Senior Diesel Technician — Top Pay, Benefits & Growth

I-STATE TRUCK CENTERS; Windsor (WI); On-site; USD 55,000 - 85,000; Full time

Benefits offered by this job

Competitive Wages

Uniforms supplied

Tool program available

Tuition assistance

Health, dental and vision coverage

Paid Time Off

Holidays and PTO

401(K) with company matching

Disability insurance

Life insurance

Virtual health care

PPE reimbursement

Pet Insurance

Employee discounts

Employee Assistance Program

Well-being screening

Job summary

I-State Truck Center in Madison, WI is seeking a Senior Diesel Mechanic to diagnose, repair, and maintain heavy‑duty diesel trucks. You will handle engines, transmissions, brakes, and related systems, using advanced diagnostic tools and manuals.

Ideal candidates will have 2–5 years of experience in heavy‑duty diesel repair, a focus on safety, and the ability to communicate effectively with fleet managers and drivers. Competitive wages and growth opportunities are offered.

Qualifications

• Requires high school diploma or equivalent; technical diesel certification preferred.
• 2–5 years of repairing heavy-duty diesel trucks.
• Proficiency with diagnostic tools and ability to read manuals and schematics.

Responsibilities

• Diagnose and repair heavy-duty diesel trucks using diagnostic tools and manuals.
• Perform routine preventive maintenance: oil changes, filters, tires, brakes, chassis lubrication.
• Replace or repair major components such as engines, transmissions, differentials, turbochargers, brakes.
• Weld, cut, or fabricate to modify truck frames or components as needed.
• Document service reports, parts used, and maintenance activities for warranty and compliance.
• Communicate repairs and maintenance recommendations to fleet managers or drivers.
• Adhere to OSHA/DOT regulations and keep a clean, safe work area.
• Maintain and organize tools and diagnostic equipment for field service.

Skills

Diesel engines knowledge

Hydraulic systems

Electrical systems & ECM diagnostics

Reading manuals & schematics

Customer service skills

Education

High school diploma or equivalent

Technical diploma or certification in diesel mechanics

Tools

Cummins Insite

Detroit Diesel Diagnostic Link

OEM software

Hand and power tools

Job description

I-State Truck Center in Madison, WI is seeking a Senior Diesel Mechanic to diagnose, repair, and maintain heavy‑duty diesel trucks. You will handle engines, transmissions, brakes, and related systems, using advanced diagnostic tools and manuals.

Ideal candidates will have 2–5 years of experience in heavy‑duty diesel repair, a focus on safety, and the ability to communicate effectively with fleet managers and drivers. Competitive wages and growth opportunities are offered.