Diesel & Heavy Equipment Technology

Diesel & Heavy Equipment Technology

Associate of Applied Science Degree (AAS)

The Diesel & Heavy Equipment Technician Associate of Applied Science (AAS) Degree program prepares students with the skills required to maintain everything from trucks and tractors to ferries and forklifts. Our ASE-based curriculum is certified to the latest in NATEF standards, and will prepare you for all aspects of diesel and heavy equipment repair. Advanced standing may be granted for work experience and/or related training. Students are responsible for obtaining required tools before instruction begins.

The Associate of Applied Science Degree builds upon previously acquired knowledge and skills to develop leadership and communication abilities.

Estimated Length of Completion

Degree Quarters Credits
Associate of Applied Science Degree (AAS) Full Time: 7
Part Time: Part Time Option Not Available
121.0 - 126.0

Program lengths are estimates, not guarantees. For the most current program information, please check with the program contact.

There are no entry requirements for this program.

Students are strongly encouraged to meet with an advisor to discuss specific career goals and recommended coursework.


  • Agriculture Diesel Engine Technician
  • Bus and Truck Mechanic and Diesel Engine Specialist
  • Commercial Shipping Diesel Engine Technician
  • Construction Industry Diesel Engine Technician
  • Forestry & Logging Diesel Engine Technician
  • Freight Rail Diesel Engine Technician
  • Marine Vehicle & Equipment Dealership Diesel Engine Technician
  • Transportation/Commercial Trucking Diesel Engine Technician
  • Truck & Heavy Equipment Dealership Diesel Engine Technician
  • Waste Management Diesel Engine Technician

For current employment and wage estimates, please visit the following online resources and search for the relevant occupational term:

All costs are estimates and are not guarantees. For the most current program information, check with an adviser by calling 206.934.5391. There are additional costs for books and supplies. Each student is responsible for the purchase of certain supplies and required tools before the instruction begins.

Part Time

Hours may vary based on specific program requirements.


Coursework

Course Course ID Credits Availability

This course focuses on introducing students to keyboarding, word processing, spreadsheet applications, email, graphic presentations and performing Internet research. Students will also practice effective communication skills and become familiar with industry specific software. Prereqs: Compass W65, R75, PA28. Coreqs: MVM 101, MAT 110, HDM 171.

BUS 159 5.0

This course focuses on skills required by the National Automotive Technicians Education Foundation (NATEF) including safety procedures compliant with OSHA regulations, hand tools, power tools, measuring tools, and equipment used in the repair of both trucks and equipment in the heavy duty diesel mechanic industry. Inspection and maintenance are also a major part of this course. Prereqs: MVM 101, BUS 159, HDM 171, MAT 110. Coreq: HDM 105.

HDM 100 8.0

This course focuses on skills required by the National Automotive Technicians Education Foundation (NATEF) including safety in welding, oxy-acetylene welding, oxy-acetylene brazing, oxy-acetylene cutting, arc welding as well as MIG welding. Identifythe type of welding process to be used when joining various types of metals in different situations. Prereqs: MVM 101, BUS 159, MAT 110. Coreq: HDM 100.

HDM 108 8.0

This course introduces students to skills necessary for the National Automotive Technicians Education Foundation (NATEF) certification including electrical theory, diagnosing electrical system problems, removal, repair and installation of electrical components from vehicles. The function and construction of each component, diagnosis and service procedures will be covered. Prereqs: MVM 101, BUS 159, HDM 171, MAT 110 with a 2.0 or higher or by instructor permission. Coreq: HDM 115.

HDM 110 8.0

Building on the introductory course, students will focus independently on electrical theory, data scan tools, and diagnosing electrical and electronic system problems including truck accessories necessary for NATEF certification. The function and construction of each component, and diagnosis and service procedures will be covered. Prereqs: MVM 101, BUS 159, HDM 171, MAT 110 with a 2.0 or higher or by instructor permission. Coreq: HDM 110.

HDM 115 8.0

This course will cover diagnostic theory, systems problems and evaluations, removal, repair and installation of tires, alignment, steering and suspension components of heavy duty diesel vehicles to meet NATEF certification. Prereqs: MVM 101, BUS 159, HDM 171, MAT 110 with a 2.0 or higher or by instructor permission. Coreq: HDM 125.

HDM 120 8.0

Contents of this course include: diagnostic theory; systems problems and evaluation, removal, repair and installation of hydraulic, air brake and ABS components from vehicles to meet NATEF certification. The function and construction of each component, and their diagnosis and service procedures will be covered. Prereqs: MVM 101, BUS 159, HDM 171, MAT 110 with a 2.0 or higher or by instructor permission. Coreq: HDM 120.

