Diesel Mechanics

An instructor surrounded by three male students uses an electronic device to diagnose issues with a diesel truck behind them.

Diesel Mechanics

Subject Area: Auto Tech, Mechanics and Transportation

Award: Diploma

Minimum Credits: 48

Location: Peosta

Entry: Fall


The increased mobility of people and industries has caused a large growth in the diesel industry. Where there are diesel engines, there is a need for mechanics to keep them running. As a diesel mechanic, students will be prepared as an all-around mechanic capable of performing work on all systems of the vehicle. Students must exhibit an attitude compatible with work requirements, demonstrate the ability to work with coworkers and possess competencies in electrical systems, fuel systems, drive trains and engines. Competency-based training will be offered on front-to-rear maintenance of diesel equipment.

Admissions Requirements
  1. Apply for admission.
  2. Submit official high school, high school equivalency and/or college transcripts to the Admissions Office of the campus you plan to attend.
  3. Complete ACCUPLACER® reading and writing assessment. Testing may be waived based on previous college coursework or submission of valid ACT®, ACT Compass® or ALEKS® test scores. Scores are valid for three years.
Academic Requirements

View the printable Ed Plan.

Term 1
AUT:820 Automotive Tuneup 2.0
AUT:829 Gas Engine Principles 4.0
AUT:830 Gas Support Systems 4.0
DSL:353 Diesel Engine Principles 4.0
SDV:135 Job Seeking Skills 1.0
SDV:179 The College Experience 3.0
WEL:330 Welding Fundamentals 1.0


Term 2
AUT:321 Automotive Transmissions 2.0
DSL:449 Diesel Support Systems 3.0
DSL:533 Drive Trains 3.0
DSL:632 Brakes - Diesel 2.0
ELT:145 Electrical Systems - Diesel 4.0
* Communication Elective 3.0


Term 3
DSL:733 Air Conditioning 3.0
DSL:803 Equipment Repair - General 6.0
* Math Elective 3.0


Communication Electives: COM:723, ENG:105
Math Electives: MAT:102, MAT:744, MAT:772, MAT:773, transfer-level MAT

Note: Prior to the completion of Term 1, students are required to provide their program faculty with a copy of their First Aid/CPR certificate.

Employment Information

With an annual income range of $29,427 - $42,512 and a projected growth of 2.6%, the career outlook for Diesel Mechanics graduates is growing.

Source: EMSI; Salary range represents 10th percentile - median annual wage for related occupations in the NICC district. Growth rate based on projections from 2016-2020.

View Gainful Employment information for this program.

Experience/Skills/Personality Traits

Diesel mechanics need excellent diagnostic and problem solving skills. Basic math, communication, and computer skills are also important. You must be patient and thorough and will need to develop excellent attention to detail, especially when troubleshooting and solving various engine problems and repairs.

Employers of NICC Alumni

Black Magic Performance, Hiawatha, IA
Brown National Lease, Dubuque, IA
CJ Moyna and Sons, Elkader, IA
Farmers Shipping Association, Dyersville, IA
Foodliner Inc, Dubuque, IA
Fourwald Center, Monona, IA
Guy's Towing Service, Galena, IL
Hawkeye Truck & Trailor, Dubuque, IA
Hutchison, Inc., Manchester, IA
Hurst Logistics, Dubuque, IA
Huss Implement, LaMotte, IA
J.J. Scheckel, Bellevue, IA
John Deere, Dubuque, IA
Lube Pros, Carol Stream, IL
Ludwig Custom Work, Worthington, IA
Pattison Brothers, Garnavillo, IA
Peterbilt, Cedar Rapids, IA
Plant Site Logistics, Dubuque, IA
Roeder Brothers Inc, Bellevue, IA
Sinclair, Scales Mound, IL
Skyline Construction, Dubuque, IA
Summers Enterprise, Masonville, IA
Truck Country, Dubuque, IA
Trucking Co., Durant, IA

Sample Job Titles

Service Tech

For additional job titles, visit O-Net.


Lenny Graves
Dean of Career and Technical Education
800.728.2256, ext. 240

Pat Osterhaus
Diesel Mechanics Instructor
800.728.7367, ext. 233