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If you set the 2025 GMC Sierra 1500 a task, then it's going to excel at it. It has brute strength, fantastic modern technology, and a range of engines that let you find the right one for you. Both its towing and payload capacities are also great, with the towing capacity in particular beating out some close competitors. Tows Better Than Competitors The Sierra 1500 can be configured in a lot of different ways. The towing capacity varies depending on the configuration you buy. However, its strongest configuration, towing 13,200 pounds, is hard to beat strength-wise. It out-tows many of its closest competitors. If you want that top towing capacity, then make sure you get a Double Cab model with 2WD, 20-inch wheels, the Max Trailering Package, and the available diesel engine. It Can Carry Your Cargo With a maximum payload capacity of 2,530 pounds, the GMC Sierra 1500 is also highly capable of getting a lot of equipment from place to place in the truck bed. The maximum payload capacity does vary based on the truck's configuration, so make sure you're careful and ask questions while deciding what model you want. If you're only interested in the base model, for example, you'll be getting a truck with a maximum towing capacity of 2,204 pounds. It Can Make Sure You're Comfortable If you plan on spending long hours driving your Sierra 1500, then you may want to consider equipping some of the great comfort options, including a 10-way power-adjustable driver's seat. This replaces a 4-way manually adjustable seat, allowing for more precise control over how your seat is positioned. There are lots of other upgrades you might like, including a memory function to save your favorite seat position, a heated steering wheel, and heated seats. It Can Help You Stay Safer The Sierra 1500 has a lot of driver assistance technology, including available Super Cruise, which lets you let go of the wheel on certain roads. The truck's standard driver assistance and safety features include a rear vision camera, an HD surround vision camera, forward collision alert, automatic emergency braking, and lane keep assist. There are several additional driver assistance features and camera views that you can get. If you plan on towing a lot or traveling with a full bed, then the bed view, hitch view, and auxiliary trailer camera might be of interest to you. It Can Give You the Best Engine for You There are four engine options you can consider finding the right one for your needs and desires. There's a 3-liter Duramax turbodiesel, a 6.2-liter EcoTec 3 V8, and a 5.3-liter EcoTec3 V8. The truck's standard engine is a 2.7-liter four-cylinder TurboMax. Come to Vachon Buick GMC in Old Saybrook, CT, for a great experience test-driving the Sierra 1500. We open at 9 AM six days a week.

Shopping for a powerful truck that knows no limits. You'll love everything about the new 2025 GMC Sierra HD. This truck has a commanding presence both on and off the road and all the features and amenities you need for a comfortable, luxurious, and enjoyable driving experience. Whether you plan to use this truck for work, play, or both, you can count on one thing: its power and capabilities won't disappoint. 1. Engine Power and Performance The new GMC Sierra HD is a heavy-duty pickup truck with impressive power. Drivers will have different engine options based on the model they choose, including the 6.6L Turbo-Diesel V8 engine with an Allison 10-speed automatic transmission, which comes standard on the Denali Ultimate and is an available option on the PRO, SLE, SLT, AT4, Denali, and AT4X models. There's also a 6.6L V8 gas engine with an Allison 10-speed automatic transmission that comes standard on the base model. The turbo diesel engine has 975 pound-feet of torque and 470 hp and the 3500 model has a max towing capacity of up to 36,000 pounds while the 2500 crew cab model has a max towing capacity of 21,870 pounds. 2. The Versatile and Customizable trims Drivers interested in purchasing the Sierra HD truck will have plenty of options to choose from, including the 2500 and 3500 models. It's available on the following trims: the PRO, SLE, the SLT, AT4, the Denali, the AT4X, and the Denali Ultimate. The Denali Ultimate is the highest trim with the most amenities and features. It has all the Denali standard features plus additional amenities like a 12-speaker Bose premium series surround sound system, illuminated power steps, an exclusive Alpine Umber interior, full grain leather seating, 16-way power front seats with massage capabilities, and the signature Vader Chrome front grille. 3. The Interior Details and Tech Features If you're looking for a truck that combines luxury with power, you'll love everything about the new Sierra HD lineup. The Sierra HD has available best-in-class 16-way power front seats and is outfitted with luxurious details and high-quality materials like full-grain leather and open-pore wood. It also has the latest tech features including a 15-inch diagonal multicolor head-up display, a 13.4-inch diagonal center touchscreen, and a 12.3-inch diagonal color driver information center. The new GMC Sierra HD truck is truly a force to be reckoned with. If you want to learn more about this truck and all its driver convenience features and amenities, our sales associates can help you explore the trims and take you on a test drive. Visit us today at Vachon Buick GMC in Old Saybrook, CT to see the Sierra HD trucks in person, explore your favorite trims, and schedule your test drive.

