Diesel Tech – Heavy-Duty Diagnostics & Training

Interstate Companies Inc; Windsor (WI); On-site; USD 52,000 - 86,000; Full time

Benefits offered by this job

Competitive wages based on experience

Tuition assistance for ongoing ed

Medical, dental, and vision coverage

401(k) with company match

Company-paid disability and life

PPE reimbursement

Employee discounts

EAP – 24/7

Job summary

I-State Truck Center is hiring diesel mechanics of all experience levels at our Madison location. We’re open to recent diesel graduates, automotive technicians looking to move into heavy‑duty repair, and experienced diesel technicians ready for their next opportunity.

Our technicians work on Class 6–8 trucks, including Freightliner, Western Star, and other major heavy‑duty platforms, with engines such as Detroit Diesel, Cummins, CAT, and more.

Qualifications

• Entry-level through experienced diesel technicians.
• Diesel or automotive technical training is preferred.
• Knowledge of diesel engines, mechanical and electrical systems, air brakes, and aftertreatment systems.

Responsibilities

• Perform preventive maintenance, inspections, diagnostics, and repairs.
• Troubleshoot diesel engines, aftertreatment, electrical, brake, suspension, and drivetrain systems.
• Use diagnostic tools such as Cummins INSITE, Detroit Diesel DiagnosticLink, and other OEM software.
• Repair and replace components based on your skill and experience level.
• Accurately document repairs and completed service work.
• Maintain a clean, organized, and safe work environment.
• Participate in ongoing technical and manufacturer training.

Skills

Diesel engines

Troubleshooting

Reading diagrams

Mechanical aptitude

Electrical systems

Education

Diesel or automotive technical training

Tools

Cummins INSITE

Detroit Diesel DiagnosticLink

Job description

I-State Truck Center is hiring diesel mechanics of all experience levels at our Madison location. We’re open to recent diesel graduates, automotive technicians looking to move into heavy‑duty repair, and experienced diesel technicians ready for their next opportunity.

Our technicians work on Class 6–8 trucks, including Freightliner, Western Star, and other major heavy‑duty platforms, with engines such as Detroit Diesel, Cummins, CAT, and more.