Senior Diesel Technician: Top Pay, Overtime & Factory Training

W.W.Williams Company; Greer (SC); On-site; USD 48,000 - 55,000; Full time

Benefits offered by this job

8 Paid Holidays & 1 Paid Wellness Day

Paid Time Off

Employee Referral Bonus Program

401k with Company Match

Company Paid Training

Job summary

W.W. Williams Company is seeking two to three Senior Diesel Technicians (Journeyman / Tech 1) for a full-time, on-site role in Greer, SC. You will own the most challenging diagnostic work, perform heavy truck repairs from diagnosis to road test, and mentor junior technicians.

Requires 7+ years on Class 6–8 trucks, ASE/MRO certifications, and strong diagnostic tool experience. We offer factory-style training, competitive pay, overtime, and a clear path to senior technician levels within a

Qualifications

• 7+ years as a journeyman / Tech 1 on Class 6–8 trucks.
• ASE Medium/Heavy Truck certified (full T2–T8 series).
• OEM certifications: Detroit (DTNA), Allison and/or Cummins.
• Strong electronic diagnostics: DiagnosticLink, Cummins INSITE, Allison DOC, laptop-based troubleshooting.
• Engine, aftertreatment (DPF/SCR), electrical and transmission repair, from diagnosis to road test.
• Your own professional tool set and a valid driver’s license (CDL-A a plus).

Responsibilities

• Own the toughest diagnostic jobs in the shop on fleet customers’ Detroit, Cummins and Allison-powered trucks.
• Get it right the first time: diagnose, repair, road test and document it.
• Be the go-to tech who helps junior techs get unstuck.
• A phone call within 48 hours of applying.
• A shop visit and interview within 5 days.
• An offer within 48 hours of your interview.

Skills

Journeyman/Tech 1 experience

Electronic diagnostics

Diagnose & repair heavy trucks

Own tool set

CDL-A

OEM certifications knowledge

Education

ASE Medium/Heavy Truck certified (T2–T8)

OEM certifications: Detroit, Allison, Cummins

Tools

DiagnosticLink

Cummins INSITE

Allison DOC

Job description

W.W. Williams Company is seeking two to three Senior Diesel Technicians (Journeyman / Tech 1) for a full-time, on-site role in Greer, SC. You will own the most challenging diagnostic work, perform heavy truck repairs from diagnosis to road test, and mentor junior technicians.

Requires 7+ years on Class 6–8 trucks, ASE/MRO certifications, and strong diagnostic tool experience. We offer factory-style training, competitive pay, overtime, and a clear path to senior technician levels within a