Diesel Technician – Heavy Duty Truck

Overview

We are seeking an experienced Diesel Technician to join a well-established family-oriented heavy-duty truck service team serving the transportation industry across Wisconsin and Illinois for over 40 years.

This is a hands-on lead-level technician role for someone who enjoys independent work advanced diagnostics and full-scope repairs on commercial trucks and buses. Youll work in a small-shop environment with minimal supervision strong team support and a focus on quality workmanship and continuous technical development.

Key Responsibilities

• Diagnose and repair heavy-duty diesel trucks and commercial vehicles (all makes/models)
• Perform engine transmission driveline differential brake suspension and steering repairs
• Complete major component work (injectors pistons liners cylinder heads bearings clutches fan hubs etc.)
• Use diagnostic software/tools to troubleshoot electrical and mechanical issues
• Perform road tests to verify repairs and ensure safety compliance
• Document repair orders inspection findings and recommended services
• Maintain compliance with dealership OEM and safety standards
• Support junior technicians through mentorship (as needed)
• Participate in ongoing OEM and technical training programs

Required Qualifications

• 5 years of hands-on experience as a diesel technician or heavy-duty truck mechanic
• Strong diagnostics experience using computer-based scan tools
• Proven electrical troubleshooting skills (wiring sensors charging/starting systems ECMs)
• Extensive experience with brakes (air & hydraulic) suspension driveline and engine systems
• Ability to perform major repairs and overhauls independently
• Must own personal toolset required for heavy-duty repair work
• Valid drivers license with a clean driving record
• Ability to obtain a CDL (if not already held)
• High school diploma or equivalent (technical/vocational training preferred)

Preferred Qualifications

• ASE Certification and/or OEM training
• EPA 608/609 certification
• Experience with International trucks Cummins engines or other OEM platforms
• Background in dealership or fleet maintenance environments
• Experience mentoring or acting as a lead technician

Work Environment & Benefits

• Small family-style shop (no micromanagement)
• Strong technician-focused culture with respect for skilled labor
• No nights or weekends consistent weekday schedule
• Tool and work boot allowance
• Ongoing OEM training and an internal technical development center
• Regular training sessions (monthly or bi-monthly)
• Opportunity to grow into a lead or mentorship role