Diesel Mechanic (Diag)

Vital Tech Solutions; Cayce (SC); On-site; USD 60,000 - 90,000; Full time

Job summary

Vital Tech Solutions in Cayce, SC is seeking a skilled Diagnostic Diesel Technician to join our maintenance team. The role focuses on advanced diagnostics, troubleshooting, and repair of diesel-powered equipment and vehicles.

The ideal candidate brings strong electrical diagnostic experience and hands-on ability to resolve complex mechanical issues while maintaining safety and quality standards. CDL preferred or willing to obtain one.

Qualifications

• 3+ years of hands-on diesel technician experience.
• Strong diagnostic and electrical troubleshooting skills.
• Experience with diesel engines (Cummins, Detroit, CAT, PACCAR, etc.).
• Familiarity with OEM diagnostic software and scan tools.
• Ability to read wiring diagrams and service manuals.
• Valid driver’s license (CDL preferred or willingness to obtain).

Responsibilities

• Perform advanced diagnostics on diesel engines, emissions systems, and electronic controls.
• Troubleshoot electrical, hydraulic, and pneumatic systems.
• Diagnose and repair aftertreatment systems (DPF, DEF, SCR).
• Utilize diagnostic software and OEM scan tools to determine root cause failures.
• Perform repairs on engines, transmissions, brakes, steering, suspension, and drivetrains.
• Accurately document repairs, diagnostics, and parts usage.
• Conduct preventative maintenance inspections.
• Maintain compliance with safety, environmental, and company policies.
• Assist and mentor junior technicians as needed.

Skills

Diesel diagnostic

Electrical troubleshooting

Diesel engines

Diagnostic software

Wiring diagrams

CDL preferred

Tools

OEM scan tools

Diagnostic software

Job description

Cayce, United States | Posted on 09/21/2026

We are seeking a skilled Diagnostic Diesel Technician to join our maintenance team. This role focuses on advanced diagnostics, troubleshooting, and repair of diesel-powered equipment and vehicles. The ideal candidate has strong electrical and emissions diagnostic experience and can efficiently identify and resolve complex mechanical issues while maintaining high safety and quality standards.

Key Responsibilities

• Perform advanced diagnostics on diesel engines, emissions systems, and electronic controls
• Troubleshoot electrical, hydraulic, and pneumatic systems
• Diagnose and repair aftertreatment systems (DPF, DEF, SCR)
• Utilize diagnostic software and OEM scan tools to determine root cause failures
• Perform repairs on engines, transmissions, brakes, steering, suspension, and drivetrains
• Accurately document repairs, diagnostics, and parts usage
• Conduct preventative maintenance inspections
• Maintain compliance with safety, environmental, and company policies
• Assist and mentor junior technicians as needed

Required Qualifications

• 3+ years of hands-on diesel technician experience
• Strong diagnostic and electrical troubleshooting skills
• Experience with diesel engines (Cummins, Detroit, CAT, PACCAR, etc.)
• Familiarity with OEM diagnostic software and scan tools
• Ability to read wiring diagrams and service manuals
• Valid driver’s license (CDL preferred or willingness to obtain)