The powertrain of your GMC includes the engine, transmission, driveshafts, differentials, and axles. To ensure your truck or SUV generates and delivers full force to the wheels with optimal efficiency, each drivetrain component must be kept in tip-top shape with regular preventative maintenance at your local GMC dealership. Here's an outline of what's involved in good powertrain care. Oil Changes and Engine Tune-Ups As the seat of your GMC's impressive power, the engine must always be well-lubricated with high-quality motor oil. This means routine oil changes twice a year or more. You should also have the engine examined and tuned up once a year. Cooling System Inspections Every component of the cooling system also needs to be professionally inspected once a year. In addition, it's wise to check the condition of your coolant monthly and have it flushed every two years. Air Filter Replacements When the engine air filter becomes blocked by an accumulation of airborne debris, the cylinders can no longer draw in sufficient oxygen to operate properly. Replace your air filter once a year and check it periodically. Transmission Services The gearbox and clutch transmit the engine's power to the axles and wheels. Automatic transmissions are extremely complex and require yearly inspections. You'll typically need to flush the transmission fluid every 60,000 to 100,000 miles. Driveshaft Inspections The driveshaft is an often-overlooked part of the drivetrain that nevertheless serves a vital function. Ensure your driveshafts are properly lubricated and undamaged with yearly inspections. Differential Fluid Flushes A smaller gearbox exists inside each of your car's differentials that also requires high-quality fluid. You'll need to have your differential seals, gears, and fluid checked once a year. Axle Seal and Bearing Checks The axle seals and wheel bearings at the front and rear of your car need to be checked yearly. You'll occasionally need to replace both seals and fluid. Transfer Case Maintenance With all-wheel or four-wheel drive models, you'll also have a transfer case to maintain. This component transfers power to both the front and rear axles, playing a key role in the drivetrain. If your vehicle has a transfer case, the fluid inside requires flushing every 25,000 miles or so. Schedule Routine Powertrain Care with Us The considerable power and dependable performance of your GMC truck or SUV will continue for many years and possibly even decades with regular service. Allow us to take good care of your drivetrain for you. With routine scheduled maintenance, we'll minimize the risk of parts wearing out or failing prematurely. Visit Vachon Buick GMC in Old Saybrook, CT, to have your truck or SUV's powertrain promptly serviced by experience technicians.

The 2025 GMC HUMMER EV SUV is one of the most outstanding adventure vehicles. Its powerful powertrain and high-end performance can challenge all explorers and environmentalists. 6 Bold Capabilities of the 2025 GMC HUMMER EV SUV Unapologetic Power Whether you're driving through the downtown or conquering the great outdoors, the 2025 HUMMER EV SUV has the power to take you places. With an electric motor on each axle and a high-capacity battery, the base powertrain provides 570 horsepower and 7,400 pound-feet of torque. A three-motor layout with one front and two rear motors is available, boosting the output to 830 horsepower and 11,500 pound-feet of torque. Personalized Driving With five standard drive modes, you can easily adapt the SUV's dynamics to the road conditions or your driving style. In Normal mode, the HUMMER EV SUV offers balanced power and fuel economy, delivering a comfortable drive on asphalt. For smooth rides on grass, gravel, or dirt, you can switch to the Off-Road mode, which also optimizes driving dynamics for snow-covered roads. The Tow/Haul mode optimizes the torque and power distribution for efficient trailering, while the Terrain mode enables one-pedal driving for precise control in extreme off-road conditions or for rock crawling. You can also configure the various drive systems to suit your preferences with the personalizable My Mode. 4-Wheel Steer The innovative 4-Wheel Steer function syncs the front and rear tires in specific ways to reduce the turning circle, allowing you to perform tight turns. It can also turn the rear wheels in phase with the front wheels, enabling CrabWalk. This model allows you to move the SUV diagonally, so you can easily traverse tight trails or narrow streets. Extract Mode Incredibly capable of getting out of dangerous situations, this bold SUV also comes standard with an Extract Mode. This mode activates the adaptive air ride suspension, increasing ground clearance to 16 inches and enabling water fording at depths of 32 inches, allowing you to drive over tough obstacles, such as water creeks, ruts, and boulders. Available Watts to Freedom While the HUMMER EV SUV is made for the great outdoors, it is also incredibly agile on asphalt. To enhance its on-road performance, the Watts to Freedom mode, which is standard on the 3X trim level, reduces the ground clearance, improving the SUV's aerodynamics. It also provides power bursts when needed, meaning you can enjoy adrenaline-inducing acceleration with a 0-60 mph time of up to 3.5 seconds. Born to challenge the great outdoors yet incredibly agile on streets, the 2025 HUMMER EV SUV is the ultimate adventure vehicle. Visit us today at Vachon Buick GMC in Old Saybrook, CT, to explore it in our showroom or test it on the road.