with consistent exceptional service.

The best dealership I’ve ever dealt with. The service department is outstanding. Appointments are easy to get and the repairs are always done quickly and completely

Thank you so much!! GMC of MahWah!! Knowledge and helpful service, If anyone looking for a car and great deal just go to them and you won’t be disappointed, Shoutout to my SALESMAN!! GERALD PASCUCCI.. He’s the BEST and he will explain everything you need to know and will make your dreams car happen!!

Bluetooth/wifi issue....hardware replaced in a timely manner i hope it works....too much technology

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!!!

Tito Palmela and TJ are awesome to work with. Tito worked to find me the perfect Yukon for my budget and needs. I LOVE IT!!!! These two are really there to help and both have checked in to make sure i was fully satisfied. Thanks so much guys! Highly recommend Green Brook GMC. Jennifer G.

Great experience purchasing a new Buick Encore GX from a great team. Hugh Middleton was great to work with and he was patient as he explained the process and the numbers and he and his management were great at crafting a deal that was extremely reasonable and the process was smooth and efficient and I was in and out of the dealership in what for me was record time. Definitely the best car purchase experience I've had. If I need to purchase another vehicle I would definitely work with Hugh and his team again. I can't recommend them more highly!!!

I just purchased a Buick Encore from Buick GMC of Mahwah and I am thrilled all around. Gerald was patient, knowledgeable and so helpful. Jennifer, the business manager went out of her way to assist me through the buying process. The staff were all great and most importantly, I LOVE my new car!! Thanks for such a great experience.

Straightforward and no nonsense. The manager explained everything in plain terms. You could tell they care about doing right by the customer. I drove away feeling confident in my purchase.

I was just tagging along with a friend, but ended up falling for the Enclave. Comfy, roomy, and the place had this quiet, relaxed vibe. Even made myself a coffee while deciding. Might be time to retire the old car.

Nothing flashy, just solid and honest. Prices matched online listings, no weird add-ons. Took an Envision out for a test drive 15 minutes after walking in. They don’t act like sales pros, just real people helping out.

Got my Sierra here. Quiet, no pushy talk, no showroom theatrics. Just walked through the details, got offered coffee, and signed. I liked that they let the car speak for itself.

Drove in from Connecticut for the Encore trim I wanted. It was actually there — not just online fluff. They had all the paperwork ready and even got the inspection done fast. Glad I made the trip.