Diesel Fleet Mechanic: Trucks & Trailers Expert

Warehouse Services, Inc.; Wilmington (IL); On-site; USD 52,000 - 76,000; Full time

Benefits offered by this job

Free Life Insurance

Profit Sharing

Paid Vacation, Holidays and Sick Time

Ability for professional growth

Safety glasses reimbursement

Job summary

Warehouse Services, Inc. is seeking an experienced Trailer and Truck Mechanic in Wilmington, IL. You will diagnose, repair, and maintain diesel engines and trailer systems, and perform DOT inspections to ensure regulatory compliance.

The role requires familiarity with air brakes, hydraulics, and electronic diagnostics, plus a clean driving record. Benefits include weekly pay and opportunities for growth, with safety and quality standards emphasized.

Qualifications

• Minimum 2–3 years of experience in heavy truck and trailer repair.
• Strong understanding of diesel engines, air brake systems, and trailer repair.
• Ability to read and interpret maintenance manuals, schematics, and work orders.
• Proficient in the use of diagnostic software and electronic testing equipment.
• Strong problem-solving skills and attention to detail.
• Ability to work independently and as part of a team.
• Valid driver's license required; CDL preferred.
• ASE or equivalent certification preferred.
• Experience and certification with compressed natural gas (CNG) preferred

Responsibilities

• Perform diagnostics, maintenance, and repairs on diesel engines, trailers, and related systems.
• Conduct DOT inspections and ensure compliance with all federal, state, and local regulations.
• Troubleshoot and repair air brake systems, suspension, steering, and hydraulic systems.
• Inspect and repair electrical wiring, lighting systems, and electronic control units.
• Perform preventive maintenance (PMs) including oil changes, filter replacements, lubrication, and tire service.
• Diagnose and repair trailer components such as doors, floors, landing gear, and panels.
• Use diagnostic tools and software to identify issues with engines, transmissions, and after-treatment systems (DEF, DPF).
• Maintain accurate maintenance records and service logs in the company's maintenance management system.
• Operate shop tools, welding equipment, and diagnostic instruments safely and efficiently.
• Maintain a clean, safe, and organized work area in accordance with OSHA and company safety standards.

Skills

Diesel engines

Air brake systems

Diagnostics software

Troubleshooting

Attention to detail

Teamwork

Valid driver's license

CDL preferred

ASE certification preferred

CNG experience preferred

Tools

Diagnostic tools

Shop tools

Job description

Warehouse Services, Inc. is seeking an experienced Trailer and Truck Mechanic in Wilmington, IL. You will diagnose, repair, and maintain diesel engines and trailer systems, and perform DOT inspections to ensure regulatory compliance.

The role requires familiarity with air brakes, hydraulics, and electronic diagnostics, plus a clean driving record. Benefits include weekly pay and opportunities for growth, with safety and quality standards emphasized.