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Choosing the right SUV is about more than just the model—it’s also about finding the trim that fits your lifestyle and style preferences. In this article, we’ll break down the GMC Acadia AT4, Denali, and Denali Ultimate trims to help you better understand what each offers, so you can make a confident and informed decision on which Acadia is right for you. more GMC Acadia AT4 The GMC Acadia AT4 is built for drivers who crave adventure and aren’t afraid to leave the pavement behind. Designed with off-road capability in mind, the AT4 features a lifted ride height, an off-road–tuned suspension, and a Traction Select System with an AT4-exclusive Terrain Mode that helps maintain confidence and control on uneven terrain. Key Features Include: Active Torque Control AWD system 18-inch dark machined aluminum wheels with all-terrain tires Off-road–focused suspension tuning for enhanced capability Traction Select System Starting Price: $52,500 GMC Acadia Denali The GMC Acadia Denali is ideal for drivers who want a bold, upscale exterior paired with a refined and comfortable interior—without stepping into ultra-luxury pricing. This trim elevates the Acadia experience with quality materials and advanced technology. Key Features Include: Unique Denali grille and badging with Galvano Silver accents Premium interior with leather-appointed first- and second-row seating Configurable 8-inch diagonal Head-Up Display 20-inch machined aluminum wheels with Pearl Nickel finish Third-row power-folding seats and second-row one-touch folding seats Heated and ventilated front seats Starting Price: $55,900 GMC Acadia Denali Ultimate The GMC Acadia Denali Ultimate is designed for drivers who want it all—the pinnacle of Acadia luxury paired with cutting-edge technology and refined craftsmanship. As the most premium trim in the lineup, Denali Ultimate delivers an elevated driving experience with exclusive design details and advanced comfort features throughout. Key Features Include: Super Cruise hands-free driver assistance technology Exclusive Denali Ultimate interior with laser-etched authentic wood accents Heated and ventilated Woodland Mahogany full-leather, massaging front seats with plaited contrast stitching Vader Chrome grille and GMC emblems Bose 16-speaker Performance Series sound system Panoramic sunroof Starting Price: $63,100 No matter which GMC Acadia trim you choose, each offers a distinct blend of capability, comfort, and style. By reading this breakdown, we hope that you understand what each trim brings to the table and can choose the Acadia that best fits your lifestyle, driving needs, and budget. Acadia Collection Contact Us

If you’re searching for an SUV that confidently blends capability with comfort and advanced technology, the 2026 GMC Acadia stands out as a true all-around performer. Designed to handle challenging terrain while delivering a smooth, comfortable ride, the Acadia offers an impressive balance of power, practicality, and innovation. more Design & Comfort The interior of the 2026 GMC Acadia is thoughtfully designed with premium materials and a focus on comfort. The Denali Ultimate trim features Woodland Mahogany full leather seating, adding a refined feel to the cabin. With three spacious rows of seating, the Acadia provides room for both passengers and cargo. The second- and third-row seats fold down easily, allowing you to adapt the space for family trips, road adventures, or everyday hauling needs. On the outside, the Acadia showcases a bold and confident design that reflects its capable nature. Its rugged yet sleek style ensures it looks just as good navigating city streets as it does tackling off-road terrain. Technology & Safety The 2026 Acadia comes equipped with a range of available technologies designed to enhance convenience and driving confidence. Features such as available Super Cruise hands-free driving assistance and a Head-Up Display help make long drives more relaxing. A standard nine-camera view system provides enhanced visibility, allowing drivers to better see their surroundings in a variety of driving situations. Safety is a major priority in the 2026 GMC Acadia. With more than 19 standard and available safety and driver-assistance features, the Acadia is engineered to help protect you and your passengers. Technologies such as HD Surround Vision and Forward Collision Alert add an extra layer of awareness and confidence behind the wheel. Capability Powering the 2026 GMC Acadia is a 2.5L Turbo Engine producing 328 horsepower and 326 lb.-ft. of torque, paired with an 8-speed automatic transmission. This setup delivers strong performance for both daily driving and demanding conditions. When equipped with the available Trailering Package, the Acadia offers a maximum towing capacity of up to 5,000 pounds, making it well-suited for hauling trailers, boats, or recreational equipment. With its combination of comfort, technology, safety features, and capability, the 2026 GMC Acadia proves itself as a versatile SUV ready for any lifestyle. Whether you’re commuting, road-tripping with family, or exploring off the beaten path, the Acadia delivers a confident and well-rounded driving experience that’s built to handle it all. Acadia Collection Contact Us

