Diesel Technology, Certificate of Proficiency

Forest Park

The Diesel Technology Certificate of Proficiency program is designed to prepare graduates for careers as medium/heavy truck repair technicians. Graduates will be qualified for positions requiring diagnosis and repair of the following truck systems: diesel engines, suspension and steering, brakes, electrical and electronics, preventive maintenance, drive train, and heating, ventilation and air conditioning. Graduates will be competent for entry-level positions in new vehicle dealerships, truck and bus leasing companies, street and highway departments, transit maintenance facilities, fleet carriers, and miscellaneous other vehicle-based operations.

Cost of Attendance.  For more information on cost of attendance visit MoSCORES

Program Career and Salary Information.  Pursuant to Missouri HB 1606 (2018), information regarding the number of credit hours, program length, employment rate, wage data, and graduates employed in careers related to their program of study at St. Louis Community College can be found at the following URL: https://scorecard.mo.gov/scorecard/. Search using School / Program “St. Louis Community College” and choose the degree or credential type of interest. 

The following limitations to the data apply: Information provided is based on the most recent cohorts available. Typically, most recent cohorts for wage and completion data are six years prior to the current academic year. Time to complete a program of study varies depending on the number of credit hours students earn per semester.

Interested in this program? Start the enrollment process by visiting the Apply to STLCC page.   

At the completion of the program, students are expected to:

  1. diagnose, service, and repair truck engines.
  2. diagnose, service, and repair truck braking systems.
  3. diagnose, service, and repair truck steering and suspension systems.
  4. diagnose, service, and repair truck electrical and electronic systems.
  5. diagnose, service, and repair truck HVAC systems.
  6. perform truck preventive maintenance.
  7. diagnose, service, and repair truck drivetrains and axles.
Program Requirements
DIE 100Introduction to Diesel Technology3
DIE 101Diesel Engine Operation and Repair3
DIE 102Medium/Heavy Truck Suspension and Steering3
DIE 103Medium/Heavy Truck Electricity3
DIE 105Diesel Fuel Systems3
DIE 106Medium/Heavy Truck Brakes3
DIE 107Medium/Heavy Truck Electronics3
DIE 201Preventive Maintenance Inspection3
DIE 202Co-op Work Experience I-Diesel Technology3
DIE 203Truck Heating, Ventilation and Air Conditioning3
DIE 204Service and Parts Management3
DIE 205Co-op Work Experience II - Diesel Technology3
DIE 206Medium/Heavy Truck Drivetrains3
ME 101Welding Technology3
Total Credit Hours42

PLEASE NOTE:  If you originally enrolled at STLCC prior to Fall 2021, you may need to view an archived catalog for your correct program requirements.  Please speak with an advisor or the program coordinator for more information.

New PlanGrids
First Year
Fall Credit Hours Prerequisites Milestones/Notes
DIE 100 Introduction to Diesel Technology3MTH 020 with a grade of "C" or better or satisfactory score on placement test and Reading ProficiencyFirst 8 weeks
DIE 103 Medium/Heavy Truck Electricity3Reading ProficiencyFirst 4 weeks
DIE 107 Medium/Heavy Truck Electronics3DIE 103 and Reading ProficiencySecond 4 weeks
DIE 201 Preventive Maintenance Inspection3DIE 100 and Reading ProficiencyThird 4 weeks
DIE 102 Medium/Heavy Truck Suspension and Steering3DIE 100 and Reading ProficiencyFourth 4 weeks
Credit Hours15
Spring Credit Hours Prerequisites Milestones/Notes
DIE 106 Medium/Heavy Truck Brakes3DIE 100 and Reading ProficiencyFirst 4 weeks; Apply for CS
DIE 101 Diesel Engine Operation and Repair3DIE 100 and Reading ProficiencySecond 4 weeks
DIE 105 Diesel Fuel Systems3DIE 100, DIE 101, DIE 107, and Reading ProficiencyThird 4 weeks
DIE 203 Truck Heating, Ventilation and Air Conditioning3DIE 100 and Reading ProficiencyFourth 4 weeks
ME 101 Welding Technology3Reading Proficiency
Credit Hours15
Summer Credit Hours Prerequisites Milestones/Notes
DIE 202 Co-op Work Experience I-Diesel Technology3DIE 102, DIE 106, DIE 107, and Reading ProficiencyFirst 4 weeks
DIE 205 Co-op Work Experience II - Diesel Technology3Reading ProficiencySecond 4 weeks
Credit Hours6
Second Year
Fall Credit Hours Prerequisites Milestones/Notes
DIE 206 Medium/Heavy Truck Drivetrains3DIE 100 and Reading ProficiencyFirst 4 weeks; Apply for graduation
DIE 204 Service and Parts Management3Reading ProficiencySecond 4 weeks
Credit Hours6
Total Credit Hours42

*Click on the hyperlinked course number to view additional information about the course.

**Students completing a course that has been assigned a MOTR number may transfer that course to any public institution in Missouri. Those who complete CORE 42 requirements will have that verification on their transcript.

*** It is your responsibility to verify that the courses listed above will transfer to the four-year institution of your choice.  Maximize your transfer credits/classes by meeting with an academic advisor.