Journeyman Diesel Mechanic

I-STATE TRUCK CENTERS; Billings (MT); On-site; USD 50,000 - 70,000; Full time

Benefits offered by this job

Competitive wages

Uniforms provided

Tool program available

Medical, dental, and vision coverage

401(k) with company match

Employee discounts

Job summary

I-State Truck Center in Billings, Montana is seeking a Journeyman Diesel Mechanic to join our dynamic team. The ideal candidate will have 2–5 years of heavy-duty diesel truck experience, proficient in diagnostics, repair, and preventive maintenance. This position offers a competitive salary, consistent Wednesday to Saturday schedule, and a range of employee benefits including medical coverage and tuition assistance. Join us in a fast-paced environment with opportunities for career growth.

Qualifications

• 2–5+ years of hands-on heavy-duty diesel truck experience required.
• Strong knowledge of diesel engines, electrical systems, and hydraulics.

Responsibilities

• Diagnose complex mechanical, hydraulic, electrical, and electronic systems.
• Perform routine maintenance including oil changes and brake adjustments.
• Repair or replace critical components such as diesel engines and transmissions.

Skills

Heavy-duty diesel truck experience

Strong problem-solving ability

Effective communication skills

Education

High school diploma or equivalent

Technical diploma or certification in diesel repair

Tools

Diagnostic software

Hand/power tools

Job description

Location: Billings, Montana

Position: Journeyman Diesel Mechanic

Company: I-State Truck Center

Schedule: Wednesday – Saturday

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.
• Tool program available.
• 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.
• 6 paid holidays plus 2 floating holidays.
• 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).
• Pet insurance.
• 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.

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