Diesel Technician II at Unlimited Carrier Inc – Bolingbrook, Illinois

Job Title: Diesel Technician II Department: Truck Service Point

Reports to: S Shop Foreman Effective Date: 04/07/26

Position Overview

The Diesel Truck Technician II is a mid‑level technician responsible for performing intermediate repairs, diagnostics, and preventative maintenance on diesel-powered trucks and related fleet equipment. This role requires solid technical competency, the ability to work independently on most repairs, and the capability to assist lower-level technicians with training and troubleshooting.

Key Duties and Responsibilities

Responsibilities include but are not limited to:

Diagnostics & Repair

• Perform intermediate-level diagnosis and repair of mechanical, electrical, and emission related issues.

• Troubleshoot and repair:

o Diesel engines

o Aftertreatment systems (DPF, DOC, SCR)

o Electrical and charging systems

o Cooling systems

o Brake and air systems

o Suspension and steering components

• Use diagnostic tools and OEM software to identify root-cause issues.

• Perform component replacements, adjustments, and calibrations as required.

Preventative Maintenance & Inspections

• Perform and sign off on PM A/B/C services.

• Conduct DOT-level inspections and ensure equipment meets regulatory compliance.

• Identify and document potential failures or safety hazards during PMs.

Documentation & Reporting

• Accurately document all work orders, labor hours, parts used, and diagnostic findings.

• Maintain clear communication with supervisors regarding equipment status.

• Provide repair recommendations and improvement suggestions for recurring issues.

Safety & Shop Standards

• Follow all company safety programs and PPE requirements.

• Maintain a clean, organized, and hazard-free work environment.

• Properly use shop equipment, lifts, and specialty tools.

Team Support & Leadership

• Assist Diesel Technician I personnel with troubleshooting and hands-on training.

• Provide guidance on proper repair procedures and shop best practices.

• Support overall shop efficiency and workflow.

Skills and Requirements

Required Qualifications

• High school diploma or GED.

• 2–4 years of experience as a diesel or automotive technician.

• Proficiency with diagnostic tools and repair procedures.

• Ability to read schematics, wiring diagrams, and technical manuals.

• Valid driver’s license.

• Ability to lift 50+ lbs and perform physically demanding tasks.

Preferred Qualifications

• Completion of a diesel or automotive technical program.

• OEM training (e.g., Cummins, Detroit, PACCAR, Navistar) is highly desirable.

• ASE Medium/Heavy Truck certifications (T-Series).

• Demonstrated ability to train or mentor junior technicians.

• CDL Class A or B

Work Environment

• Shop setting with exposure to noise, fumes, moving vehicles, and heavy machinery.

• Requires physical activity including standing, kneeling, climbing, and lifting.

• May require occasional outdoor work depending on facility setup.

Salary

Pay Range: $28.00-$36.00 per hour, depending on experience, certifications, and shift assignment