Medium & Heavy Duty Mechanic

Tri-County Truck Centers - Warren
Warren, MI

Job Description

Job Description

WHAT YOU'LL DO

In this role, you will:

  • Diagnose — identify mechanical, electrical, and powertrain issues on light, medium, and heavy-duty trucks and buses using diagnostic tools and equipment.
  • Repair — perform hands-on repairs to diesel engines, powertrains, electrical systems, and related components following manufacturer specifications.
  • Maintain — conduct scheduled preventive maintenance to keep fleet vehicles operating safely and efficiently.
  • Document — accurately complete repair orders, warranty documentation, and labor operation records in accordance with manufacturer policies and procedures.
  • Inspect — perform thorough pre- and post-repair inspections to verify quality and safety of all work performed.
  • Collaborate — work alongside fellow technicians and service advisors to deliver timely, high-quality results for our customers.

QUALIFICATIONS

Required:

  • At least one year of hands-on experience as a diesel technician — dealership or fleet experience preferred.
  • Michigan State Certifications in Heavy Duty Truck (Trainee Permit accepted).
  • Knowledge of diesel engine repair and maintenance, powertrains, and electrical systems.
  • Strong diagnostic skills and attention to detail.
  • Good verbal, written, and computer skills.
  • Demonstrated good character and work ethic.
  • Ability to follow manufacturer's policies and procedures for labor operations, time, and repair order documentation when performing warranty repairs.
  • Must possess your own tools.
  • Chauffeur's License required (CDL a plus).
  • Must be able to reliably commute to one of our Southeast Michigan locations — on-site position.

Preferred (Nice to Have):

  • ASE, Navistar, or Cummins Certifications.
  • Previous dealership or fleet maintenance experience.
  • Familiarity with International Trucks diagnostic systems or platforms such as ServiceMaxx.

Posted 2026-06-17

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