Modern heavy duty trucks rely on complex electrical and computer systems to control everything from engine performance and emissions systems to lighting, charging, braking, and communication between components. At Warrior Diesel, we provide advanced electrical diagnostics and repair services for heavy duty tractor trailers and commercial diesel trucks, helping identify issues quickly and accurately to minimize downtime.

Our electrical and diagnostic services include full system scanning, check engine light diagnostics, wiring repair, battery and charging system testing, alternator and starter replacement, sensor diagnostics, trailer electrical repair, lighting issues, ABS diagnostics, and ECM troubleshooting. Whether your truck is dealing with intermittent electrical problems, communication faults, no-start conditions, or recurring warning lights, we use professional diagnostic equipment to pinpoint the source of the issue instead of relying on guesswork.