When considering a GMC Sierra for your next truck purchase near Morton, IL, understanding the safety features and packages available is crucial. The GMC Sierra Safety Plus package extends the capabilities of the standard Pro Safety suite with enhanced driver assistance systems that improve awareness and help prevent accidents. Whether you’re navigating busy streets in Peoria or towing heavy loads near Pekin, these packages provide peace of mind with cutting-edge technology. At Lighthouse Buick GMC, located at 100 W Jackson St, Morton, IL 61550, and reachable at (309) 938-4190, we’re here to help you explore these advanced safety options in depth. Table of Contents What Is the Sierra Safety Plus Package? Details the enhanced safety technologies included, focusing on blind-spot detection, rear cross-traffic alerts, and parking assistance to increase driver awareness. What Is the GMC Pro Safety Plus Package? Explains how Pro Safety Plus builds upon the Pro Safety suite with additional radar-based alerts, suitable for drivers frequently in traffic or tight parking spots. What Is Included in the GMC Pro Safety Package? Breaks down the core driver assistance features designed to prevent collisions before they happen, including pedestrian detection and collision alerts. Difference Between GMC Pro Safety and Pro Safety Plus A detailed comparison highlighting the extra coverage and technology in Pro Safety Plus, helping you decide which package suits your driving needs. What Is the Highest Package for GMC Vehicles? Overview of GMC’s top-tier luxury trims, including Denali and Denali Ultimate, featuring advanced safety, technology, and premium comfort. Which GMC Trim Level Is Most Luxurious? Insight into the luxury, tech, and comfort features of higher-end trims like Denali, ideal for drivers seeking premium experiences in their trucks. Which GMC Trucks to Avoid and Reliability Concerns Guidance on model years and trims with known issues such as transmission problems and engine concerns, equipping you to make informed used truck purchases. What Is the Most Reliable GMC Pickup Truck? Recommendations for GMC pickup models and years noted for durability, longevity, and overall reliability on Illinois roads and beyond. Which GMC Trucks Have Transmission Problems? Examination of transmission concerns affecting specific model years and how to identify and avoid these problems. What Is the Sierra Safety Plus Package? The Sierra Safety Plus package is an enhanced safety suite tailored for the GMC Sierra that extends the standard GMC Pro Safety features with critical additions aimed at improving driver visibility and parking ease. This package is typically available on mid- to higher-level trims such as the Elevation and SLT. Core Features of the Sierra Safety Plus Package Lane Change Alert with Side Blind Zone Alert: Utilizes radar sensors to monitor adjacent lanes, alerting the driver via visual warnings in the side mirrors if a vehicle is detected in the blind spot during lane changes. This feature is essential for highway driving near East Peoria or Morton where multi-lane roads are common. Rear Cross Traffic Alert: Assists when reversing by detecting vehicles or pedestrians crossing behind the truck, providing audible and visual alerts. This is particularly helpful in crowded parking lots, such as those in downtown Peoria or near local shopping centers. Rear Park Assist: Uses ultrasonic sensors to measure the distance between the rear of the vehicle and obstacles, giving audio cues that help drivers park more confidently in tight spaces. Integration with GMC Pro Safety The Safety Plus suite complements core systems like: Forward Collision Alert: Detects potential front-end collisions and warns the driver in advance. Automatic Emergency Braking: Applies the brakes automatically if a collision is imminent and the driver fails to respond. Lane Keep Assist: Helps steer the vehicle back into its lane if it begins to drift unintentionally. Front Pedestrian Braking: Identifies pedestrians in your path and can automatically brake to prevent accidents. Following Distance Indicator: Displays the time gap to the vehicle ahead to maintain safe spacing. IntelliBeam® Auto High Beams: Automatically adjusts headlights for optimal visibility without blinding other drivers. This combination of features creates a comprehensive protective network, making everyday driving in Morton, Peoria, or Pekin safer and less stressful. What Is the GMC Pro Safety Plus Package? The GMC Pro Safety Plus package builds upon the foundational Pro Safety suite with added radar-based monitoring and parking technologies. While Pro Safety forms the baseline for accident prevention, Pro Safety Plus enhances situational awareness, especially during lane changes, reversing, and in congested environments. Advanced Features in Pro Safety Plus Blind Spot Monitoring: Radar sensors scan blind spots continuously, alerting you with LED indicators on side mirrors to vehicles approaching from behind or alongside. Rear Cross Traffic Alert: Provides warnings about cross-traffic movement behind the vehicle when backing out of parking spots. Rear Park Assist: Detects obstacles during low-speed maneuvers, reducing parking stress in tight urban or suburban settings. These features are particularly