Diesel Technician III

Job Description Job Title: Diesel Technician IIIDepartment:Truck Service PointReports to: Shop ForemanEffective Date:05.06.2026Position OverviewThe Diesel Truck Technician III is a highly skilled, senior-level technician responsible for performing complex diagnostics and advanced repairs on diesel-powered trucks and related equipment. This role serves as a technical expert within the shop, providing leadership, mentoring junior technicians, and ensuring high-quality repair standards. Advanced Diagnostics & Repair* Perform expert-level diagnosis on complex mechanical, electrical, aftertreatment, and driveline systems.* Troubleshoot and repair:o Diesel engines o Aftertreatment & emissions systems (DPF, DOC, SCR) o Multiplexing & CAN bus systems o High-level electrical faults and communication issues o Transmission and driveline components* Conduct engine performance testing, calibrations, and software updates using OEM tools.Major Component RepairPerform engine component replacement (turbochargers, injectors, EGR systems, pumps).Replace major assemblies such as transmissions, differentials, and axles.Execute advanced brake, suspension, and steering repairs.Preventative Maintenance & ComplianceConduct and verify all levels of PM (A/B/C) including advanced inspection points.Perform DOT inspections and ensure full regulatory compliance.Identify root causes of recurring fleet issues and recommend corrective measures.Leadership, Training & Technical SupportMentor and train Technicians I and II on best practices, troubleshooting, and repair methods.Serve as a technical resource for complex job assignments.Support shop leadership in quality control.Documentation & Reporting* Document repairs, diagnostics, and parts usage thoroughly in maintenance systems.* Contribute to procedural improvements and standard operating practices.Safety & Shop StandardsLead by example in following all safety protocols and PPE requirements.Identify hazards and take corrective action to maintain a safe work environment.Ensure proper use and care of shop tools, equipment, and diagnostic devices.Skills and Requirements Required QualificationsMinimum 5+ years of experience in diesel truck or heavy equipment repair.Advanced diagnostic skills with OEM software (e.g., Cummins INSITE, Detroit DiagnosticLink, Navistar).Strong understanding of electrical systems, aftertreatment systems, and data networks.Ability to read complex wiring diagrams, schematics, and service manuals.Valid driver's license.Ability to lift 50+ lbs. and perform physically demanding work.Preferred QualificationsFormal diesel technology education or equivalent experience.Multiple ASE Medium/Heavy Truck (T-Series) certifications, or ASE Master certified.OEM-specific training or certifications (Cummins, Detroit, PACCAR, Navistar, Allison).Experience training or mentoring other technicians.Strong communication and leadership skills.CDL Class A or BWork EnvironmentShop environment with exposure to noise, fumes, and heavy machinery.Requires standing, bending, lifting, and use of heavy tools.May require occasional outdoor work depending on facility setup.SalaryPay Range: $36.00 - $43.00 per hour , based on experience, certifications, and shift.The above information on this description has been designed to indicate the general nature and level of work performed by associates within this classification. It is not designed to contain or be interpreted as a comprehensive inventory of all duties, responsibilities, and qualifications required of associates assigned to this job.Schedule: Monday-Friday, 10:00 AM-6:30 PM