Journeyman Diesel Mechanic

Interstate PowerSystems; Billings (MT); On-site; USD 50,000 - 70,000; Full time

Benefits offered by this job

401(k) with company match

Medical, dental, and vision coverage

Tuition assistance

PTO accrual starting day one

Uniforms provided

Employee Assistance Program

Job summary

A leading heavy-duty truck service provider in Billings, Montana, is seeking skilled diesel technicians. The ideal candidate will have 2-5+ years of heavy-duty diesel truck experience, strong diagnostic skills, and knowledge of brands like Freightliner. The role offers competitive wages and a consistent Wednesday–Saturday schedule, along with comprehensive benefits. Employees enjoy tuition assistance, medical coverage, and retirement plans, ensuring long-term stability in a growing organization.

Qualifications

• 2-5+ years of hands-on heavy-duty diesel truck experience is required.
• Familiarity with brands like Freightliner, Kenworth, and Peterbilt.
• Proficient with diagnostic tools and technical manuals.

Responsibilities

• Diagnose and troubleshoot complex mechanical and electrical systems.
• Perform routine maintenance and preventive tasks.
• Repair or replace diesel engines and critical components.

Skills

Diesel engine knowledge

Electrical systems

Hydraulics

ECM diagnostics

Problem-solving

Effective communication

Education

High school diploma or equivalent

Technical diploma in diesel or heavy-duty truck repair

Tools

Diagnostic software

Hand tools

Power tools

Job description

I-State Truck Center is a leading provider of heavy‑duty truck sales, parts, and service, specializing in Freightliner, Western Star, and Thomas Built Bus products. We proudly support commercial fleets, owner‑operators, and businesses across the region. Our Billings, Montana location offers a fast‑paced, professional shop environment for skilled diesel technicians looking to apply their expertise and continue growing their careers.

The ideal candidate has proven heavy‑duty diesel truck experience and a strong background in diagnostics, repair, and preventive maintenance. This role offers competitive wages, a consistent Wednesday–Saturday schedule, and long‑term stability within a growing organization.

Key Responsibilities

• Diagnose and Repair: Troubleshoot complex mechanical, hydraulic, electrical, and electronic systems on heavy‑duty diesel trucks using advanced diagnostic tools, schematics, and technical manuals (e.g., Cummins Insite, Detroit Diesel Diagnostic Link).
• Preventive Maintenance: Perform routine maintenance including oil changes, filter replacements, brake adjustments, tire inspections, and chassis lubrication to ensure reliability and regulatory compliance.
• Component Repairs: Repair or replace critical components such as diesel engines, transmissions, differentials, turbochargers, and braking systems.
• Welding and Fabrication: Perform minor welding, cutting, or fabrication work to repair or modify frames and components as needed.
• Documentation: Complete accurate service reports, document parts usage, and record maintenance activities for warranty, billing, DOT compliance, and inventory tracking.
• Customer Interaction: Communicate with drivers and fleet managers regarding repairs, recommendations, and service outcomes.
• Safety Compliance: Follow OSHA, DOT, manufacturer, and company safety guidelines while maintaining a clean and organized work environment.
• Tool & Equipment Management: Maintain shop tools, diagnostic equipment, and service areas to ensure operational readiness.

Qualifications

• Education: High school diploma or equivalent; technical diploma or certification in diesel or heavy‑duty truck repair preferred.
• Experience:
  • 2–5+ years of hands‑on heavy‑duty diesel truck experience is required.
  • Experience with brands such as Freightliner, Kenworth, Peterbilt, Volvo, Mack, or similar.
• Technical Skills:
  • Strong knowledge of diesel engines, electrical systems, hydraulics, and ECM diagnostics.
  • Proficiency with diagnostic software and hand/power tools.
  • Ability to read and interpret technical manuals, wiring diagrams, and schematics.
• Soft Skills:
  • Strong problem‑solving ability and attention to detail.
  • Effective communication and customer service skills.
• Certifications (Preferred):
  • Manufacturer training (Cummins, Detroit Diesel, Paccar) or ASE Heavy‑Duty certifications (T2–T8).
• Physical Requirements:
  • Ability to lift 50–75 lbs., work under trucks, and perform duties in various shop conditions.
• License:
  • Valid driver’s license required.
  • CDL strongly preferred.

Employee Benefits

• Competitive wages – be paid your worth.
• Uniforms provided and professionally cleaned.
• Tuition assistance for ongoing education and career growth.
• Medical, dental, and vision coverage starting the first of the month following hire.
• PTO accrual starting day one.
• 401(k) with company match.
• Company‑paid short‑term and long‑term disability.
• Company‑paid life insurance.
• Healthiest You virtual healthcare.
• PPE reimbursement (safety glasses and safety boots).
• Employee discounts on products and services.
• Employee Assistance Program (EAP) – free 24/7 access.
• Paid health and wellness screening.

This job description is not designed to cover a comprehensive listing of activities, duties, or responsibilities. Duties and responsibilities may change at any time.

Interstate Companies is an Equal Opportunity Employer.

Military Friendly Hiring.