Uncompromising Quality
We use premium materials at every level — from the Cummins X15 powertrain to the diamond-stitched leather in the cabin. If it goes in a GH-5, it has to earn its place.
About Semi Casual Custom Trucks
We build trucks that stand out — on the highway, at the show, and in your driveway.
Our Story
Semi Casual Custom Trucks was born out of a simple question: why should you have to choose between a truck that works and a truck that impresses? For too long, heavy-duty truck owners have had to accept the idea that capability and comfort are opposites. We don't believe that.
The GH-5 Grand Hauler is our answer — a fully custom luxury conversion built on the Peterbilt 589 platform, delivering the proven towing capability of a Class 8 semi with an interior that rivals any luxury SUV on the market. We started with a blank canvas and a commitment to building something the industry hadn't seen before.
The Build Philosophy
Every GH-5 begins with a conversation. We want to understand how you plan to use your truck — whether that's daily towing, long-haul road trips, livestock or horse trailer work, or simply pulling the camper to its next adventure. That conversation shapes every decision we make in the build.
We have multiple pre-configured packages to help streamline your next truck. Once we understand your vision, we can spec the build from the ground up: engine option, transmission, interior package, exterior finish, lighting, chrome, and any specialty add-ons. Our team handles every step of the process, and we keep you informed along the way.
What Sets Us Apart
Transparent Process
Custom truck builds can be stressful. We eliminate the guesswork by communicating openly throughout the build — from spec sheet to delivery, you'll know exactly where your truck stands.
Nationwide Warranty
Your GH-5 is backed by a nationwide warranty. We stand behind our builds and are committed to supporting our customers wherever they are in the country.
Nationwide Warranty
Every GH-5 that leaves our shop is covered by a comprehensive nationwide warranty. We build trucks that are meant to last — and we back that up. Contact us for full warranty details on your build.
Ready to Talk?
If you've been thinking about what a custom luxury truck could look like for your life, we'd love to have that conversation. Tell us what you're looking for — we'll tell you what's possible.