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Completed Customer Build — Sold A Completed Customer Build from Dave Sinclair Customs This custom 2026 GMC Sierra 2500 HD Denali Ultimate was built by Dave Sinclair Customs in St. Louis, Missouri. Finished in Onyx Black, the truck received a 3.5-inch suspension lift, Nitto Trail Grappler tires, 22-inch black GMC wheels and extensive exterior customization. This particular Sierra HD was completed for one of our customers and has been sold. It is featured here as an example of the truck customization work available through Dave Sinclair Customs. Our St. Louis customs team works with customers throughout Missouri who want to personalize a GMC truck or SUV with professionally selected wheels, tires, suspension upgrades, paintwork, tint, accessories and exterior appearance packages. Vehicle: 2026 GMC Sierra 2500 HD Denali Ultimate Exterior color: Onyx Black Stock number: LT260364 Build status: Completed customer build — SOLD CONTACT DAVE SINCLAIR CUSTOMS What Was Customized on This GMC Sierra 2500 HD? This customer wanted a lifted GMC Sierra HD with a stronger stance, an all-black appearance and factory components that blended naturally with the finished build. Suspension, Wheels and Tires The foundation of this custom Sierra 2500 HD build included: 3.5-inch suspension lift 22-inch black GMC wheels Nitto Trail Grappler tires Black lug nuts Black center caps Four-wheel alignment The suspension, wheel and tire combination gave the truck a taller and more aggressive profile while maintaining a coordinated appearance throughout the build. Custom Paint and Exterior Details Several factory exterior components were painted or refinished to complement the Onyx Black exterior: Body-color grille Body-color grille border Body-color lower front fascia Body-color mirror caps Body-color door handles Body-color wheel-well covers Body-color mud guards Body-color tow hooks Body-color fog-light bezel surrounds Body-color rear GMC lettering Body-color fender decals Body-color front bumper plate Gunmetal rear GMC emblem border Gunmetal Denali and model badging Black brake calipers Illuminated front GMC emblem border These changes reduced contrasting trim and created a more unified black and gunmetal exterior. Window Tint, Trim and Accessories The finishing work included: Front-window tint matched to the rear windows 5% rear-window tint 5% rear-windshield tint Wrapped running boards Wrapped exterior window trim Tinted turn indicators Tinted wheel-well indicators GMC all-weather floor liners Puddle lamps Retractable bed cover The retractable bed cover gives the owner a convenient way to cover the cargo box while maintaining a clean, low-profile appearance. GMC Truck Customization in St. Louis, Missouri Dave Sinclair Customs provides automotive customization for GMC truck and SUV owners in the St. Louis area and throughout Missouri. Available customization options may include: Suspension lifts and leveling kits Custom wheels and tires Window tint Blackout and chrome-delete treatments Body-color exterior components Custom emblems and model decals Running boards and side steps Bed covers All-weather accessories Lighting and appearance upgrades Every project begins with the vehicle, the customer’s goals and the way the vehicle will be used. Our team can help plan a coordinated build rather than treating each upgrade as a separate addition. Available parts and customization options depend on the vehicle, model year, configuration and desired finished appearance. Dave Sinclair Customs is the customization brand exclusively from Dave Sinclair Buick-GMC in St. Louis, Missouri. See This Custom Sierra HD Can Dave Sinclair Customs Build a Similar Sierra HD? Yes. Although this exact 2026 GMC Sierra 2500 HD Denali Ultimate has been sold, Dave Sinclair Customs can discuss a similar build for another compatible GMC Sierra HD. A similar project could include a lift, black wheels, all-terrain or mud-terrain tires, painted exterior components, tinted lighting elements and a retractable bed cover. Your final build can also be adjusted to fit your preferred appearance and intended use. Our team can help customers customize vehicles such as: GMC Sierra 1500 GMC Sierra 2500 HD GMC Sierra 3500 HD GMC Canyon GMC Yukon GMC Yukon XL CONTACT DAVE SINCLAIR CUSTOMS Start Your Custom GMC Build Looking for GMC truck customization in St. Louis or elsewhere in Missouri? Complete the form below and tell us: Which vehicle you own or plan to purchase Which upgrades you are considering The overall look you want to create Your preferred phone number and email address A member of the Dave Sinclair Customs team will contact you to discuss your vehicle and the next steps for your project. START YOUR BUILD Frequently Asked Questions Is this custom GMC Sierra 2500 HD still available? No. This truck was custom-built for one of our customers and has been sold. It is shown as an example of a completed Dave Sinclair Customs project. Who customized this GMC Sierra 2500 HD? The truck was customized by Dave Sinclair Customs in St. Louis, Missouri. What size lift was installed? This Sierra 2500 HD received a 3.5-inch suspension lift. What wheels and tires were used? The truck was equipped with 22-inch black GMC wheels and Nitto Trail Grappler tires. Does the truck have a bed cover? Yes. A retractable bed cover was installed as part of the completed customer build. Can Dave Sinclair Customs recreate this truck? Of course! Our team is happy to discuss building a similar Sierra HD using compatible parts and customization options. Exact parts, fitment and availability may differ by vehicle and model year. Do I need to buy a vehicle before contacting the customs team? No. You can contact the team while shopping for a vehicle or after purchasing one. We just need to know the year, make, model, and VIN number of your vehicle whenever you contact us. Does Dave Sinclair Customs serve customers outside St. Louis? Dave Sinclair Customs is located in St. Louis, but we work with people from all over the country! Our team is happy to explain the out-of-town buying process, logistics, and answer any questions you have.

