Service Your Vehicle at Riverhead GMC

Welcome to Riverhead GMC, your premier GMC dealer serving Riverhead, NY, and the surrounding areas. Located on Old Country Road in Riverhead, we are proud to serve as Long Island's top GMC dealer. Our team provides exceptional customer service and makes the car buying process easy and enjoyable every step of the way! At our state-of-the-art dealership in Riverhead, NY, you will find a wide selection of new and used GMC trucks, SUVs, vans, and crossovers. Our inventory includes popular models like the GMC Sierra, GMC Yukon, GMC Terrain, and many more. We provide a knowledgeable sales staff who can help you find the perfect GMC vehicle to fit your needs and budget. GMC Service Center Riverhead GMC's service department features GMC factory-trained technicians who can perform maintenance and repairs on all GMC models. We use only GMC OEM parts to ensure proper fit and function. Our parts department also stocks a wide selection of GMC parts and accessories. Auto Financing Made Easy in Riverhead We offer competitive financing options to help make your dream GMC affordable. Our finance team will work to get you pre-approved for financing before you even step foot in the dealership. Why Choose Riverhead GMC? At Riverhead GMC, we want to be your GMC dealer for life. We serve customers from Riverhead, NY, Manorville, and beyond. Visit us near Medford and Smithtown or browse our inventory online to see what sets us apart. Riverhead GMC stands out from the pack with the following advantages to choosing us near Suffolk County and Shirley: Huge selection of new & used GMC vehicles Exceptional customer service Competitive pricing & financing options GMC factory-trained technicians Genuine GMC parts & accessories Convenient location in Riverhead NY We look forward to serving you and helping you get behind the wheel of the GMC of your dreams. Contact us today to schedule a test drive or service appointment!

The 2026 GMC Sierra 2500 HD is not a lifestyle pickup pretending to work hard, it works hard easily and can tackle large tasks. The Sierra HD lineup is engineered for actual towing, actual payloads, and actual long days where the truck matters for your daily activities. For drivers throughout Riverhead, NY, the Sierra HD lineup brings serious capability, upgraded towing tech, and enough trim choices to range from work truck to luxury. The Sierra HD Starts with One Important Idea: Strength First The backbone of the 2026 GMC Sierra 2500 HD capability story is simple. The Sierra HD is great for buyers who regularly tow equipment trailers, horse trailers, campers, machinery, and more. The lineup ranges from the work-focused Pro trim all the way up to the Denali Ultimate. more Diesel Torque Still Rules the Heavy-Duty World If maximum towing matters, the available 6.6L Duramax® Turbo-Diesel is the engine buyers around Long Island will want to pay attention to. Properly equipped, the 2026 Sierra 2500 HD can tow up to 22,390 lbs., which is enough capacity to move serious trailers. The gas engine options remain strong for buyers who don’t need maximum tow ratings every single day, but the Duramax® continues to be the centerpiece of the lineup for contractors, RV owners, and drivers regularly hauling heavier loads across New York highways. It’s the kind of torque delivery that makes merging feel effortless even when towing something large. Choosing the Right Sierra HD Trim Actually Matters The Sierra HD lineup covers a surprisingly wide range of personalities. The Pro trim is exactly what it sounds like: straightforward, durable, work-focused. Ideal for fleets and job sites. SLE and SLT trims add more daily comfort while keeping the truck fully capable for towing and hauling duties. These are the trims that balance work utility with enough refinement for regular commuting around Riverhead or longer drives across Suffolk County. Then there’s the Denali and Denali Ultimate, which brings premium materials, advanced tech, and refined ride quality.  The AT4 and AT4X take things in another direction, adding off-road suspension tuning, skid plates, and more, for buyers who need capability after the pavement ends. 2500 HD or 3500 HD? That Depends on Your Needs The Sierra 2500 HD is ideal for buyers who tow regularly but still want something manageable for everyday driving. The 3500 HD pushes things further with increased payload capability and the ability to easily haul extremely heavy loads. For many Riverhead-area drivers towing boats, RVs, or equipment trailers, the 2500 HD will already feel massively capable. But buyers running larger commercial trailers or fifth-wheel setups may want to step into the 3500 HD for the added capacity. A Heavy-Duty Truck That Still Works in Everyday Life What makes the Sierra HD lineup compelling is that it doesn’t feel trapped in “work truck only” territory anymore. Yes, it tows enormous loads. Yes, it can handle difficult job site work. But it also offers modern connectivity, comfortable interiors, advanced driver-assistance systems, and enough refinement for long-distance driving around Long Island and beyond. Drivers throughout Riverhead, NY can explore Sierra 2500 HD and 3500 HD inventory, schedule a test drive online, heavy-duty truck service, or discuss commercial truck financing through Riverhead GMC.

The 2026 GMC Terrain doesn’t need to try too hard to impress. It does something more effective. It feels considered. Everything has a place. Everything has a purpose. And after a few minutes behind the wheel, you start to notice how naturally it all fits into your life. The Screen That Earns Its Size The 15-inch infotainment display feels large because it’s useful, not because it’s trying to impress. Navigation is clear, and menus are easy to move through. An 11-inch driver display sits just ahead, giving you the information you need without pulling your focus away from the road. It’s a clean, well-balanced setup that works the way it should from the start. more Read the rest of this entry » Comfort That Starts Strong and Builds Naturally Even in its most accessible form, the Terrain feels properly equipped. Heated front seats and a heated steering wheel are standard, which, on a cold morning, immediately feels like the right decision. Move up through the range, and the character shifts rather than just adding features. The Denali introduces ventilated front seats, heated rear outboard seats, and more. Then there’s the AT4, which takes a different approach entirely with a unique drive mode and a lifted ride height. The Small Details That Make Life Easier Available wireless charging keeps the cabin uncluttered. No cables, no searching, just drop your phone and go. The available AutoSense liftgate adds another layer of ease, opening as you approach when your hands are full. These aren’t headline features. They’re the kind you end up using every day without thinking about them. Space That Adapts Without Compromise A small SUV still needs to behave like a practical one. The Terrain gets that right. The 60/40 split rear seats fold flat when needed, opening up ample cargo space. There’s also smart storage built in. Light, Air, and a Bit More Room to Breathe The available panoramic sunroof changes the feel of the cabin more than you’d expect. It opens the space up, brings in natural light, and makes longer drives feel less confined. It’s something both front and rear passengers benefit from, not just the driver. Right at Home in Riverhead The 2026 GMC Terrain interior works because it understands how people use their vehicles. It blends technology, comfort, and practicality in a way that feels natural rather than forced. For drivers in Riverhead, NY, it’s an SUV that fits into daily life easily, while still offering enough refinement to feel like a step forward. You can explore the lineup in person at Riverhead GMC or schedule a test drive online to see how it feels for yourself.