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

I’m not techy, but I trust my gut — and this place felt real. Got the Envision, been loving it. Smooth ride, easy to park. They even called a week later just to check in. That small gesture made a big impression.

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.

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

Didn’t feel like I was just buying a car — it felt like I was dealing with genuinely good people. Now driving a Buick Encore and still glad I chose them.

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.

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.

Tito was a very nice sales person. There was no pressure when we changed our minds on which truck to buy. We are very happy with the deal TJ and Tito gave us. We love the truck that we bought!!

Came in just to browse. Then I sat in a Buick, took it for a spin, and boom — bought it. The vibe was relaxed, the staff wasn’t pushy, and the whole process was easy. No regrets at all.

Stopped in with a friend just to "have a look." Next thing I know, she picked a Buick Encore GX with a red interior I wouldn’t even choose in Sims. The dealership space is super cozy and photogenic. I was lying on a couch while she debated carpet colors.

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!!

Was really anxious about the whole process, especially the paperwork. But the team walked me through it step by step and even helped with my insurance right there. Huge weight off my shoulders.

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!!!

great night tonight at Performance Buick GMC! Brian Gauthier was super-friendly, informative and made the process as painless and efficient as I have ever seen, and his tag-team partner in finance James Gavenas made the finishing touches of signing the final paperwork simple and fast, while clearly explaining all options and everything I was signing. and they gave me a great deal- Brian on the vehicle and James on the protection.