valuable for drivers who frequently navigate highways or busy parking lots around Morton and surrounding areas. Pro Safety Plus is often included or available as an upgrade on trucks like the Sierra, Yukon, and Acadia. What Is Included in the GMC Pro Safety Package? The GMC Pro Safety package is a set of six core safety technologies designed to help prevent accidents before they occur. This package is standard or available on many GMC models and delivers vital assistance in everyday driving conditions. Breakdown of Pro Safety Features Lane Keep & Departure Warning: Monitors lane markings and gently nudges the vehicle back if it drifts unintentionally without signaling. IntelliBeam® Auto High Beams: Automatically switches between high and low beams depending on traffic and lighting conditions, enhancing night driving safety. Forward Collision Alert: Uses cameras to detect vehicles or objects ahead, alerting the driver to potential collisions. Following Distance Indicator: Helps maintain a safe distance from the vehicle ahead by showing the time gap in seconds. Front Pedestrian Braking: Detects pedestrians crossing in front and can apply brakes if the driver does not respond. Automatic Emergency Braking: Engages the brakes automatically in critical situations to avoid or mitigate collisions. These features work synergistically to reduce accident risk and provide drivers with intuitive alerts and interventions. Difference Between GMC Pro Safety and Pro Safety Plus Understanding the differences between the two safety packages helps you choose the right level of protection for your driving habits. Feature Pro Safety Pro Safety Plus Forward Collision Alert ✔ ✔ Automatic Emergency Braking ✔ ✔ Lane Keep Assist ✔ ✔ Following Distance Indicator ✔ ✔ Front Pedestrian Braking ✔ ✔ IntelliBeam® Auto High Beams ✔ ✔ Blind Spot Monitoring ✔ Rear Cross Traffic Alert ✔ Rear Park Assist ✔ Key Insight: Pro Safety Plus adds blind spot detection, rear cross-traffic alerts, and rear park assist to the baseline Pro Safety features, making it ideal for drivers who want enhanced monitoring especially in urban or highway settings. Those who regularly engage in highway commuting near Morton or park in tight spaces will find Pro Safety Plus particularly valuable. What Is the Highest Package for GMC Vehicles? The ultimate in GMC luxury and technology is represented by the Denali and Denali Ultimate trims. These top-tier packages combine advanced safety, premium materials, and sophisticated design for a truly upscale driving experience. Denali Trim Highlights Luxurious Interior: Leather-appointed heated and ventilated seats, real wood and aluminum accents, and high-end stitching details. Advanced Safety: Includes Pro Safety Plus features along with additional driver assistance systems. Powerful Engines: Available 6.2L V8 with up to 420 horsepower, paired with a 10-speed automatic transmission. Signature Styling: Distinctive chrome grille, 20-inch wheels, and refined exterior detailing. Denali Ultimate Trim Features Exclusive Styling: Vader Chrome grille and badging, unique 22-inch machined wheels. Premium Materials: Full-grain leather with plaited stitching, authentic Paldao wood accents with laser-etched topographical maps. Technology: Super Cruise® hands-free driver assistance technology with a 3-year OnStar plan, advanced infotainment, and Bose premium audio. Comfort: 16-way power-adjustable massaging front seats, multi-zone climate control. These trims are available on models like the Sierra 1500, Sierra HD, Yukon, and Acadia, representing the pinnacle of GMC’s craftsmanship and technology. Which GMC Trim Level Is Most Luxurious? For drivers seeking the highest level of comfort, technology, and style, the Denali and Denali Ultimate trims stand out as the most luxurious options in the GMC lineup. Denali Trim: Offers a harmonious blend of powerful performance, refined interiors, and advanced safety features. With heated and ventilated leather seats, premium sound systems, and upscale materials, it elevates the driving experience. Denali Ultimate: Takes luxury a step further with exclusive exterior accents, enhanced seating comfort including massage features, and state-of-the-art technology like Super Cruise, enabling hands-free highway driving on compatible roads near Morton and beyond. These trims are ideal for those who want a commanding vehicle that combines rugged capability with refined elegance. Which GMC Trucks to Avoid and Reliability Concerns When choosing a GMC truck, especially on the used market, it’s important to be aware of model years and trims known for reliability issues. Certain vehicles have been reported to have mechanical, electrical, or transmission problems. GMC Trucks and Model Years to Approach with Caution 2001-2003 & 2005-2007 Sierra 1500: Known for engine reliability concerns and electrical issues. 2014-2018 Sierra 1500: Frequently cited for transmission problems, including shuddering and harsh shifting with 8-speed automatic transmissions, as well as headlight failures. 2019-2021 Sierra 1500: Some 6.2L V8 engines had lifter and bearing wear issues. 