Winter can be tough on your vehicle. Cold mornings, slick roads, and changing St. Louis weather can make small vehicle issues more noticeable. Before winter arrives, it is smart to check a few key items. Start with your battery. Cold weather can make a weak battery fail sooner. If your vehicle starts slowly, clicks when you turn the key, or has dim lights, schedule a battery test. Next, check your tires. Look at tread depth, tire pressure, and uneven wear. Tire pressure often drops when temperatures fall, so your tire pressure light may come on during colder weather. Your brakes are also important before winter. If your brakes squeak, grind, shake, or feel soft, schedule an inspection. You should also check: Wiper blades Washer fluid Coolant level Headlights Brake lights Turn signals Cabin air filter Heater and defroster Good wiper blades and washer fluid are key during inclement weather, especially after snowfall. That's when the salt mixes with the melted snow on the street and makes the road spray harsh. Winter is also a good time for a Multi-Point Vehicle Inspection. This can help you understand the condition of your tires, brakes, battery, fluids, and other important items. And it will give you a full scope of what's needed, allowing you to make a more informed decision. If you want help preparing your vehicle for winter, schedule service at Dave Sinclair Buick GMC in St. Louis. Our service team can help you get ready for colder weather and changing road conditions. You can schedule your appointment here!

Your brakes are one of the most important safety systems on your vehicle. If they feel or sound different, it is worth getting them checked. One common warning sign is squeaking. Some brake noise can be minor, but new or constant squeaking may mean your brake pads need attention. Grinding is more serious. If you hear grinding when you brake, schedule service as soon as possible. Other signs your brakes may need service include: Shaking when braking A soft brake pedal A brake pedal that feels too firm Pulling to one side Longer stopping distance A brake warning light Burning smell after braking Brake pedal vibration Do not wait if your brakes feel different than normal. Brake concerns can get worse and may affect your ability to stop safely. A brake inspection can help check your brake pads, rotors, fluid, and other related parts. It can also help you understand whether you need service now or if your brakes are still in good condition. If your brakes are squeaking, grinding, shaking, or not feeling right, schedule a brake inspection at Dave Sinclair Buick GMC in St. Louis.

Summer heat can be hard on your vehicle. Before the hottest days arrive, it is smart to check a few key maintenance items. Start with your air conditioning. If your AC is not blowing cold air, feels weak, or has a strange smell, it may need service. Next, check your battery. Many drivers think battery problems only happen in winter, but heat can also wear down a battery. Your tires are important too. Hot pavement and long drives can put extra stress on tires. Check tire pressure, tread depth, and uneven wear. You should also check: Coolant level Oil life Brakes Wiper blades Washer fluid Cabin air filter Headlights and brake lights Coolant is especially important in summer because it helps your engine manage heat. If coolant is low, your vehicle may be more likely to overheat. Summer is also a good time to replace your cabin air filter if your air conditioning does not feel as strong or fresh as it used to. If you have a road trip planned, schedule a Multi-Point Vehicle Inspection before you leave. Dave Sinclair Buick GMC can help you prepare your vehicle for summer driving in St. Louis. Schedule service online today.

