Diesel Mechanic – Class 8 Trucks & Trailers

Al Warren Oil is seeking a dependable Truck & Trailer Mechanic to join our Chicagoland maintenance team. As a family-owned fuel and lubricant company, we depend on skilled technicians to keep our equipment safe, reliable, and ready to serve our customers.

This position performs preventive maintenance, troubleshooting, and repairs on Class 8 diesel trucks, tractors, tanker trailers, and related equipment. If you take pride in quality repairs and enjoy solving mechanical problems, we want to hear from you.

• →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.

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