Diesel Technician: Diagnostics, PMs & Fleet Uptime

True North Fleet Services; Upper Chichester Township (Delaware County); On-site; USD 39,000 - 55,000; Full time

Benefits offered by this job

Competitive pay

Paid ASE testing

Wage increases with ASE certifications

Training opportunities

Stability and growth

401(k) matching

Health insurance

Paid time off

Vision insurance

Job summary

True North Fleet Services, in partnership with PennFleet, is seeking a Diesel Technician who takes pride in keeping heavy‑duty equipment safe, reliable, and on the road through preventive maintenance, diagnostics, and quality repairs on diesel trucks and trailers.

If you’re a hands‑on technician who values teamwork and professional growth, this is a solid opportunity to build a long‑term career with competitive pay, ongoing ASE testing support, and clear advancement opportunities.

Qualifications

• 2+ years of diesel/heavy-duty maintenance experience.
• ASE TSeries certifications preferred (T2/T4/T5/T6/T8).
• Strong mechanical and diagnostic skills.
• Familiarity with preventive maintenance programs.
• Ability to work independently and as part of a team.
• Valid driver’s license (CDL a plus, not required).

Responsibilities

• Perform preventive maintenance (PMs) on heavyduty trucks and trailers.
• Diagnose and repair diesel engines, brake systems, suspension, steering, and electrical components.
• Identify and troubleshoot mechanical and electronic issues.
• Complete DOT inspections and ensure compliance standards are met.
• Accurately document repairs and maintenance activities.
• Maintain a clean, safe, and organized work environment.
• Collaborate with drivers, service advisors, and shop leadership.

Skills

Diesel/heavy-duty maintenance

Mechanical and diagnostics skills

Teamwork and independence

PM program familiarity

Valid driver’s license (CDL a plus,Not

Education

ASE TSeries certifications (T2/T4/T5/T6/T8) preferred

Tools

Diagnostic tools familiarity

Job description

True North Fleet Services, in partnership with PennFleet, is seeking a Diesel Technician who takes pride in keeping heavy‑duty equipment safe, reliable, and on the road through preventive maintenance, diagnostics, and quality repairs on diesel trucks and trailers.

If you’re a hands‑on technician who values teamwork and professional growth, this is a solid opportunity to build a long‑term career with competitive pay, ongoing ASE testing support, and clear advancement opportunities.