Mobile Diesel Mechanic

ABC-Companies; Grand Prairie (TX); On-site; USD 70,000 - 90,000; Full time

Benefits offered by this job

Medical Insurance

Dental Insurance

Vision Insurance

401(k) Retirement Plan

Paid Time Off (PTO)

Job summary

ABC Companies seeks a Mobile Diesel Technician to diagnose, repair, and maintain motorcoaches and other commercial vehicles at customer sites. Working from a company-provided mobile service vehicle, you will perform advanced diesel, electrical, HVAC, and electronic diagnostics in the field, delivering professional service and ensuring high uptime for customers.

The role requires travel, including overnight stays, and a strong focus on safety, documentation, and customer communication.

Qualifications

• Experience diagnosing and repairing diesel engines on motorcoaches and heavy vehicles.
• Strong field service and customer interactions in a mobile setting.
• Ability to work independently in the field with safety and quality in mind.

Responsibilities

• Travel to customer locations to diagnose, repair, and maintain motorcoaches and commercial vehicles.
• Operate a mobile service vehicle to provide on-site technical support and repair services.
• Document findings, repairs, and parts used in work orders and communicate with customers.
• Maintain a well-equipped mobile vehicle and ensure service readiness.
• Ensure safety, compliance, and high-quality workmanship on all repairs.

Skills

Diesel diagnostics

Motorcoach repair

Field service

Customer interaction

Tools

Diagnostic equipment

Job description

Careers

• Home
• Our Company
• Careers

ABC Companies is a leading provider of transportation solutions, offering vehicles for 8-81 passengers, along with parts, service, and financing to support fleet operators across North America. Family-owned and operated since 1972, ABC is driven by its mission to advance the transportation industry through innovative, collaborative solutions that redefine the standard. Guided by its core values of Integrity, Trust, Collaboration, and Innovation, ABC is committed to delivering customer-focused, high-quality solutions that enhance safety, performance, and reliability. Join ABC Companies as a Mobile Diesel Technician and bring advanced diesel diagnostics and repair directly to our customers. In this highly independent, customer-facing role, you'll operate from a company-provided mobile service vehicle to diagnose and repair motorcoaches and other commercial vehicles at customer locations and in the field. From complex diesel and electrical diagnostics to HVAC, electronic, and emerging EV systems, you'll solve challenging problems where they happen and help customers maximize vehicle uptime. If you're an experienced technician who enjoys autonomy, travel, technical problem-solving, and working directly with customers, this is an opportunity to take your expertise beyond the shop with an industry leader in commercial transportation.

Benefits & Perks

At ABC Companies, we recognize that our employees are our greatest asset. We offer a comprehensive benefits package designed to support your health, financial well-being, and work-life balance, including:

• Medical Insurance
• Dental Insurance
• Vision Insurance
• 401(k) Retirement Plan
• Company-Paid Short-Term Disability Insurance
• Company-Paid Long-Term Disability Insurance
• Company-Paid Basic Life & AD&D Insurance
• Voluntary Term Life & AD&D Insurance
• Flexible Spending Accounts (FSA)
• Hospital Indemnity Insurance
• Employee Assistance Program (EAP)
• Paid Time Off (PTO)
• Paid Holidays
• Training and Professional Development Opportunities
• Career Growth and Advancement Opportunities

Benefits eligibility and offerings are subject to plan terms and company policies.

Position Overview

The Mobile Diesel Technician is an advanced-level field service technician responsible for diagnosing, repairing, and maintaining motorcoaches and other commercial vehicles at customer locations and remote job sites. Operating from a company-provided mobile service vehicle, this position independently performs complex mechanical, diesel, electrical, HVAC, and electronic diagnostics and repairs while delivering responsive, professional service directly to ABC customers.

The Mobile Diesel Technician serves as a trusted technical resource in the field, taking ownership of repairs from initial diagnosis through completion and communicating effectively with customers, Service leadership, Parts personnel, and other technical resources. This position requires regular travel, including overnight travel, and the ability to work independently while maintaining ABC's standards for safety, quality, documentation, and customer service.

