Senior Diesel Mechanic

Job Title:

Senior Diesel Mechanic

Location: Madison, Wisconsin

Company: I-State Truck Center

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. Our Madison location offers a dynamic environment for skilled tradespeople to grow their careers. The ideal candidate will have a strong background in diesel engine repair, diagnostics, and maintenance, with a focus on delivering high-quality service to ensure customer satisfaction.

This role offers competitive wages and opportunities for career growth in a dynamic work environment.

Key Responsibilities:

• Diagnose and Repair
  :
  Troubleshoot complex mechanical, hydraulic, electrical, and electronic systems on heavy-duty diesel trucks using advanced diagnostic tools, schematics, and technical manuals (e.g., Cummins Insite, Detroit Diesel Diagnostic Link).
• Perform Maintenance
  :
  Conduct routine preventive maintenance, including oil changes, filter replacements, tire inspections, brake adjustments, and chassis lubrication to ensure truck reliability and compliance with federal and state regulations.
• Component Replacement
  :
  Replace or repair critical components such as diesel engines, transmissions, differentials, turbochargers, or brake systems.
• Welding and Fabrication
  :
  Perform minor welding, cutting, or fabrication tasks to repair or modify truck frames, bodies, or components as needed.
• Documentation
  :
  Complete detailed service reports, document parts used, and record maintenance activities for warranty, billing, DOT compliance, and inventory purposes.
• Customer Interaction
  :
  Communicate with fleet managers or drivers to explain repairs, provide maintenance recommendations, and ensure satisfaction with service.
• Safety Compliance
  :
  Adhere to OSHA, DOT, and company safety regulations, maintain a clean work environment, and follow manufacturer protocols.
• Tool and Equipment Management
  :
  Maintain and organize tools, service vehicles, and diagnostic equipment to ensure operational readiness for field service.

Qualifications:

• Education
  :
  High school diploma or equivalent; technical diploma or certification in diesel mechanics or heavy-duty truck repair preferred.
• Experience
  : 2-5 years of experience repairing and maintaining heavy-duty diesel trucks (e.g., Kenworth, Peterbilt, Freightliner, Volvo, or Mack).
• Skills
  :
  • In-depth knowledge of diesel engines, hydraulic systems, electrical systems, and electronic controls (e.g., ECM diagnostics).
  • Proficiency with diagnostic tools (e.g., Cummins Insite, Detroit Diesel Diagnostic Link, or OEM software) and hand/power tools.
  • Ability to read and interpret technical manuals, wiring diagrams, and hydraulic schematics.
  • Strong problem-solving skills and attention to detail.
  • Basic welding and fabrication skills (preferred).
  • Excellent communication and customer service skills for interacting with fleet managers and drivers.
• Certifications
  :
  Manufacturer-specific training (e.g., Cummins, Detroit Diesel, Paccar) or ASE Heavy Duty Truck certifications (e.g., T2-T8 series) are a plus.
• Physical Requirements
  :
  Ability to lift heavy parts (up to 50-75 lbs.), work in confined spaces, and perform tasks in various weather conditions.
• Driver's License
  :
  Valid driver s license required; CDL with appropriate endorsements strongly preferred.

Employee Benefits:

• Competitive Wages
• Uniforms provided
• Tool program available
• Tuition assistance for educational and ongoing career growth
• Health, dental and vision coverage begins on the first day of the following month
• Paid Time Off (PTO) starts accruing day one of full-time employment
• Holidays and floating holidays per year
• 401(k) with company matching
• Long Term Disability, Short Term Disability, Life Insurance provided
• Healthiest You (virtual health care) paid by Interstate
• PPE Reimbursement for safety glasses and safety boot reimbursement
• Pet Insurance
• Employee Discounts on products and services
• Paid Employee Assistance Program (24/7 guidance)
• Paid Health and Well-being screening for employees and their spouse

Note:

This job description is not designed to cover every duty or responsibility and duties may change at any time with or without notice.

Equal Opportunity

Employer:

Interstate Companies is an Equal Opportunity Employer, and we encourage all qualified and interested persons to apply for this position by submitting a resume for consideration.

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