Diesel Mechanic (Diag)

Vital Tech Solutions; New York (NY); On-site; USD 65,000 - 90,000; Full time

Job summary

Vital Tech Solutions in Brooklyn, NY is seeking an experienced Diagnostic Diesel Technician to support our maintenance operations with advanced troubleshooting, diagnostics, and repair of diesel-powered trucks and equipment.

The role requires strong electrical and emissions systems knowledge, the ability to read wiring diagrams, and a hands-on approach. You will document work, mentor junior technicians, and uphold safety standards in a fast-paced shop.

Qualifications

• Minimum 5 years of hands-on diesel technician experience
• Ability to read wiring diagrams and service manuals
• Familiar with OEM diagnostic software, electronic troubleshooting systems, and scan tools
• Welding and fabrication experience highly desired
• CDL-A is a plus
• Experience with heavy-duty engine platforms and related systems

Responsibilities

• Use OEM diagnostic software and scan tools to identify root causes and complete repairs
• Perform preventative maintenance inspections and identify equipment concerns
• Diagnose and repair mechanical, electrical, hydraulic, pneumatic, steering, suspension, brake, and drivetrain issues
• Maintain safety and environmental compliance
• Perform advanced diagnostics on diesel engines, electronic controls, and emissions systems
• Document diagnostics, repairs, labor, and parts usage
• Assist and mentor junior technicians as needed
• Service and repair aftertreatment systems including DPF, DEF, and SCR

Skills

Diesel diagnostics

Electrical troubleshooting

Emissions systems knowledge

Read wiring diagrams

Mentor junior technicians

Tools

OEM diagnostic software

Scan tools

Welding equipment

Job description

Brooklyn, United States | Posted on 10/27/2026

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

6:30am-3pm, M-F

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
  
• Welding and Fabrication experience HIGHLY DESIRED
  
• Mustprovide own basic hand tools
  
• Experiencediagnosing and repairing aftertreatment systems including DPF, DEF, andSCR
  
• Strongdiagnostic and electrical troubleshooting background
  
• CDL-A is a plus
  
• 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