After a long road trip, your vehicle may need a quick check. Long drives can put extra miles, heat, and wear on your tires, brakes, fluids, and other parts. Start with your tires. Check tire pressure, tread, and look for nails, cracks, or uneven wear. Next, check your oil life. If your vehicle was already close to needing an oil change before the trip, it may be time to schedule one. You should also check: Brakes Wiper blades Washer fluid Coolant level Lights Battery Exterior damage Strange sounds or smells Pay attention to how the vehicle feels after the trip. If it shakes, pulls, brakes differently, starts slowly, or makes new noises, it is worth scheduling an inspection. A post-trip inspection can help catch small issues after a long drive. This is especially helpful after driving through heavy rain, road construction, gravel, heat, or stop-and-go traffic. If you recently returned from a road trip, schedule service at Dave Sinclair Buick GMC in St. Louis. Our team can help check your vehicle and get it ready for daily driving again.

A weak battery can leave you stuck when you least expect it. The good news is that there are often warning signs before a battery fails. One common sign is a slow engine start. If your vehicle takes longer than usual to start, your battery may be getting weak. You may also hear a clicking sound when you try to start the vehicle. This can happen when the battery does not have enough power to start the engine. Other signs of a weak battery include: Dim headlights Interior lights that look weak Electrical issues A battery warning light Trouble starting after the vehicle sits Corrosion around the battery terminals Weather can also affect your battery. Extreme heat and cold can both make battery problems show up faster. That is why battery checks are helpful before summer and winter. If your battery is several years old, it may be smart to have it tested even if the vehicle still starts. A battery test can help you know if your battery is still healthy or if replacement may be needed soon. If your vehicle is starting slower than normal, schedule a battery test at Dave Sinclair Buick GMC in St. Louis. Our service team can test your battery and charging system and help you avoid getting stuck. Click here to schedule an appointment to check on your battery or install a new one today!

If your tire pressure light is on, there is no need to panic. Your tire pressure light may also come on because of: A slow leak A nail or screw in the tire Uneven tire wear A damaged tire A tire pressure sensor issue Tires can lose air over time, and pressure can also change when the weather changes. This is very common during St. Louis temperature swings. And the fix is can be easy! But delaying the fix could lead to bigger problems down the road. Use the recommended tire pressure listed in your owner’s manual or on the driver-side door label. After filling the tires, the light may turn off after a short drive. If it stays on, it could be due to another issue and your vehicle will need to get inspected. Do not ignore a tire pressure warning. Low tire pressure can affect handling, tire wear, fuel economy, and safety. If your tire pressure light stays on, schedule tire service at Dave Sinclair Buick GMC in St. Louis. Our team can check your tire pressure, inspect for leaks, and help you decide the next step. You can click here to schedule an appointment.

Planning a road trip? Before you load the bags and hit the road, it's wise to do a quick check-up on your vehicle. A few simple checks can help you avoid delays, stress, and possible problems during your trip. Start with your tires. Check your tire pressure and look for low tread, cracks, nails, or uneven wear. You can find the correct tire pressure for your vehicle in the owner’s manual or on the driver-side door label. Next, check your oil level. If your vehicle is close to needing an oil change, it may be better to take care of it before a long drive. You should also check your brakes. If you hear squeaking, grinding, or feel shaking when you stop, schedule a brake inspection before your trip. Your battery is another important item. A weak battery can be harder to trust during long drives, hot weather, or cold mornings. If your vehicle starts slowly, a battery test is a good idea. Before leaving, also check your: Wiper blades Washer fluid Coolant level Headlights and brake lights Turn signals Air conditioning Spare tire or inflator kit, if equipped A road trip inspection can help catch small issues before they turn into bigger problems away from home. If you are planning a long drive from the St. Louis area, schedule a Multi-Point Vehicle Inspection at Dave Sinclair Buick GMC. Our service team can help you feel more prepared before your next trip. You can click here to schedule now!

