For medium and heavy-duty trucks, like semi-trucks, commercial work vehicles, and service trucks, maintaining a well-functioning engine is essential to avoid costly downtime and ensure safe operation. At Sandi Auto & Truck Repair, we specialize in engine diagnostics for medium and heavy-duty trucks in Willow Springs, IL. Our expert technicians use advanced diagnostic equipment to pinpoint engine issues quickly and accurately, helping you get back on the road with minimal interruption.