Diesel Mechanic - Flexible Schedule & Advanced Diagnostics

Energy Jobline ZR; Rochelle (IL); On-site; USD 48,000 - 72,000; Full time

Benefits offered by this job

Probationary period benefits after 90‑

Insurance premium split 50/50

Flexible schedule

Job summary

Energy Jobline ZR is seeking a Standard Diesel Mechanic to perform repair and maintenance on over-the-road semi-trucks, trailers and diesel vehicles in Rochelle, IL.

The role emphasizes diagnostics, preventive maintenance, and component replacement (Cummins/Detroit Diesel, Freightliner, Carrier, Thermo King). ASE Diesel Certification, CDL, and strong diagnostic skills are required; owning tools is essential.

Qualifications

• Degree or Diploma in Mechanical or Automotive Engineering (Optional).
• ASE Diesel Certification.
• Valid driver’s license (CDL) required.
• Aptitude for mathematics and science.
• Advanced knowledge of diesel engine components.
• Good IT and diagnostic skills with Cummins/Freightliner systems.
• Physically capable of lifting 100–150 lbs.
• Proficient with maintenance and repair tools.
• Attention to detail.
• Good interpersonal and communication skills.
• Must own tools for the trade.

Responsibilities

• Run diagnostic tests on trucks, including refrigeration systems.
• Analyze diagnostic test results.
• Replace steering mechanisms, transmissions, and braking systems.
• Check vehicle lighting systems.
• Test drive vehicles to gauge performance.
• Perform preventative maintenance on semi-trucks.
• Maintain detailed service records.
• Follow inspection procedure checklists.
• Ensure shop cleanliness.
• Work on Cummins, Detroit Diesel, Freightliner, Carrier, and Thermo King units.
• Limited trailer body work and suspension work.
• Weld aluminum and iron.

Skills

Diagnostic skills

Tools proficiency

Math & science

Attention to detail

Interpersonal skills

Communication skills

Tool ownership

Education

ASE Diesel Certification

Mechanical/Automotive Engineering degree or diploma

Tools

Cummins diagnostic systems

Freightliner diagnostic tools

Job description

Energy Jobline ZR is seeking a Standard Diesel Mechanic to perform repair and maintenance on over-the-road semi-trucks, trailers and diesel vehicles in Rochelle, IL.

The role emphasizes diagnostics, preventive maintenance, and component replacement (Cummins/Detroit Diesel, Freightliner, Carrier, Thermo King). ASE Diesel Certification, CDL, and strong diagnostic skills are required; owning tools is essential.