New and used 2025 GMC Sierra 1500 SLT trucks for sale near Manhasset Hills, NY

Austin Rizzotti was very professional and made the purchase of our new auto a real pleasure. He never pressured us to make a sale. The experience was different from any other car buying we have had.

I have the 1500 double cab with standard bed. The reason I have this vehicle is I really like the 6.5 foot bed. The crew cab with same bed is just too long. The things I dislike about this model is that it only comes in the SLE model. For the 2025 that means the external mirrors do NOT have a power fold in and it does not have a seat memory for more that one driver. The power fold in for the mirrors is extremely important to me.

Excellent service. Ask for Delano Ashmeade. Smoothest and easiest transaction you'll ever experience. A1

Very good service I was taken on time & kept informed on the progress of the repairs. It was quick & easy. I will not hesitate to use them again

I recently purchased a used vehicle from Petar Ardeljan and it was a pleasure. This dealership operates differently from most as they encompass a no pressure environment and are transparent throughout the process. I would definitely recommend.

Very helpful service from Petar and extreme transparency very truthful and genuine 👏 looking forward to purchasing from this dealership

Bought a Buick Envision Avenir here last year—best value for the money. Suspension feels like you’re floating, especially on I-95. They gifted me rear window tint and embroidered mats—not even in the configurator. Just a nice surprise from the manager.

Fast and prompt service. Kept me informed of repair progress and very professional and friendly. Would recommend to all. Services completed as promised in one day.

The dealer was great. But the apple play in my 2024 Sierra is not yet supported. What the xxxx is that about? How the heck can you sell an incomplete vehicle? I?d like to know when it will be fixed. And it better be soon.

Sean my service provider was excellent and insured my interaction with the service department went smoothly.

John McCoy was a great salesman! He was honest, communicated well, and applied no pressure to make a decision. This dealership was the only one on Long Island that was willing to negotiate a deal on the car I purchased. Every other dealer said that they could not lower the price of the car even $1. This is the third vehicle that I purchased or leased from this dealership and I will return when I am ready for my next vehicle.

Great deal. No gimmicks or nonsense. Thanks Sean for making it such a smooth transaction. When it?s time to for another purchase I will certainly be back.

Buying my Buick was a great experience, they give you time to breath while looking around then approach for help and answer questions! Service area is alway great, always work with you to get the appointment you need! Will be leasing my next car from them for sure!!

Got the Sierra 1500 AT4 because I wanted something with power—and this thing is a beast. The exhaust note never gets old. What impressed me was the five-day trade-in price lock. I needed time to talk with my brother, and they honored it. Even threw in a factory bedliner.

I highly recommend Rockville Centre GMC Service. I own my 2017 Acadia and over the last several months I needed repairs or replacements made to several high ticketed parts. I felt comfortable dealing with Stanley the Service Advisor and Keith the Service Manager. They were both polite and professional. They took the time to explain each necessary job to me and I was satisfied with the work performed.