The 2026 GMC Sierra 1500 SLT is a strong choice if you're in the market for a new truck that offers more comfort and a more premium features than the entry level trucks without moving all the way into the highest trims. The SLT is not the off-road-focused AT4. It is not the luxury-focused Denali. The SLT is more of a balanced premium truck. It gives you chrome styling, useful truck features, a comfortable cabin, and modern technology. Here is a simple look at what comes standard on the Sierra 1500 SLT. Sierra 1500 SLT Exterior Features The Sierra SLT has a more polished look than the lower trims. Standard exterior features include: Chrome grille header Chrome grille insert bars with gloss black accents Chrome front and rear bumpers Chrome door handles 18-inch machined aluminum wheels with Dark Grey Metallic accents LED fog lamps LED signature taillamps Rear CornerStep bumper This gives the SLT a clean, premium truck look without the full Denali appearance. MultiPro Tailgate Comes Standard on SLT One of the biggest standard features on the Sierra SLT is the GMC MultiPro Tailgate. The MultiPro Tailgate can be used in several ways. It can work like a normal tailgate, help you step into the bed, help with longer cargo, and give you a useful surface at the back of the truck. For shoppers who carry a variety of items in their truck bed often, this is one of the most practical SLT features. Sierra SLT Interior Comfort Inside, the Sierra SLT adds several comfort features that make a difference every day. Standard SLT comfort features include: 10-way power driver seat 10-way power front passenger seat Power lumbar support Heated front seats Heated steering wheel Dual-zone automatic climate control Memory settings for the driver seat and outside mirrors Auto-dimming inside rearview mirror Rainsense front wipers Carpeted front and rear floor mats The SLT also includes an up-level rear seat storage package, which helps make the back seat area more useful. Sierra SLT Technology The Sierra SLT includes the large-screen technology many shoppers are looking for. Standard technology includes: 13.4-inch diagonal touchscreen Google built-in compatibility Wireless Apple CarPlay Wireless Android Auto 12.3-inch digital driver information center SiriusXM with 360L trial Rear USB ports This setup gives the SLT a modern cabin without making the screen layout feel too complicated. Sierra SLT Capability Features The 2026 Sierra 1500 SLT comes standard with the 5.3L V8 engine and 10-speed automatic transmission. It also includes several useful truck features from the SLE trim, such as: Trailering Package Trailer brake controller Auto-locking rear differential 120V power outlets HD Rear Vision Camera This makes the SLT a good fit for shoppers who still need a real truck, not just a nice interior. To Recap The Sierra 1500 SLT is a good trim for shoppers who want: A more premium exterior A comfortable interior Heated seats and heated steering wheel A large touchscreen MultiPro Tailgate Useful truck capability A trim below Denali pricing Features can vary by model year, cab style, package, and exact vehicle. Always check the window sticker for the most accurate list of equipment. Helpful next step: View our current GMC Sierra 1500 inventory to compare available SLT trucks and package options. CLICK HERE TO SHOP NOW

This customized 2026 GMC Yukon AT4 Ultimate shows how a few changes can make a big difference. This Yukon is finished in the new Midnight Pine color and received a clean wheel and tire upgrade, tint work, brake caliper covers, and a few factory package upgrades worth highlighting. Need to Know Info Vehicle: 2026 GMC Yukon AT4 Ultimate Color: Midnight Pine Stock #: CT260361 Upgrade highlights: Wheel & Tire Upgrade, Brake Caliper Covers, Tinting This Yukon is SOLD. If you want to start your customization or you are interested in getting a quote for a similar build… Send us a message here. Wheel & Tire Upgrade The 2026 Yukon AT4 Ultimate comes standard with 20-inch wheels and all-terrain tires. For this build, those were swapped out for 22-inch VOSSEN rims and NITTO Recon Grappler tires. In the past, we have used Nitto Ridge Grappler tires on builds like this, but recently made the switch to Recon Grapplers. Both are strong tire choices, but the Recon Grappler offers a slightly quieter ride when driving on pavement. Is This Yukon Lifted? This Yukon was not lifted or leveled to fit the wheel and tire setup. In general, we do not lift or level Yukons. Tint, Trim, and Caliper Covers This Yukon also received several clean visual upgrades. Between the wheel spokes, you will see red GMC brake caliper covers. These are made of metal, powder coated, and finished with a custom GMC logo. A local vendor also handled the tint and wrap work. For this Yukon, the rear glass was tinted at 5%, the front windows were tinted, and the sky panel received a 20% ceramic tint to help reduce sunlight on bright days. Package Highlights This Yukon includes the Front Brake Kit Performance Package, which adds larger front calipers and oversized rotors for stronger, more consistent stopping power. It also includes the Cat-Back Exhaust System. This adds a stronger sound, helps increase horsepower and torque, and reduces back pressure by about 30%. Because this is an AT4 Ultimate, it also includes rear seat media screens and the unique AT4 Ultimate interior. Interested in a Similar Yukon? This Yukon is already sold, but we’re always ready to help you recreate it or start your own build. You can CLICK HERE to send our team an inquiry, questions about customizing a vehicle, or a request for a quote. Our team is happy to assist you with whatever you need. Or you can contact us directly calling 314-842-4200 or sending an email to SinclairCustoms@davesinclairauto.com. You can also browse our current custom inventory here.

