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Regular alignments are as important as rotations for maintaining your tires. While rotations switch your tires around to keep them even, alignment sets them straight, returning each wheel to a perfectly parallel position. It's a good idea to book an alignment service twice a year at your local Buick dealership. Tire Alignment Service Offered at Your Buick Dealership Why Tires Become Misaligned Whenever your tires are bumped or jolted by potholes, curbs, or rocky surfaces, they become ever-so-slightly less perfectly aligned. This means the suspension holding each wheel in place has been adjusted. Uneven tires also push themselves out of proper alignment. For most drivers, it takes a long time for tires to become noticeably misaligned, when their handling and steering eventually start to suffer. The Three Angles of a Car Tire Tire alignment is measured on three angles. The toe angle can be seen from above and measures whether the tires are pointed inward or outward, which would steer the tire toward the left or right. The camber angle is seen most clearly from the front of the car, measuring whether the tops of the wheels are leaning inward or outward. The caster angle, which can be seen from the side, measures whether the wheel's steering axis is tilted forward or backward. Problems Caused By Bad Alignment When car tires aren't straight anymore, steering can become looser and less accurate, and the vehicle may veer off to one side. The tires will also develop uneven wear patterns, which lessens traction and heightens the risk of blowouts. Your car's overall road noise and vibrations will also increase, along with rolling resistance and fuel costs. Eventually, your wheels will look clearly crooked, especially when viewed directly from the front. First, Measure Your Alignment Naturally, drivers who spend most of their time on well-maintained highways tend to have better alignment than frequent off-roaders. As alignment issues vary from driver to driver, you'll need to have the angles of each wheel measured regularly to determine how it's doing. It makes sense to have an alignment check carried out twice a year, each time you have your tires rotated. Correct Your Alignment When Needed If any of your wheels are found to be out of alignment, it's time to correct them. Your car will be raised, and an alignment machine will be attached to each wheel. This machine measures the three angles very precisely, providing computerized readouts that our mechanic can use to adjust the suspension, bringing each wheel back into its original factory alignment. The entire process rarely takes longer than an hour. Test the alignment of your tires today at Vachon Buick GMC in Old Saybrook, CT.

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.

After receiving a luxury-oriented design overhaul for 2024, the 2025 Buick Envision delivers a refined and sophisticated compact SUV. Advanced technology and premium design marry with expertly engineered performance to produce a standout luxury SUV. Discover the 2025 Buick Envision Power Meets Comfort The 2025 Envision boasts a 2.0-liter, turbocharged inline four-cylinder engine, alongside a nine-speed automatic transmission and intelligent all-wheel drive with active twin-clutch as standard. All this adds up to a sporty 228 horsepower and 258 lb-ft of torque. Fuel economy is equally impressive for a vehicle of this class, with the Envision rated for 22 mpg city, 28 mpg highway, and 24 mpg combined. Despite the turbocharged engine, driver comfort remains Buick's priority. 5-link rear suspension comes as standard, offering excellent handling and ride quality. The Avenir trim offers unparalleled ride comfort thanks to its Continuous Damping Control (CDC), which automatically identifies road conditions and continually adjusts damping accordingly to optimize vehicle handling and deliver the best possible driving experience. Luxury Inside and Out The Envision's exterior design gives it a powerful presence. The intricate accents of the sleek grille and front fascia accentuate this, while the signature check-shaped LED daytime running lamps give the Envision a distinctive aesthetic. The available hands-free power liftgate shows that the exterior design is as much about function as it is form. Luxurious design continues into the vehicle, where you're greeted by a richly detailed yet elegantly refined cabin. Ambient interior lighting with selectable color options allows you to set the perfect mood for your drive. Buick's proprietary QuietTuning technology with Active Noise Cancellation comes as standard, further enhancing the tranquility of the cabin. Even greater luxury is offered by the Avenir trim, which boasts features like a massaging driver seat, sculpted to offer premium comfort and support. Advanced Technology Throughout A suite of advanced safety and driver assistance features assures that you'll enjoy a secure ride every time you get behind the wheel. Advanced standard safety technologies include: Front pedestrian and bicyclist braking Side bicyclist alert Rear cross-traffic braking Intersection automatic emergency braking Blind zone steering assist The Envision's advanced technology isn't all about safety features. An ultrawide 30" diagonal screen is at the heart of a state-of-the-art infotainment system. Built-in Google compatibility allows seamless access to Google Maps and hands-free functionality thanks to Google Assistant. A head-up display provides a futuristic experience behind the wheel, while ultra-modern connectivity lets you send remote commands to your Envision. You can lock and unlock the doors, remotely start your vehicle, and more from virtually anywhere. Experience the brand-new Buick Envision for yourself. Contact Vachon Buick GMC in Old Saybrook, CT today to arrange a test drive. Our dedicated team is on hand to answer any questions you might have and help get you behind the wheel of the perfect Envision for you.