Heavy-Duty Diesel Truck Mechanic

Job Title: Heavy-Duty Diesel Truck Mechanic
Location: Sioux Falls South Dakota
Company: I-State Truck Center

I-State Truck Center is a leading provider of heavy-duty truck sales parts and service in the Midwest specializing in Freightliner Western Star and Detroit Diesel products. With a commitment to excellence and customer satisfaction we serve commercial fleets owner-operators and businesses across South Dakota and beyond. Our Sioux Falls location is at the heart of our operations offering a dynamic environment for skilled tradespeople to grow their careers. The ideal candidate will have a strong background in diesel engine repair diagnostics and maintenance with a focus on delivering high-quality service to ensure customer satisfaction. This role offers highly competitive wages and opportunities for career growth in a dynamic work environment.

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).
• Perform Maintenance: Conduct routine preventive maintenance including oil changes filter replacements tire inspections brake adjustments and chassis lubrication to ensure truck reliability and compliance with federal and state regulations.
• Component Replacement: Replace or repair critical components such as diesel engines transmissions differentials turbochargers or brake systems.
• Welding and Fabrication: Perform minor welding cutting or fabrication tasks to repair or modify truck frames bodies or components as needed.
• Documentation: Complete detailed service reports document parts used and record maintenance activities for warranty billing DOT compliance and inventory purposes.
• Customer Interaction: Communicate with fleet managers or drivers to explain repairs provide maintenance recommendations and ensure satisfaction with service.
• Safety Compliance: Adhere to OSHA DOT and company safety regulations maintain a clean work environment and follow manufacturer protocols.
• Tool and Equipment Management: Maintain and organize tools service vehicles and diagnostic equipment to ensure operational readiness for field service.

Qualifications:

• Education: High school diploma or equivalent; technical diploma or certification in diesel mechanics or heavy-duty truck repair preferred.
• Experience: 25 years of experience repairing and maintaining heavy-duty diesel trucks (e.g. Kenworth Peterbilt Freightliner Volvo or Mack).
• Skills:
  • In-depth knowledge of diesel engines hydraulic systems electrical systems and electronic controls (e.g. ECM diagnostics).
  • Proficiency with diagnostic tools (e.g. Cummins Insite Detroit Diesel Diagnostic Link or OEM software) and hand/power tools.
  • Ability to read and interpret technical manuals wiring diagrams and hydraulic schematics.
  • Strong problem-solving skills and attention to detail.
  • Basic welding and fabrication skills (preferred).
  • Excellent communication and customer service skills for interacting with fleet managers and drivers.
• Certifications: Manufacturer-specific training (e.g. Cummins Detroit Diesel Paccar) or ASE Heavy Duty Truck certifications (e.g. T2T8 series) are a plus.
• Physical Requirements: Ability to lift heavy parts (up to 5075 lbs.) work in confined spaces (e.g. under truck chassis) and perform tasks in various weather conditions.
• Drivers License: Valid drivers license required; CDL (Commercial Drivers License) with appropriate endorsements strongly preferred.

Employee Benefits:

• Competitive Wages Be paid your worth!
• Uniforms - fully supplied by Interstate including cleaning!
• Tool program - available
• Tuition assistance - for educational and ongoing career growth
• Health dental and vision coverage - begins on the first day of the following month.
• Paid Time Off - (PTO) starts accruing day one of your full-time employment.
• Holidays - 6 Holidays and 2 Floating Holidays per year
• 401(K) - with company matching.
• Long Term Disability - Supplied
• Short Term Disability - Supplied
• Life Insurance - Supplied
• Healthiest You - Virtual Health Care paid by Interstate.
• PPE Reimbursement- Safety Glasses and Safety Boot Reimbursement
• Pet Insurance We care about our furry friends!
• Employee Discounts - available on products and services
• Paid Employee Assistance Program - Free 24/7 Access to a guidance consultant regarding life challenges you or family member may face.
• Paid Health and Well-being screening - for employees and their spouse

Please note this job description is not designed to cover or contain a comprehensive listing of activities duties or responsibilities that are required of the employee for this job. Duties responsibilities and activities may change at any time with or without notice.

Military Friendly Hiring.

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