Class 8 Diesel Truck & Trailer Mechanic – Overtime

Al-Warren-Oil-Company,-Inc.; Chicago (IL); On-site; USD 39,000 - 52,000; Full time

Benefits offered by this job

Paid time off

Holidays

Vacations

401(k) with company match

Health, dental, and vision insurance

HSA contributions

Company-paid life insurance

Short-term and long-term disability

Job summary

Al Warren Oil is seeking a dependable Truck & Trailer Mechanic to join our Chicagoland maintenance team. You will perform preventive maintenance, troubleshoot, and repair Class 8 trucks, tractors, tanker trailers, and related equipment to keep fleets running safely and reliably.

Ideal candidates bring experience with heavy-duty repair, diagnostic skills, and a commitment to quality. This on-site role supports DOT inspections and maintenance operations for a family-owned company dedicated to

Qualifications

• Experience repairing heavy-duty trucks or trailers or relevant diesel technician training.
• Strong troubleshooting skills and ability to use diagnostic equipment.
• Familiarity with fleet maintenance practices and DOT inspection requirements.

Responsibilities

• Inspect, diagnose, maintain, and repair heavy-duty trucks and trailers.
• Troubleshoot diesel engines, electrical systems, air brakes, suspension, steering, and drivetrain components.
• Repair trailer lighting, wiring, ABS systems, wheel seals, and related components.
• Complete scheduled maintenance and identify developing equipment problems.
• Perform safety inspections within your qualifications and support DOT inspection readiness.
• Document repairs, parts used, and follow-up maintenance needs accurately.
• Communicate equipment concerns with drivers, shop personnel, and operations.
• Perform authorized equipment moves and road tests when properly licensed.
• Maintain a clean, organized, and safe work area.

Skills

Heavy-duty truck repair

Troubleshooting

Fleet maintenance familiarity

DOT inspections experience

CDL preferred

Own basic tools

Tools

Diagnostic equipment

Welding

Fabrication

Job description

Al Warren Oil is seeking a dependable Truck & Trailer Mechanic to join our Chicagoland maintenance team. You will perform preventive maintenance, troubleshoot, and repair Class 8 trucks, tractors, tanker trailers, and related equipment to keep fleets running safely and reliably.

Ideal candidates bring experience with heavy-duty repair, diagnostic skills, and a commitment to quality. This on-site role supports DOT inspections and maintenance operations for a family-owned company dedicated to