New and used 2025 GMC Yukon XL Denali for sale near Secaucus, NJ

Great service! I was very pleased with the service that was provided for my Buick. I have an extended warranty and the service was covered. I also needed an oil change, which was done. I appreciate that my customer service rep. Eric kept me informed of the progress of my vehicle. The part had to be ordered so the vehicle stayed overnight and was ready the next afternoon. Thank you. I appreciate all your help.

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!!

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!!!

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.

Made a difference changing the trans fluid Thank you R. Smith

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

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!!

great communications. Sent the truck in via a tow truck and received notification that the vehicle arrived. From that moment forward I was kept current with communications up to and including that the vehicle was ready for pickup.

The Rockville Centre GMC team did a tremendous job with my vehicle. They were timely and always was in communication with me about my vehicle

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

George Gregory got us into the right car?.the process was painless. George was friendly and professional. This is our third car with SL and we?ll be back for our fourth.

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.

Bought a car for my mom. She’s super picky. While I was checking specs, she was inspecting door handles, buttons, thresholds, and seat softness. She said this Buick is just right for me. Rodrigo patiently answered every question. Showed how everything worked. She made the choice. I just paid and stayed quiet.

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.

This dealer 100% is owed the most positive review ever! I never knew buying a car could be such an enjoyment! Start to finish best time ever! So happy! Thanks to Jaheim during initial phone shopping time, then meeting Moises sales and his manager Scott, who was so great and patient with me, to then getting to pleasure of meeting Jennifer finance manager who not only overcome credit obstacles she also made me feel like family after leaving her. Team you have there is unbelievable!