On-Site Mobile Diesel Technician

El Pollo Loco, Inc.; Byron Township (MI); On-site; USD 52,000 - 86,000; Full time

Benefits offered by this job

8 Paid Holidays & 1 Paid Wellness Day

Paid time off

Employee Referral Bonus Program

Medical, Dental, and Vision Insurance

401k with a Company Match

Company Paid Training

Growth and Leadership Opportunities

Job summary

W.W. Williams seeks a Mobile Fleet Technician to perform preventive maintenance, inspections, diagnostics, and repairs on diesel engines and heavy-duty trucks at customer locations.

You will ensure DOT compliance, quality repairs, and accurate documentation while working independently in varied environments. The role requires 3+ years of diesel repair experience, ASE certifications, and a customer-focused mindset.

Qualifications

• Requires 3+ years of diesel repair experience; 5–7 years preferred in fleet, dealership, or mobile tech environments.
• Certificate from a technical school or equivalent hands-on experience.
• Valid Driver's License; DOT Medical Card (or ability to obtain)
• ASE Certifications: T4 (Brakes), T7 (HVAC), T8 (PM)
• MACS 609 or equivalent mobile A/C certification
• Strong diagnostic and troubleshooting skills across multiple systems (brake, emissions, electrical, HVAC)
• Proficient in Microsoft Office and diagnostic software
• Clear written and verbal communication
• Ability to work in physically demanding environments

Responsibilities

• Perform quality repairs and preventive maintenance on diesel engines and heavy-duty trucks per manufacturer specifications.
• Conduct thorough vehicle inspections to identify damaged, worn, or broken parts.
• Create and execute job repair plans based on diagnostics, including estimating labor hours and required parts.
• Diagnose and repair electrical systems, A/C systems, emissions controls, and other diesel engine components.
• Complete PM services, DOT inspections, and documentation accurately and thoroughly.
• Use diagnostic software and follow electronic repair procedures.
• Maintain a clean and safe work area, both on customer sites and in the company vehicle
• Maintain accurate records for invoicing and warranty claims.
• Utilize company tools appropriately and maintain a personal tool inventory per company policy.
• Support and train junior technicians as needed.
• Adhere to all safety, EPA, and company policies.

Skills

Diesel repair

Diagnostic troubleshooting

Customer-focused mindset

Independent work

Education

Technical school certificate

Tools

Diagnostic software

Microsoft Office

Job description

W.W. Williams seeks a Mobile Fleet Technician to perform preventive maintenance, inspections, diagnostics, and repairs on diesel engines and heavy-duty trucks at customer locations.

You will ensure DOT compliance, quality repairs, and accurate documentation while working independently in varied environments. The role requires 3+ years of diesel repair experience, ASE certifications, and a customer-focused mindset.