2014-2016 Yukon: Reports of infotainment system glitches and sensor errors. Affected Transmission Models: 8-speed (2015-2019) and 10-speed (2020-2022+) automatics have been linked to valve body leaks, rear wheel lock-ups, and software recalls. Practical Tips for Buyers Obtain a full vehicle history report including recalls and service records. Schedule thorough test drives, paying attention to transmission performance and electronic system function. Confirm that any recall work, especially related to the 10-speed transmission, has been completed. At Lighthouse Buick GMC, we can assist you in selecting reliable GMC trucks and offer professional maintenance to keep your vehicle in optimal condition. Contact us at (309) 938-4190 or visit us at 100 W Jackson St, Morton, IL 61550 for expert advice. What Is the Most Reliable GMC Pickup Truck? Reliability is a critical factor for truck owners, especially those using their vehicles for work or long-distance travel across Illinois and surrounding states. Top Reliable GMC Trucks GMC Sierra 1500: Particularly models from 2016 to 2018, 2020, and 2021 have been recognized for strong reliability, robust engines, and solid build quality. GMC Canyon: The mid-size Canyon is praised for durability, especially with the Duramax diesel engine option, capable of surpassing 200,000 miles with proper care. Sierra 2500HD: Diesel variants equipped with the Duramax 6.6L Turbo-Diesel engine have earned reputations for longevity and dependability. Reliability Factors Regular maintenance such as timely oil changes, transmission fluid checks, and adherence to manufacturer service schedules can extend vehicle life. Models built after 2010 benefit from advanced manufacturing techniques and improved component quality. Choosing a reliable GMC pickup from Lighthouse Buick GMC ensures you receive a vehicle that aligns with your demands for performance and longevity on the roads around Morton, Peoria, and beyond. Comprehensive Safety and Reliability: The Lighthouse Buick GMC Promise Choosing a GMC Sierra equipped with the Safety Plus or Pro Safety packages means investing in your safety and driving confidence. Paired with selecting reliable model years and trims, you can enjoy the rugged capability and luxury GMC trucks are known for, without compromise. Our dealership at 100 W Jackson St, Morton, IL 61550, offers expert guidance on the latest GMC safety technology and can help you find a Sierra or other GMC truck tailored to your needs. Contact us at (309) 938-4190 to schedule a test drive or consultation. Experience GMC’s commitment to safety, luxury, and reliability firsthand with Lighthouse Buick GMC. © 2025 Lighthouse Buick GMC

If you want the highlights of the Sierra 1500 AT4 in the new Coastal Dune color—fast, you’re in the right place. This quick overview pairs with our 1-minute walk-around video to cover the most important features and benefits in as little time as possible. Performance At the heart of the Sierra 1500 AT4 is the Duramax® 3.0L Turbo-Diesel engine, paired with a 10-speed automatic transmission. This setup delivers strong torque, smooth shifting, and excellent efficiency—ideal for towing, daily driving, and long-distance travel. Off-Road Capability The AT4 is built to handle challenging terrain straight from the factory: 2" factory lift for added ground clearance Off-road suspension with Rancho® monotube shocks for improved control Two-speed Autotrac® transfer case for confident traction in changing conditions Underbody skid plates for added protection off-road Interior Comfort Inside, the AT4 blends rugged capability with premium comfort: Jet Black interior with Kalahari accents Heated and ventilated perforated front leather seats for year-round comfort Technology Everything you need is right where you want it: 13.4" diagonal Premium GMC Infotainment System 12.3" diagonal Driver Information Center Heads-Up Display to keep key info in your line of sight Why Coastal Dune? The new Coastal Dune exterior color adds a bold, refined look that perfectly matches the AT4’s off-road attitude. If you’re looking for a truck that delivers capability, comfort, and technology without wasting time, the Sierra 1500 AT4 in Coastal Dune checks all the boxes. Watch the 1-minute walk-around, then come see it in person! Sierra 1500 Collection Contact Us

Being a truck owner means needing a vehicle that’s ready for any job. Yet most traditional tailgates only do one thing—and that leaves a lot of potential on the table. The GMC Sierra HD changes the game with its Six-Function MultiPro Tailgate. Join us as we break down each of its configurations and show how they work together to maximize functionality, capability, and everyday convenience. Six-Function Break Down Closed Position: In this traditional tailgate setting, the gate is fully upright—just like a standard truck tailgate. Its job is simple but essential: keeping your cargo securely inside the bed and preventing anything from sliding out during transport. Primary Gate Position: This is the classic tailgate-down setup. Lowering the gate gives you straightforward access to the bed, making it easy to load gear in or take it back out. Primary Load Stop Position: In this mode, a built-in load stop flips up and locks into place while the tailgate is lowered. It effectively extends the usable length of the bed, letting you haul longer items—like lumber or sheet goods—without worrying about them sliding out the back. Easy Access Position: With the tailgate lowered, you can release an additional section that swings down even farther. This brings the edge of the bed closer to you—about a foot—making it significantly easier to reach in and grab items without having to climb up or stretch as far. Full-Width Step: With the tailgate in the Easy Access position, you can fold down an integrated panel that creates a sturdy, full-width step. It’s rated to support up to 375 pounds, making it a reliable boost for climbing in and out of the truck bed. It can even double as a small bench whenever you need to take a quick break between tasks. Work Surface Position: With the main tailgate closed, you can fold down a dedicated inner panel to create a convenient work surface. It’s a perfect spot for setting tools, measuring materials, or organizing whatever you need to get the job done efficiently. The Sierra HD’s MultiPro Tailgate isn’t just a clever piece of engineering—it’s a genuinely useful tool that adapts to the way you work and play. With six distinct functions designed to improve access, increase capability, and boost convenience, it transforms the truck bed into a more versatile space than ever before. Whether you’re hauling materials for a project, loading up gear for a weekend adventure, or simply looking for smarter ways to get things done, the MultiPro Tailgate proves that the right features can make all the difference. Sierra HD Collection Contact Us

Choosing a truck is tough — and choosing the right engine can be even tougher. In this guide, we break down every engine option available on the Sierra 1500, compare their performance, and explain which trims offer each one, so you can make a confident and informed decision on which engine will best fit your lifestyle. Engine Comparison: Take a look at the chart below to easily compare the performance of each engine. It highlights the key differences in horsepower, torque, and towing capacity, giving you a clear side-by-side view to help you decide which trim best fits your needs. Below that, you’ll find a second chart that outlines engine availability across all Sierra 1500 trim levels. This chart makes it simple to see which engines can be paired with each trim, helping you quickly narrow down the configurations that match your preferences. TurboMax 6.2L V8 Duramax 3.0L Turbo-Diesel 5.3L Gas Horsepower 310 420 305 355 Standard Torque (lb.-ft.) 430 460 495 383 Available Max Tow Capacity (lbs.) 9,400 13,100 13,300 11,200 Engine to Trim Availability TurboMax 6.2L V8 Duramax 3.0L Turbo-Diesel 5.3L Gas PRO Standard x x Available SLE Standard x Available Available ELEVATION Standard x Available Available SLT x Available Available Standard AT4 x Available Standard x AT4X x Available Standard x DENALI x Available Available Standard DENALI ULTIMATE x Standard Available x After reviewing these charts and comparisons, we hope you feel able to make a more informed and confident decision. With a clearer understanding of each engine’s performance and availability, you’re now better equipped to choose the Sierra 1500 setup that fits your lifestyle and driving needs perfectly. Sierra 1500 Collection Contact Us

When the pavement ends, the GMC Sierra 2500 AT4 stands ready to take on whatever challenge lies ahead. Built for those who demand more than just power — but also precision, durability, and confidence on any terrain — the Sierra HD AT4 combines off-road capability with best-in-class towing strength. The Sierra 2500 AT4 is well equipped for any terrain with its 10.1” ground clearance, 20” all-terrain, blackwall tires, and high gloss black aluminum wheels. This powerhouse also has an Off-Road Suspension Package with twin-tube Rancho shocks, skid plates, automatic locking rear differential, and Hill Descent Control, which uses antilock braking to help maintain control. Despite its rugged capability and hardworking nature, the Sierra 2500 AT4 offers a surprisingly refined and comfortable interior experience for the driver. The Jet Black interior with Kalahari accents creates a bold look, complemented by premium leather seating surfaces. Heated and ventilated front seats, along with a heated steering wheel, ensure year-round comfort no matter the conditions outside. The Advanced technology of the Sierra 2500 AT4 enhances every drive, with convenient features like wireless charging and remote start, while the expansive 13.4-inch Infotainment System provides added confidence with HD Surround Vision that will show a comprehensive view around the vehicle, making every maneuver easier and safer. The Sierra 2500 AT4 delivers the power and capability to conquer tough jobs and rugged terrain, all while keeping every drive comfortable. It’s a truck built for those who expect more from their vehicle—strength when it counts and confidence in every mile. Sierra HD Collection Contact Us

