Diesel Technician: 24/7 On-Call Field & Shop Expert

Colonial Group; Irving (TX); On-site; USD 65,000 - 90,000; Full time

Job summary

Colonial Group in Irving, TX is seeking a Diesel Technician to service and repair trucking and rail equipment at customer sites or in the shop. You will diagnose engines, hydraulics, brakes, transmissions, and electrical systems to ensure equipment runs to manufacturer specs.

The role requires 5+ years in medium to heavy-duty vehicle repair, a HS diploma or GED, and the ability to read precision instruments. You must be willing to travel 100% to customer sites and maintain safety compliance.

Qualifications

• High school diploma or GED required.
• 5+ years' experience in medium-heavy duty vehicle repairs (PMs, diagnostics, brakes, fuel systems, powertrain, aftertreatments).

Responsibilities

• Diagnose and repair diesel engines, electric motors, transmissions, brakes and electrical systems.
• Perform safety-compliant maintenance and routine servicing.
• Block, chock and secure equipment; disassemble for major repairs as needed.
• Record maintenance and repair work in a timely manner.
• Provide technical support to team members and supervise skill development.
• Travel to customer sites or work in the company shop; maintain safety compliance with DOT/OSHA.

Skills

Customer service

Verbal communication

Mechanical aptitude

Diagnostics

Team support

Education

High school diploma or GED

Trade school certificate preferred

Tools

Micrometers

Dial indicators

Bore gauges

Welding tools

Job description

Colonial Group in Irving, TX is seeking a Diesel Technician to service and repair trucking and rail equipment at customer sites or in the shop. You will diagnose engines, hydraulics, brakes, transmissions, and electrical systems to ensure equipment runs to manufacturer specs.

The role requires 5+ years in medium to heavy-duty vehicle repair, a HS diploma or GED, and the ability to read precision instruments. You must be willing to travel 100% to customer sites and maintain safety compliance.