Diesel Mechanic (Diag)

Vital Tech Solutions; East Chicago (IN); On-site; USD 52,000 - 82,000; Full time

Job summary

Vital Tech Solutions in East Chicago, IN is seeking an experienced Diagnostic Diesel Technician to support maintenance operations with advanced troubleshooting, diagnostics, and repair of diesel-powered trucks and equipment. This role requires strong electrical and emissions systems knowledge to diagnose complex failures and perform safe, efficient repairs.

You will use OEM software tools, perform preventative maintenance, document work, and mentor junior technicians.

Qualifications

• Minimum 5 years of hands-on experience as a diesel technician.
• Ability to read wiring diagrams and service manuals.
• Familiarity with OEM diagnostic software and scan tools.
• Must provide own basic hand tools.

Responsibilities

• Utilize OEM diagnostic software and scan tools to identify root causes and complete repairs.
• Conduct preventative maintenance inspections and identify potential concerns.
• Diagnose and repair mechanical, electrical, hydraulic, pneumatic, steering, suspension, brake, and drivetrain issues.
• Document diagnostics, repairs, labor, and parts usage accurately.
• Support shop operations by mentoring junior technicians as needed.
• Service aftertreatment systems including DPF, DEF, and SCR components.

Skills

Diesel diagnostics

Electrical troubleshooting

Emissions systems knowledge

Mentoring junior techs

Job description

East Chicago, United States | Posted on 09/16/2026

Diesel Mechanics! - Join a Company Where People Stay, Benefits Matter, and Respect Comes First.

Shift is Mon-Fri 6am-2:30pm

We are looking for an experienced Diagnostic Diesel Technician to support our maintenance operations through advanced troubleshooting, diagnostics, and repair of diesel-powered trucks and equipment. This position requires a technician with strong electrical and emissions systems knowledge who can accurately diagnose complex mechanical failures and complete repairs safely and efficiently.

Key Responsibilities

• Utilize OEM diagnostic software, scan tools, and technical resources to identify root cause failures and complete accurate repairs
• Conduct preventative maintenance inspections and identify potential equipment concerns before failure occurs
• Diagnose and repair mechanical, electrical, hydraulic, pneumatic, steering, suspension, brake, and drivetrain issues
• Maintain compliance with company safety procedures, environmental regulations, and maintenance standards
• Perform advanced diagnostics and troubleshooting on diesel engines, electronic controls, and emissions systems
• Accurately document diagnostics, completed repairs, labor, and parts usage
• Support shop operations by assisting and mentoring junior technicians as needed
• Service and repair aftertreatment systems including DPF, DEF, and SCR components

Requirements

• Abilityto read and interpret wiring diagrams, service manuals, and technicaldocumentation
  
• Minimum5 years of hands-on experience as a diesel technician
  
• Familiaritywith OEM diagnostic software, electronic troubleshooting systems, and scantools
  
• Mustprovide own basic hand tools
  
• Experiencediagnosing and repairing aftertreatment systems including DPF, DEF, andSCR
  
• Strongdiagnostic and electrical troubleshooting background
  
• Validdriver’s license required; CDL preferred or willingness to obtain
  
• Experienceworking with diesel engine platforms such as Cummins, Detroit Diesel, CAT,PACCAR, or equivalent
  
• Experienceperforming repairs on engines, drivetrains, brakes, steering, suspension,and related heavy-duty systems