The GMC Sierra 1500 Denali Ultimate isn’t just a pickup—it’s a statement. Designed to stand toe-to-toe even in the high-end luxury SUV market. This truck blends craftsmanship, capability, and cutting-edge technology into one package. Step inside and you’re greeted by a cabin that feels more like a first-class lounge than a work truck. Premium leather materials, wood accents, and an infotainment display screen create an atmosphere built for comfort on every drive whether you’re commuting through the city, or traveling across the country. But this truck is more than looks—it’s built to perform. With impressive towing and hauling capabilities and advanced trailering tech, the Sierra is as ready for weekend adventures as it is for demanding jobs. And with features like Super Cruise hands-free driving and a powerful suite of driver-assist technologies, it makes every drive effortless and confident. Fit for any lifestyle, the Sierra 1500 Denali Ultimate is perfect for those who demand versatility without compromise. Whether you’re chasing luxury, adventure, or performance, this truck proves you can have it all—on the pavement or far beyond it. Sierra 1500 Collection Contact Us

When it comes to purchasing a Sierra HD, each engine option offers unique capabilities designed to suit different drivers’ needs. Let’s take a closer look at the key differences between the 6.6L V8 Gas Engine and the 6.6L V8 Duramax Turbo-Diesel Engine to help you decide which one is the best fit for you. more 6.6L Gas vs. 6.6L Duramax Turbo-Diesel The chart below shows a side by side comparison between the two different engine options. Type: 6.6 V-8 6.6L V-8 Duramax Turbo-Diesel Fuel Type: Regular Gasoline (87 Octane) Ultra-Low Sulfer Diesel and B20 Biodiesel Horsepower: 401 HP (299kW) @ 5200 RPM* 470 HP (350 kW) @ 2800 RPM* Torque: 464 lb-ft (629 Nm) @ 4000 RPM* 974 lb.-ft. (1,322 Nm) @ 1600 RPM* Emissions Control: Catalytic Converter, Three-Way Catalyst, Positive Crankcase Ventilation Cooled Exhast Gas Recirculation, Selective Catalytic Reduction, Diesel Particulate Filter, Intake throttle Displacement: 6564 CC (400 CI) 6604 CC (403 CI) Engine Orientation: Longitudinal Longitudinal Compression Ratio: 10.8:1 16.0:1 Valve Configuration: Overhead Valves Overhead Valves Valves per Cylinder: Two Four Valve Lifters: Hydraulic Roller Mechanical Roller Firing Order: 1-8-7-2-6-5-4-3 1-2-5-7-8-4-5-6-3 Bore x Stroke: 103.25 x 98.0 mm 103 x 99 mm Block: Cast Iron Cast Iron Cylinder Head: Cast Aluminum Cast Aluminum Intake Manifold: Composite Cast Aluminum Exhaust Manifold: Stainless Steel Cast Nodular Iron with Steel Pipe Extension Main Bearing Caps: Cast Nodular Cast Nodular Iron with Steel Pipe Extension Crankshaft: Forged Steel Forged Steel Camshaft: Billet Steel Steel Connecting Rod: Forged Powder Metal PM Iron *As tested in the Chevrolet Silverado Heavy Duty and GMC Sierra Heavy Duty. After looking over the table, you’ll notice that both engines deliver impressive performance, but they’re built for different priorities. The 6.6L V8 Gas Engine offers strong horsepower and smooth, consistent power for everyday driving and lighter towing needs. On the other hand, the 6.6L Duramax Turbo-Diesel stands out with its torque and efficiency—perfect for heavy-duty towing, hauling, and long-distance performance. No matter which you choose, the Sierra HD delivers the strength and dependability you can count on. Sierra HD Collection Engine Availability The standard or availability of these engines changes for the different trims of the Sierra HD. The chart below shows which of the two engines are either standard or available as an upgrade on each of the Sierra HD trims. Engine 6.6L V-8 Gas 6.6L V-8 Duramax Turbo-Diesel Trim: ✅ ✴️ PRO ✅ ✴️ SLE ✅ ✴️ SLT ✅ ✴️ AT4 ✅ ✴️ AT4X ✅ ✴️ DENALI ✅ ✴️ DENALI ULTIMATE ❌ ✅ ✅ = Standard ✴️ = Available ❌ = Not available After reviewing the Sierra HD engine comparison and availability charts, we hope you now feel more confident and informed about which engine best fits your driving needs. Whether you value the balanced strength and everyday versatility of the 6.6L V8 Gas Engine or the unmatched towing power of the 6.6L Duramax Turbo-Diesel, both options deliver the dependability that drivers expect from GMC. No matter which engine you choose, your Sierra HD is built to handle the toughest jobs with confidence and capability mile after mile. Sierra HD Collection Contact Us

In the market for a new truck? The GMC Sierra 1500 is a top contender — bold design, serious capability, and enough tech to make your commute a lot more enjoyable. But with multiple trim levels, figuring out which one actually fits you can get overwhelming fast. In this guide, we’re breaking down four Sierra 1500 trim s in a way that anyone can understand. Whether you’re looking for a reliable workhorse, an off-road-ready beast, or a luxury truck with all the bells and whistles, we’ll help you understand the key differences and find the trim that’s the best fit for you. Note that each trim comes with most of the standard features of the previous and then some added ones of its own, so most of the features stack as the trim level increases. There are also available features to add on for each trim. Elevation Trim - Bold Looks for the Everyday Driver The Elevation trim is for drivers who want their truck to stand out with a clean, monochromatic build with blacked-out accent pieces like the grille and wheels. It is the ideal trim for someone who wants a mix of modern tech, solid capability, and a bold look for a more approachable price point. Standard Elevation Key Features: Blacked-out exterior accents 20" gloss-black painted aluminum wheels LED fog lamps 13.4" touch screen Heated driver seat Heated steering wheel Available