Modern trucks require advanced diagnostic tools to quickly identify and solve problems before they become expensive repairs. Pete Truck Parts carries a complete selection of semi truck diagnostic tools, including code readers, diagnostic software, sensors, and troubleshooting devices designed for heavy-duty use. Our tools are built to interface with today’s complex truck systems — engines, transmissions, emissions controls, and more — helping drivers, technicians, and fleet managers catch issues early and avoid costly downtime. Whether you’re maintaining a single rig or servicing an entire fleet, our diagnostic solutions deliver the accuracy, durability, and ease of use you need. Trusted by professional diesel mechanics and owner-operators across the country, Pete Truck Parts provides diagnostic tools that keep trucks running stronger, longer.