Senior Diesel Mechanic

Job Overview Senior Diesel Mechanic at I-State Truck Center in Madison, Wisconsin. I-State Truck Center is a leading provider of heavy-duty truck sales, parts, and service in the Midwest, specializing in Freightliner, Western Star, and Detroit Diesel products. We serve commercial fleets, owner-operators, and businesses across Wisconsin and beyond. The Madison location offers a dynamic environment for skilled tradespeople to grow their careers. We offer competitive wages and opportunities for career growth in a dynamic work environment. Key Responsibilities Diagnose and repair complex mechanical, hydraulic, electrical, and electronic systems on heavy-duty diesel trucks using advanced diagnostic tools and technical manuals. Perform routine preventive maintenance: oil changes, filter replacements, tire inspections, brake adjustments, and chassis lubrication to ensure reliability and regulatory compliance. Replace or repair critical components such as diesel engines, transmissions, differentials, turbochargers, and brake systems. Perform minor welding, cutting, or fabrication tasks to repair or modify truck frames, bodies, or components. Complete detailed service reports, document parts used, and record maintenance activities for warranty, billing, DOT compliance, and inventory purposes. Communicate with fleet managers or drivers to explain repairs, provide recommendations, and ensure satisfaction. Adhere to OSHA, DOT, and company safety regulations; maintain a clean work environment. Maintain and organize tools, service vehicles, and diagnostic equipment to ensure operational readiness for field service. Qualifications High school diploma or equivalent; technical diploma or certification in diesel mechanics or heavy-duty truck repair preferred. 2-5 years of experience repairing and maintaining heavy-duty diesel trucks such as Kenworth, Peterbilt, Freightliner, Volvo, or Mack. In-depth knowledge of diesel engines, hydraulic systems, electrical systems, and electronic controls (e.g., ECM diagnostics). Proficiency with diagnostic tools such as Cummins Insite, Detroit Diesel Diagnostic Link, or other advanced systems. Equal Opportunity Employer We are an equal opportunity employer. We welcome minorities, females, veterans, individuals with disabilities, and people of all sexual orientations and gender identities. #J-18808-Ljbffr Interstate Power Systems