add-ons: Leather-appointed front seating Power sunroof SLT Trim - Refined Power to get the Job Done The STL trim mixes traditional truck toughness with refined power, making it a great choice for professionals and families who want more comfort and chrome without compromising utility. It's a solid middle ground option for those who need both work-ready performance and everyday convenience. Standard SLT Key Features: 5.3L V8 engine Chrome grille, door handles, and bumpers Heated and ventilated front seats Leather-appointed seats Power folding side mirrors Available add-ons: Duramax 3.0L Turbo-Diesel engine ProGrade Trailering System Chrome wheel-to-wheel assist steps Sierra 1500 Collection AT4 Trim - Built for the Adventurous If your weekends are spent off the beaten path and your weekdays still demand a comfortable, high-tech cabin, the AT4 is built for you. It’s designed for the off-road enthusiast who doesn’t want to sacrifice luxury, making it as capable on the trail as it is impressive on the roads. Standard AT4 Key Features: Duramax 3.0L Turbo-Diesel engine 2" factory lift with off-road suspension Jet Black interior with Kalahari accents Advanced Trailering Underbody skid plates Available addons: 6.2L V8 engine 15" Heads-up Display Denali Trim - Luxury and Innovation at It's Peak The Denali trim is where rugged capability meets first-class luxury. Designed for those who expect more from their truck — in both performance and presence — Denali delivers a commanding look, a luxury appointed interior, and cutting-edge technology that elevates every drive. Standard Denali Key Features: Signature grille with chrome header 7-spoke 22" aluminum wheels with premium paint and chrome inserts Chrome wheel-to-wheel assist steps Six-function MultiPro Tailgate 12-way power front seats Luxury interior materials (Authentic wood, patterned aluminum trim, and Forge perforated-leather seating) Available add-ons: Super Cruise hands-free driver assistance Duramax 3.0L Turbo-Diesel engine CarbonPro composite bed Whether you're navigating city streets, towing on the job site, or heading off the grid for weekend adventures, there's a GMC Sierra 1500 trim for everyone, designed to fit your lifestyle and elevate every drive. Sierra 1500 Collection Contact Us

End of Year Tax Savings - 2025 With the end of 2025 right around the corner, are you taking advantage of your tax savings opportunities for your business? Section 179 of the IRS tax code was created so that business owners can write off a portion of the cost of new or used vehicles. The One Big Beautiful Bill Act of 2025 (OBBBA) made a significant change to Section 179 as well as bonus depreciation. These changes, when used together, may allow businesses to deduct up to 100% of vehicle purchases. Now is a great time to expand your fleet as a business owner. To maximize your tax savings, it makes sense to also maximize the value of the vehicle you choose. The GMC Sierra HD delivers on both fronts, offering impressive tax benefits and top-tier capability. Power That Performs. Powered by a Duramax 6.6L Turbo-Diesel V8, the GMC Sierra HD is engineered for serious performance, delivering 470 horsepower and a massive 975 lb.-ft. of torque. Designed with towing in mind, this engine features an exhaust brake for enhanced control on descents, a powerful turbo vane actuator, and heavy-duty valve springs for added durability. When equipped with the available Max Trailering Package and the Duramax engine, the GMC Sierra 2500 HD Crew Cab can tow up to an impressive 21,870 lbs. Technology That Excels 12.3" Driver's Information Center - Essential information front and center at your wheel with easy visibility and high resolution. 13.4" Premium GMC Infotainment System - Built in Google compatibility and voice activated technology that provides a seamless way to customize entertainment. 15" Head-Up Display - Important information like your speed, low fuel warning, off road inclinometer, and mobile alerts right in front of you, so you don't have to take your eyes off the road. ProGrade Trailering System - Advanced set of available technologies that streamline the hitching and towing process with up to 14 available camera angles using transparent trailer view that allows the driver to "see through" the trailer as if it wasn't there. (Displays not available on Pro) Every GMC Sierra 2500 HD and 3500 HD includes active safety driver assistance tech that helps aid in driving and trailering. Safety Features: Forward collision Alert Following distance indicator Automatic emergency braking lane departure warning Buckle to drive Rear view mirror camera Exterior That Shines. The GMC Sierra HD Denali will have heads turning with its chrome grille, front bumper and fascia. The lights in the HD are just as striking with animated sequences to help enhance the exteriors overall design, but the real bonus in the Sierra HD's exterior is its Six-Function Multi-Pro Tailgate. Six-Function Multi-Pro Tailgate Features: Load stop to prevent items from sliding out of the bed Fold-Down inner gate for easy access Inner gate can fold into a full-width step, capable of holding up to 375 lbs Inner gate load stop to prevent second-tier items from sliding out of the bed Disable the inner gate to prevent it from being opened when a