Diesel Technician Heavy Duty Trucks

Job Title: Experienced Diesel Technician – Heavy-Duty Trucks
Location: Sheboygan, WI (Onsite)
Schedule: Full-Time | Monday–Friday | 1st Shift (8:00 AM–5:00 PM or 7:30 AM–4:30 PM) | No weekends or nights

Job Overview

We are seeking an experienced Diesel Technician to join a respected, long-established heavy-duty truck service team serving Wisconsin and Illinois for over 40 years. This is a great opportunity for a skilled technician who wants a stable first-shift schedule, strong team culture, ongoing OEM training, and the ability to take ownership of repair work from diagnosis to completion.

You will work on all-makes commercial trucks and buses, performing advanced diagnostics, repairs, and preventive maintenance. Senior technicians may also mentor junior team members and contribute to maintaining high service standards.

Key Responsibilities

• Perform repairs as outlined on work orders with accuracy and efficiency
• Diagnose and troubleshoot mechanical, electrical, and performance issues
• Repair and overhaul diesel engines, transmissions, differentials, and driveline systems
• Service brake systems (air and hydraulic), steering, suspension, and HVAC systems
• Install and replace components including injectors, pistons, liners, camshafts, bearings, clutches, and more
• Use diagnostic software/tools to identify and resolve issues
• Conduct road tests to verify repairs and vehicle performance
• Document all work performed according to company and industry standards
• Follow all safety procedures and maintain a clean, compliant work environment
• Support continuous improvement and participate in ongoing technical training

Required Qualifications

• 5+ years of hands-on experience with diesel engines and heavy-duty trucks
• Strong diagnostic and troubleshooting skills (mechanical and electrical systems)
• Experience with engines, transmissions, differentials, brakes, steering, and driveline systems
• Ability to use diagnostic computers/software
• Must own a complete professional toolset
• Valid driver's 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 certifications and/or OEM training
• EPA 608/609 certification
• Experience with International trucks or Cummins engines
• Prior dealership or fleet maintenance experience

What We Offer

• Stable Monday–Friday schedule (no nights or weekends)
• Small, team-oriented shop environment (no micromanagement)
• Family-like culture with strong technician respect and support
• Tool and work boot allowance
• Ongoing OEM-certified training and internal development programs
• Opportunity to work independently and grow into a lead technician role

Work Environment

• Small, highly skilled technical team (lean shop structure)
• Focus on quality repairs, efficiency, and continuous improvement
• Mentorship opportunities for senior technicians

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