Diesel Mechanic – Class 8 Trucks & Trailers

Al Warren Oil Company•Chicago, IL

About The Position

Al Warren Oil is seeking a dependable Truck & Trailer Mechanic to join its Chicagoland maintenance team. The family-owned fuel and lubricant company relies on skilled technicians to keep its equipment safe, reliable, and ready to serve customers. The position performs preventive maintenance, troubleshooting, and repairs on Class 8 diesel trucks, tractors, tanker trailers, and related equipment. The successful candidate takes pride in quality repairs and enjoys solving mechanical problems.

Requirements

  • Experience repairing heavy-duty trucks or trailers, or relevant diesel technician training.
  • Strong troubleshooting skills and the ability to use diagnostic equipment.
  • Familiarity with fleet maintenance practices and DOT inspection requirements.
  • Valid driver’s license.
  • Own basic mechanic tools.
  • Dependability, attention to detail, and the ability to work independently and with a team.
  • Ability to perform essential job duties, with or without reasonable accommodation.

Nice To Haves

  • Class A CDL preferred.
  • Tanker trailer experience, welding, and fabrication skills are a plus.

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 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.

Benefits

  • Competitive hourly pay with overtime opportunities.
  • Paid time off, holidays, and vacations.
  • Empower 401(k) retirement program with company matching beginning on day one.
  • Blue Cross Blue Shield medical and prescription coverage, plus dental and vision benefits.
  • Employer HSA contributions up to $2,400.
  • Company-paid life insurance.
  • Supplemental life insurance and optional short- and long-term disability coverage.
  • Company-paid training.
  • Boot and glove reimbursement program.
  • Annual tool allowance program.
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