hitch or other equipment is attached The opened inner gate provides a spacious work surface Available Integrated MultiPro Tailgate Audio System so you can take music outdoors Interior That Comforts. The Sierra HD Denali Ultimate might have an aggressively powerful look on the outside, but on the inside, it's luxury, outfitted with a sleek Alpine Umber interior featuring full-grain leather seating, plaited contrast stitching, and embossed and laser-etched topographical map patterns of its namesake’s mountain summit. With the end of 2025 fast approaching, now is the time to take full advantage of available tax deductions. Adding one or more vehicles to your fleet can help offset business expenses - and the GMC Sierra HD is a smart choice. It’s built for capability, engineered for performance, and ready to deliver serious value for your business, both on the job site and on your bottom line. SIERRA HD INVENTORY 🔎

more The GMC Sierra 1500 Elevation isn't just another truck - it's a statement of style, capability, and modern engineering. With it's bold design, and powerful TurboMax engine, the Elevation trim makes for a perfect balance between hard work and daily driving comfort. Whether you're hauling gear, or heading out for a weekend getaway, this Sierra is built to rise to the occasion. This Sierra is built for YOU. Meet the TurboMax The Sierra might look powerful on the outside, but the real power lies inside, with the TurboMax Engine - a 4 cylinder 2.7L turbo engine. Need an engine that will get the job done? The TurboMax doesn't just meet expectations - it redefines them. Performance Highlights: 310 horsepower: This high-output engine delivers 310 horsepower, giving you plenty of power for highway merging, towing, and confident acceleration. Best-in-class 430 lb.-ft. of standard torque: With class-leading standard torque, the TurboMax offers incredible low-end pulling power meaning faster takeoffs when towing and better response in tough conditions. Up to 9,500 lbs. of maximum towing capacity: Need to tow a trailer, boat, or work equipment? The Sierra Elevation can confidently haul loads up to 9,500 pounds, giving you the muscle to take on a diverse set of jobs without stepping up to a larger engine or trim. Whether you're pulling a trailer or navigating off-road terrain, this Sierra will ensure you have the strength and control to get the job done. Exterior Design: Powerfully Styled, Built to Impress The Elevation trim sets itself apart with distinctive blacked-out styling and bold design elements that will have heads turning on the street or job site. Exterior Highlights: 20” Gloss Black Painted Aluminum Wheels: Aggressive and stylish, built to make a statement. Blacked-Out Grille: Adds a sleek, modern edge that leads the charge down the road. Signature LED Lighting: Crisp, bright lighting for added visibility. The Sierra Elevation is a truck that doesn’t just perform... it impresses, from every angle. Interior & Technology: Driver-Centric by Design Speaking of every angle, it's not just the exterior that's built to impress. Inside the Sierra Elevation, comfort and connectivity take center stage. From advanced tech to premium materials, the cabin is designed to support both productivity and relaxation. Interior and Tech Features Include: Standard Apple CarPlay & Android Auto: Seamless smartphone integration for navigation, calls, music, and more. Four-Wheel Drive (4WD): For all-weather confidence and off-road capability. Available Heated Steering Wheel: Adds a touch of luxury during cold Midwest mornings. Spacious Cabin: Designed with generous room for both driver and passengers, offering ample space to stretch out and stay comfortable on every drive. Whether you're commuting, working, or road-tripping, the Sierra keeps you connected and comfortable. Elevation Collection Leasing: Get More Truck for Less Leasing the GMC Sierra 1500 Elevation is a smart way to enjoy everything this truck has to offer with greater financial flexibility. Benefits of Leasing: Lower Monthly Payments: Compared to traditional financing, leasing allows you to pay less, for more. Drive Newer, More Often: Stay current with the latest features and technology without the long-term commitment or the hassle of going through the full financing process every time you want to upgrade to the newest release. Only Pay for What You Use: With leasing, you’re paying for the vehicle's value during the time you drive it and not the full sticker price. That makes it a cost-effective way to enjoy a brand-new Sierra with more manageable payments and shorter commitment. Ask about our current lease offers at Lighthouse Buick GMC and find out how you can get behind the wheel of a Sierra Elevation today. With an impressive, head-turning style at every angle, exceptional towing capacity, and unbeatable torque, the GMC Sierra 1500 Elevation is built for those who want a truck that can adapt to get the job done, without stepping up to a larger engine or trim. Whether you're upgrading your current ride or entering the truck market for the first time, this model delivers on every front. Visit us at Lighthouse Buick GMC in Morton, Illinois, and see firsthand why the Sierra 1500 Elevation is one of the smartest and boldest choices in its class. Elevation Collection Contact Us