Need to Know Info The Truck: 2026 GMC Sierra 2500 HD Denali Ultimate The Customization: Full Stock #: LT260078 The truck's color: Titanium Rush Metallic Highlights: Full chrome delete, wheel & tire upgrade, remote-controlled bed cover. This truck is SOLD. If you want to start your customization or you are interested in getting a quote for a similar build... Send us a message here. Wheel & Tire Upgrade This truck had its original factory rims (22 inches big) powder coated black. This upgrade also includes custom lug nuts and center caps to complete the blackout look. The tires are NITTO Trail Grappler tires which are about 33 inches big. For the HD trucks, we use Trail Grapplers instead of the Ridge Grapplers that we use for the 1500 trucks. Behind the wheels are a set of black GMC caliper brake covers. The most popular colors offered for the covers are red and black. While not a part of the Wheel & Tire upgrade, we did install a 3.5-inch lift kit from ReadyLift on this truck. The Chrome Delete This truck received a full chrome delete, which included in the Vader Chrome grille. Typically, on customized Denali Ultimate trim levels, we will leave the Vader Chrome grille alone because it's a unique color that often complements the chrome delete. In this case, we chose to paint the grille in Gun Metal Gray for a different look. Gun Metal Gray is a great complementary color for the deeper, darker paint schemes. In addition to the grille, we also painted the trim and model decals in Gun Metal Gray. For the GMC emblem, since it's 2 pieces, we have to separate those pieces and paint them separately. Since the front emblem was replaced with an accessory (more on that below), we only painted the back emblem. Unless it's a Stage 1 customization or a request from a customer, we'll paint the GMC emblem with a 2-tone look. In this case, that means Titanium Rush as the primary color and Gun Metal Gray as the trim color. We use a painted chrome delete on most chrome pieces. This means we'll remove the chrome pieces from the vehicle, paint them in house, and re-install them. The only items we don't remove for the chrome delete are the side window trim, the running boards, and the chrome tips. We work with a local vendor to vinyl wrap the side window trim and running boards. For the exhaust tips, we will wrap the vehicle in protective plastic, the paint the tips while still attached. Other Accessories + Installs Remote controlled sliding bed cover Tinted windows Tinted turn indicators Window guards All-Weather GMC floor liners Front illuminated GMC emblem (black) Build Your Own Custom GMC Truck This truck is already sold, but we're always ready to help you recreate it or start your own build. You can CLICK HERE to send our team an inquiry, questions about customizing a vehicle, or a request for a quote. Our team is happy to assist you with whatever you need. Or you can contact us directly calling 314-842-4200 or sending an email to SinclairCustoms@davesinclairauto.com. You can also browse our current custom inventory here.

Vehicle Overview Model: 2025 Ram 1500 Laramie Condition: Used (One Owner) Mileage: 1,950 miles Drivetrain: 4WD Engine: 3.0L Hurricane Twin-Turbo Output: 420 horsepower SEE MORE: CLICK HERE to view more photos, full specifications, availability and current pricing. Disclaimer Vehicle pricing, incentives, and availability are subject to change at any time. Please refer to the vehicle detail page using the link above for the most current information. Performance and Capability Twin-turbo engine designed for strong acceleration and highway merging 4WD system for year-round driving in Missouri conditions (rain, snow, uneven terrain) Equipped for towing with integrated trailer brake controller Interior Comfort and Materials Leather-appointed seating Heated front seats Ventilated front seats Heated steering wheel Memory seat settings for multiple drivers Technology and Connectivity 12-inch touchscreen display Built-in navigation system Large-format interface designed for visibility and ease of use Smartphone connectivity and media controls Truck Utility Features Spray-in bedliner for durability and cargo protection Cargo management system with tie-downs Designed for both daily driving and jobsite use Ownership Highlights One previous owner Low mileage relative to model year Remaining factory warranty