HDM 125 8.0

This course will focus on theory, systems problems and evaluation, reading and reviewing diagrams, and removal, repair and installation of hydraulic and pneumatic components of heavy duty diesel vehicles to meet NATEF certification. The function and construction of each component, and their diagnosis and service procedures will be covered. Prereqs: MVM 101, BUS 159, HDM 171, MAT 110 with a 2.0 or higher or by instructor permission. Coreq: HDM 135.

HDM 130 8.0

Contents include: Theory, diagnosing system problems and evaluation, and removal, repair and installation of heavy duty diesel drive train components from vehicles to meet NATEF certification. The function and construction of each component, and their diagnosis and service procedures will be covered. Prereqs: MVM 101, BUS 159, HDM 171, MAT 110 with a 2.0 or higher or by instructor permission. Coreq: HDM 130.

HDM 135 8.0

This course focuses on theory, diagnosing system problems and evaluation, and removal, repair and installation of heating, ventilation and air conditioning (HVAC) components from vehicles to meet NATEF certification. The function and construction of each component, and their diagnosis and service procedures will be covered. Prereqs: MVM 101, BUS 159, HDM 171, MAT 110 with a 2.0 or higher or by instructor permission. Coreq: HDM 145.

HDM 140 8.0

This course focuses on theory, diagnosing system problems and evaluation, and removal, repair and installation of gasoline engine components from vehicles to meet ASE standards. The function and construction of each component, and diagnosis and service procedures will be covered. Prereqs: MVM 101, BUS 159, HDM 171, MAT 110 with a 2.0 or higher or by instructor permission. Coreq: HDM 140.

HDM 145 8.0

Contents of this course include: Diesel engine theory, diagnosing system problems and evaluation, and removal and installation of a diesel engine from a vehicles to meet NATEF certification. The function and construction of each component, and their diagnosis and service procedures will be covered .Prereqs: MVM 101, BUS 159, HDM 171, MAT 110 with a 2.0 or higher or by instructor permission. Coreq: HDM 155.

HDM 150 8.0

This course covers advanced theory, diagnosing systems problems and evaluation, and the rebuilding of a diesel engine to meet NATEF certification. The advanced function and construction of each component, and their diagnosis and service procedures will be covered. Prereqs: MVM 101, BUS 159, HDM 171, MAT 110 with a 2.0 or higher or by instructor permission. Coreq: HDM 150.

HDM 155 8.0

A course to obtain a lift truck operator's safety certification card. Student will learn current regulations as well as demonstrating practical fork lift operation.

HDM 171 2.0

Credit range: 1 - 7
Total required credits for HDM 197: 1 - 6

Requires program advising. Please see a program advisor or counselor for details.

Gain experience and practice with mechanical repair procedures and skills performed regularly on the job site. Orientation to Internship required prior to registration. Permission only.

HDM 197 7.0

This introductory course covers safety and Material Safety Data (MSD); tools and equipment;gathering vehicle maintenance information; repair orders, repair manuals, parts and time estimating guides; component identification; component theory and fasteners. Prereqs: Compass scores. Coreqs: HDM 171, MAT 110, BUS 159.

MVM 101 8.0
Course Course ID Credits Availability

Covers skills and strategies needed to meet writing demands in college and on the job. Prereq: Satisfactory performance on English placement test. Fee(s) and meeting dates dependent on section choice, read http://sites.southseattle.edu/online/welcome-letter and email instructor. Find your instructor's email at: http://www.seattlecolleges.com/DISTRICT/employeedirectory/directorysearch.aspx

ENGL 105 3.0

Emphasis on applications of mathematics to vocational and technical courses. Prereq: Satisfactory performance on Math placement test. Section 70: online fee; email instructor and read http://sites.southseattle.edu/online/welcome-letter. Find your instructor's email at: http://www.seattlecolleges.com/DISTRICT/employeedirectory/directorysearch.aspx

MATH 110 3.0

Covers dynamics of workplace organizations. Theory and concepts include major topics: communication, conflict, leadership, group process, ethics and management. Primarily for vocational students. Section 70 online fee, contact instructor and read http://sites.southseattle.edu/online/welcome-letter Find your instructor's email at: http://www.seattlecolleges.com/district/employeedirectory/directorysearch.aspx PREREQ: ENGL 105; ASSET: 43 W, 43 R; COMPASS: 68 W, 81 R

PSYC 240 3.0