Truck Diagnostics

When your semitruck isn’t performing as it should, you can trust Ruiz Diesel Service LLC to identify and resolve the problem efficiently. We take every possible step to ensure your diagnostic experience is fast, accurate, and stress-free.

Our mission is to provide professional diagnostic services for all semitrucks while minimizing downtime and ensuring safe operation.

Our experienced team uses state-of-the-art diagnostic tools to pinpoint electrical, engine, and mechanical issues, giving you a clear understanding of what needs to be repaired. Whether it’s a minor software glitch or a major engine concern, we handle it with precision and care.

Services Included

Engine Diagnostics

We use advanced diagnostic tools to quickly detect and troubleshoot engine performance issues. From fuel system checks to sensor calibrations, our technicians ensure your truck’s engine runs smoothly and efficiently.

Electrical System Checks

Our experts thoroughly inspect your truck’s electrical components — including lights, sensors, alternators, and wiring — to identify faults that can impact safety or performance. We ensure all systems are working reliably.

Software & ECU Diagnostics

We perform complete testing and resetting of your truck’s onboard software and Engine Control Unit (ECU). This ensures accurate readings, resolves check-engine lights, and enhances overall truck performance.

Transmission & Clutch Checks

Smooth gear shifting is crucial for every driver. Our team checks, adjusts, and repairs transmission and clutch systems to prevent breakdowns, reduce wear, and maintain power efficiency.

Mobile Diagnostic Services

Can’t make it to the workshop? No problem. Our mobile diagnostic team comes directly to your location with all the necessary tools to inspect, identify, and fix issues — saving you valuable time and towing costs.