Heavy-Duty Diesel Mechanic
About the job
- A high school diploma or GED is required.
- A valid driver's license and the ability to meet insurance requirements are required.
- A Class B commercial driver's license with air brake endorsement is preferred; a Class A commercial driver's license is highly preferred.
- A certificate from a diesel technician training school or at least four years of mechanical medium- or heavy-duty truck service experience in a shop setting or military installation is required.
- Candidates must demonstrate mechanical aptitude and commitment to quality work.
- Candidates must provide their own tools; specialty and original equipment manufacturer-required tooling is provided for shared on-site use.
- Candidates must participate in a pre-employment background check and drug screen.
- Perform consistent, high-quality work according to original equipment manufacturer, warranty, and dealership standards.
- Read repair orders; observe and listen to vehicle operation; obtain diagnostic information; identify root-cause malfunctions; plan work procedures; and perform authorized vehicle repairs.
- Perform general and major repairs on truck systems, including engines, transmissions, suspension, brakes, heating, ventilation, and air conditioning, and electronics.
- Document diagnostic findings, repair status, and work performed using Service Notes to support customer communication and warranty processing.
- Communicate with the Parts department to obtain and verify necessary parts, and with the Shop Foreman and Service Administration team regarding status updates or requests.
- Perform quality checks on all work performed.
- Road-test vehicles to confirm repairs resolved customer complaints.
- Welding and fabrication skills are a plus.
About the company
Truck Centers, Inc. sells, services and repairs heavy-duty trucks for trucking fleets and other commercial operators across Illinois, Indiana and Missouri. It is a franchised Freightliner and Western Star dealer, selling trucks for highway and vocational work, including pre-owned units, along with Detroit engines and related components. Its dealerships also run parts counters with delivery, service shops with mobile repair and 24/7 road service, and collision centers that fix trucks, buses and RVs of any make. The family-owned company earns money from truck sales, help arranging financing, parts sales and repair labor. Truck Centers, Inc. was founded in 1970 and is headquartered in Troy, Illinois.
Company Size
501-1,000
Company Stage
N/A
Total Funding
N/A
Headquarters
Troy, IL
Founded
1970
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Simplify's Take
What believers are saying
- Lineup is widening: in July 2026, TCI announced it will sell Battle Motors' diesel, natural gas and electric work trucks.
- Apprentices get structure: TCI's technician program pairs 16 weeks of training modules with 12 weeks of senior-technician mentoring.
- A signing bonus is on offer: TCI's Troy second-shift diesel mechanic opening lists up to $7,500 for qualified technicians.
What critics are saying
- Its dealerships rest on one maker: Daimler Truck North America builds both the Freightliner and Western Star trucks TCI sells.
- Mechanics supply their own tools: TCI's South Bend technician posting requires personal tools, with specialty tooling shared on site.
- Availability extends past set hours: TCI's Champaign-based mobile diesel mechanic must stay available to customers outside normal hours when needed.
What makes Truck Centers, Inc. unique
- Training is built in: TCI runs a 24,000-square-foot Daimler Trucks North America training center that also teaches other dealers' technicians.
- Parts depth backs service: TCI carries more than $23 million in stocked parts inventory.
- Service meets a factory standard: TCI was in Freightliner's first tier of dealers validated for its Elite Support service program.
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