Job Description

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

Join a leading Midwest truck dealership and service provider.
At I-State Truck Center, we specialize in Freightliner, Detroit Diesel, Isuzu Truck—and we’re looking for skilled Diesel Technicians who take pride in quality work and want to grow their careers in a stable, team-focused environment.

What You’ll Do

• Diagnose & repair mechanical, electrical, and hydraulic issues on heavy-duty diesel trucks
• Use advanced diagnostics (Cummins Insite, Detroit Diesel Diagnostic Link, OEM software)
• Perform preventive maintenance (oil, brakes, inspections, lubrication)
• Repair/replace major components (engines, transmissions, differentials, turbos)
• Complete work orders and documentation for warranty and compliance
• Communicate repairs and recommendations to customers
• Maintain a safe, clean, and organized workspace

What We’re Looking For

• 2+ years of heavy-duty diesel repair experience
• Strong troubleshooting and diagnostic skills
• Experience with trucks like Freightliner, Kenworth, Peterbilt, Volvo, or Mack
• Ability to read schematics and technical manuals
• Basic welding/fabrication skills (preferred)
• Valid driver’s license (CDL preferred)
• Diesel tech certification or ASE (T2–T8) is a plus

Why Join I-State Truck Center?

• Competitive pay — paid for your experience
• Full benefits starting the 1st of the next month
• Health, Dental, Vision
• 401(k) with company match
• PTO starting day one
• Paid holidays + floating holidays
• Company-paid life & disability insurance
• Tuition assistance & career growth opportunities
• Uniforms provided & cleaned
• Tool program available
• Boot & safety glasses reimbursement
• Employee discounts + wellness programs
• Pet insurance

Physical Requirements

• Lift up to 75 lbs
• Work in shop and outdoor conditions
• Perform physically active tasks throughout the shift

About Us
I-State Truck Center is part of Interstate Companies—committed to delivering best-in-class service to fleets, owner-operators, and businesses across the Midwest.

Apply today to start your next chapter as a Diesel Technician.

Interstate Companies is an Equal Opportunity Employer and proudly supports Military-Friendly hiring.

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