What Success Looks Like

In this role, you'll make an impact by:

• Quickly and accurately diagnosing complex vehicle concerns in the field and delivering effective repairs that maximize customer uptime.
• Taking ownership of service calls from initial diagnosis through repair, verification, documentation, and customer communication.
• Building trusted customer relationships through technical expertise, responsiveness, professionalism, and dependable follow-through.
• Working independently and making sound technical decisions while knowing when to engage additional internal resources.
• Maintaining a well-equipped, organized, and service-ready mobile vehicle so you're prepared to respond effectively to customer needs.
• Identifying root causes and delivering high-quality repairs that minimize repeat failures and improve long-term vehicle reliability.
• Continuously expanding your expertise across diesel, electrical, HVAC, electronic, EV/high-voltage, and emerging commercial vehicle technologies.

Key Responsibilities

Mobile Field Service & Customer Support

• Travel to customer locations and other field sites to diagnose, repair, and maintain motorcoaches and commercial vehicles.
• Operate a company-provided mobile service vehicle to deliver on-site technical support and repair services.
• Serve as a primary technical point of contact while on-site, providing customers with professional communication regarding vehicle concerns, repair status, and recommended actions.
• Respond to field service needs throughout the assigned service area, including overnight travel as required.
• Represent ABC Companies professionally at customer facilities and job sites while maintaining strong customer relationships.
• Coordinate with Service leadership, Parts, and other internal resources to resolve customer concerns efficiently.

Advanced Diagnostics & Repair

• Inspect, diagnose, repair, and maintain motorcoaches, commercial vehicles, and other equipment as assigned.
• Perform advanced troubleshooting across diesel, mechanical, electrical, HVAC, electronic, and integrated vehicle systems.
• Diagnose complex and intermittent vehicle concerns using diagnostic equipment, software, electrical schematics, technical documentation, and established troubleshooting procedures.
• Perform root cause analysis to identify and resolve recurring vehicle or system concerns.
• Complete repairs safely and efficiently while maintaining manufacturer and ABC quality standards.
• Verify completed repairs and proper vehicle operation before returning equipment to service.
• Identify required parts, components, and materials and coordinate availability with Parts personnel.

Mobile Service Vehicle & Equipment

• Maintain the company-provided mobile service vehicle in a clean, organized, safe, and service-ready condition.
• Maintain appropriate inventory of parts, supplies, tools, and equipment necessary to support field service activities.
• Safeguard company equipment, tools, parts, and other assets assigned to the mobile service operation.
• Identify replenishment, maintenance, or equipment needs and communicate them to the appropriate internal resources.

Documentation & Communication

• Clearly and accurately document diagnostic findings, repairs performed, parts utilized, labor, and other required information on work orders using company systems and software.
• Maintain accurate records associated with customer visits and field service activities.
• Communicate repair findings, recommendations, unresolved concerns, and follow-up requirements to customers and internal stakeholders.
• Maintain accurate time and attendance reporting.

Technical Support & Continuous Development

• Serve as a technical resource to Service personnel and internal teams when advanced diagnostic support is required.
• Collaborate with shop leadership and other technical resources to resolve difficult or unusual vehicle concerns.
• Share technical knowledge and field observations that may help identify recurring issues or improve service practices.
• Continuously develop technical knowledge across evolving commercial vehicle systems, diagnostic technologies, and repair techniques.

Safety & Compliance

• Perform field service work in accordance with ABC Companies' safety policies and established repair practices.
• Assess customer and remote work environments and perform work in a manner that prioritizes personal, customer, and vehicle safety.
• Maintain compliance with applicable EPA, OSHA, DOT, and other federal, state, and local requirements.
• Maintain required licenses and certifications applicable to assigned responsibilities.
• Travel and work overtime or weekends as required to support customer and operational needs.
• Perform additional duties and special projects as assigned.

Qualifications

• 10+ years of diesel, motorcoach, or heavy commercial vehicle diagnostic and repair experience preferred.
• Advanced experience with heavy-duty diesel equipment, including motorcoaches, transit buses, tractor-trailers, heavy equipment, or similar commercial vehicles.
• Demonstrated ability to independently perform advanced troubleshooting and diagnostics across mechanical, electrical, HVAC