Diesel Truck Technician

Diesel Mechanic
Students receive both on-the-job experience and informal training with experienced workers in LCTI’s state-of-the-art classroom. This occupation involves using communication and organizational skills. Students learn how to efficiently diagnose, adjust, repair, or overhaul buses and trucks, or maintain and repair any type of diesel engines.


The U.S. Bureau of Labor Statistics projects that job opportunities for diesel mechanics will continue to increase both statewide and nationally through 2026. Lehigh Career & Technical Institute (LCTI) offers a 200-hour introductory Diesel Truck Technician Program that prepares students with the industry skills and certifications they need to enter this growing field. Students in the Diesel Truck Technician Program at LCTI are prepared to enter the workforce with the necessary technical expertise to succeed. This program prepares individuals to apply technical knowledge and skills to the specialized maintenance and repair of trucks, buses, and other commercial and industrial vehicles. Core instruction includes basic diesel technology skills, preventative maintenance inspections, drive trains, suspension, steering, brake, and electronic systems.

LCTI also offers the option to obtain a Class A or B Commercial Driver’s License, preferred by most employers.  Both of these programs require additional time and cost. See CDL/A and CDL/B Program Information Sheets for additional course description and prices.  CDL training includes driver skill development, applied safety regulations and procedures, equipment maintenance, proper loading techniques, intra- and inter-state regulations and one student per truck driver training.


  • General safety practices
  • Preventative Maintenance
  • Batteries and charging
  • Electrical and lights
  • Frames and 5th Wheels
  • Engine service
  • Drive lines
  • Brakes
  • Wheels and Hubs
  • Steering and suspension
  • HVAC/609 Certification
  • Valve adjustments
  • Intake and exhaust
  • Engine tear down and reassembly
  • DPF (diesel particulate filter) and SCR (selective catalytic reduction) systems
  • State Inspection certification


Next start date(s): September 10 – January 16, 2024

Schedule: Tuesdays and Thursdays 5:00 – 9:00 PM and every other Saturday of each month from 7:30 AM – 3:30  PM

If you’d like more information in regard to Adult Workforce Education, please contact Amy Rex at 610-799-1316 or rexa@mylcti.org. Individual tours are available by appointment.

CLICK HERE for funding options and scholarship opportunities



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Education Park Drive

Schnecksville, PA

Preparing all students for their personalized career pathway