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Position Details & Responsibilities

A long-standing equipment and truck solutions provider is seeking a Diesel Master Mechanic to join its service team in the Los Angeles area. This role is focused on advanced diagnostics and repair of heavy-duty diesel truck chassis systems, supporting a high-volume shop with a strong backlog of work.

This is a hands-on position for a highly skilled technician who enjoys solving complex mechanical and electrical issues and being a go-to expert within the shop.

Responsibilities

• Diagnose and repair complex diesel engine systems including fuel systems, turbochargers, and emissions components
• Perform advanced troubleshooting on transmissions, differentials, and full drivetrain systems
• Diagnose and repair electrical systems, wiring, sensors, and multiplex networks
• Complete brake system repairs including ABS, air systems, and related components
• Repair and rebuild suspension, steering, and air ride systems
• Lead diagnostics on challenging jobs and provide guidance to other technicians when needed
• Perform DOT inspections and ensure compliance with safety and regulatory standards
• Work closely with service advisors to estimate repairs, timelines, and scope of work
• Maintain accurate documentation and stay current with evolving diagnostic tools and technologies
• Occasionally assist with mentoring less experienced technicians

For more information on this position or the full job description, please contact Shawn Ramirez at Herk & Associates:

ShawnR@herkandassociates.com 

Qualifications

• 7–10+ years of experience as a heavy-duty diesel technician
• Strong expertise in diesel chassis systems including engines, drivetrain, electrical, and braking systems
• Advanced diagnostic capabilities using OEM software
• Ability to read wiring diagrams, schematics, and technical documentation
• ASE certifications (T-Series) preferred
• CDL (Class A or B) and manufacturer certifications are a plus
• Strong problem-solving skills with the ability to handle complex repair scenarios
• Must provide own tools
• Valid driver’s license with clean driving record

Additional Details

• Monday–Friday schedule with optional overtime
• Shop-based role (no field service) supporting a team of approximately 20 technicians
• Focus on diesel chassis work, with opportunities to assist in other areas based on experience
• High volume of work with long-term stability and growth potential