Diesel Mechanic

I-State Truck Center•Sioux Falls, SD

28d•Onsite

About The Position

I-State Truck Center, a leading Midwest truck dealership and service provider specializing in Freightliner, Detroit Diesel, Isuzu Truck, Battle Motors, and Fruehauf Trailers, is seeking skilled Diesel Technicians. The company offers a stable, team-focused environment for individuals who take pride in quality work and wish to advance their careers. The role involves diagnosing and repairing mechanical, electrical, and hydraulic issues on heavy-duty diesel trucks, utilizing advanced diagnostic tools and OEM software. Responsibilities include performing preventive maintenance, repairing major components, completing work orders, communicating with customers, and maintaining a safe workspace. The company is part of Interstate Companies, committed to best-in-class service across the Midwest and supports Military-Friendly hiring.

Requirements

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
Valid driver’s license

Nice To Haves

Basic welding/fabrication skills
CDL preferred
Diesel tech certification or ASE (T2-T8) is a plus

Responsibilities

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