Diesel Mechanic – Diagnostics & Performance Upgrades

Markent Personnel; Harbor Beach (MI); On-site; USD 48,000 - 62,000; Full time

Benefits offered by this job

Health Insurance

PTO

401k Match

Relocation lump sum

Job summary

Markent Personnel in Harbor Beach, MI seeks an experienced Diesel Mechanic to join the service department. You will diagnose and repair diesel trucks with a focus on Duramax, supporting a shop with its own machine shop and custom parts.

Responsibilities include major repairs, diagnostics, performance modifications, and quality control from inspection to release. 3+ years in diesel repair and strong electronic/mechanical skills are required.

Qualifications

• 3+ years of experience diagnosing and repairing diesel trucks, vehicles, or heavy equipment.
• Strong diagnostic ability across mechanical and electronic systems.
• Experience with R&R for engines/transmissions.
• Certifications are preferred, but not required.

Responsibilities

• Diagnose complex mechanical, electrical, fuel, air, cooling, and drivability issues.
• Perform major repairs, preventive maintenance, component installations, and approved performance modifications.
• Develop repair strategies using diagnostic data, service information, technical specifications, and hands-on experience.
• Identify root causes instead of replacing parts based on symptoms.
• Own assigned jobs from initial inspection through testing, documentation, and final release.
• Evaluate additional findings, explain recommended work, and identify when customer authorization is required.
• Perform final quality-control checks and confirm that completed work meets DHD standards.
• Prevent repeat failures and comebacks through disciplined diagnosis, installation, and validation.
• Provide technical guidance to other technicians when needed.
• Help improve shop procedures, diagnostic methods, workflow, and quality standards.
• Maintain accurate records of findings, labor, test results, parts, approvals, and completion status.

Skills

Diesel diagnostics

Mechanical skills

Electrical systems

Diagnostic problem-solving

Tools

Diagnostic equipment

Shop equipment

Job description

Markent Personnel in Harbor Beach, MI seeks an experienced Diesel Mechanic to join the service department. You will diagnose and repair diesel trucks with a focus on Duramax, supporting a shop with its own machine shop and custom parts.

Responsibilities include major repairs, diagnostics, performance modifications, and quality control from inspection to release. 3+ years in diesel repair and strong electronic/mechanical skills are required.