Diesel Technician - All Levels, Growth & Benefits

Interstate Companies, Inc.; Madison (WI); On-site; USD 60,000 - 80,000; Full time

Benefits offered by this job

Competitive pay

Manufacturer training

Health benefits

401(k) plan

Tuition assistance

Paid PTO

Job summary

I-State Truck Center in Madison, Wisconsin is hiring diesel mechanics of all experience levels to join our service team. We welcome recent diesel graduates, technicians moving into heavy‑duty repair, and seasoned diesel technicians seeking their next opportunity.

You’ll work on Class 6–8 trucks with engines from Detroit Diesel, Cummins, CAT and more. Expect hands‑on maintenance, diagnostics, and repairs, plus ongoing manufacturer training and a strong safety culture.

Qualifications

• Entry-level to experienced diesel technicians.
• Diesel or automotive technical training preferred.
• Diesel engines, mechanical and electrical systems knowledge.
• Strong mechanical aptitude and troubleshooting.
• Ability to read service manuals, wiring diagrams, and schematics.
• Valid driver’s license required; ASE/CDL a plus.

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

Mechanical aptitude

Troubleshooting

Reading schematics

Education

Diesel or automotive technical training

Tools

Cummins INSITE

Detroit Diesel DiagnosticLink

Job description

I-State Truck Center in Madison, Wisconsin is hiring diesel mechanics of all experience levels to join our service team. We welcome recent diesel graduates, technicians moving into heavy‑duty repair, and seasoned diesel technicians seeking their next opportunity.

You’ll work on Class 6–8 trucks with engines from Detroit Diesel, Cummins, CAT and more. Expect hands‑on maintenance, diagnostics, and repairs, plus ongoing manufacturer training and a strong safety culture.