Diesel Mechanics

Diesel Mechanics (DEM) is a 60 semester hour program combining classroom theory and hands-on practice in the laboratory.  Requirements for the certificate of completion include four academic courses totaling 12 semester hours and all required career technical courses.  Students can also earn stackable short term certificates and industry certifications. This program is designed to help students acquire the knowledge, skills and abilities needed to prepare for successful entry-level employment in the field of diesel mechanics.


  • Certificate
    • Diesel Mechanics

  • Short Term Certificate
    • Electrical Fundamentals
    • Engine Repair
    • Heavy Duty Brake Repair
    • Train Service

Industry Certification
National Career Readiness Credential

Estimated Program Length

Award Length Credit Hours
Short Term Certificate 1 semester 12
Certificate of Completion 4 semesters 60

Required Program Courses

Course Title Credit Hours
DEM104 Basic Engines 3
DEM111 Equip Safety/Mech. Fundamentals 3
DEM122 Heavy Vehicle Brakes 3
DEM123 Pneumatics and Hydraulics 3
DEM124 Electronic Engine Systems 3
DEM125 Heavy Vehicle Drive Trains 3
DEM126 Advanced Engines 3
DEM127 Fuel Systems 3
DEM128 Heavy Vehicle Drive Train Lab 3
DEM129 Diesel Engine Lab 3
DEM130 Electrical/Electronic Fundamentals 3
DEM135 HV Steering/Suspension Systems 3
DEM137 Heating/AC/Refrigeration Systems 3
DEM170 Heavy Vehicle Air Brakes 3
DEM183 Special Topics in Power Train 3
DEM186 Special Projects in Comm. Vehicles 3

Required Academic Courses

Course Title Credit Hours
DPT100 Introductory Computer Skills I 3
ENG100 Vocational Technical English 3
MAH101 Introductory Mathematics I 3
SPC103 Oral Communication Skills 3

Elective Courses

Course Title Credit Hours
DEM105 Preventive Maintenance 3
DEM181 Special Topics in Electrical 3
DEM182 Special Topics in Engines 3
DEM184 ST HD Brakes/Steering/Suspension 3
DEM191 Special Projects in Diesel Mechanics 3

Electives may be offered to meet a student’s personal educational goals or for instructional purposes.


Program Contact

Mr. Randy Hull, Instructor
Draper Instructional Service Center

This is a “Live Work” program.

Occupational Data*

Diesel mechanics inspect, repair, and overhaul buses and trucks, and maintain and/or repair any type of diesel engine. Diesel mechanics usually work in repair shops, but may occasionally repair vehicles on roadsides or at worksites. According to the Bureau of Labor Statistics, the median annual wage for diesel mechanics was $46,360 in May 2017. Job prospects will be best for those who have completed postsecondary training in diesel engine repair.

*Bureau of Labor Statistics, U.S. Department of Labor, Occupational Outlook Handbook