Mechanics, Maintenance & Manufacturing training

Diesel Mechanic Training

Learn what diesel mechanics do and how they do it: a semi-in-depth, practical course covering the role, vocabulary, common procedures, safety and career launch.

Updated By the Career Education Institute Curriculum Team
Enroll nowView syllabus
What you’ll learn in Diesel Mechanic training

A practical, general introduction to the diesel mechanic job: what the role involves, 15+ key terms, how to perform common tasks such as perform a truck PM service and check air brake pushrod stroke, safety essentials and how to launch your career. Online, self-paced, about 10 hours, $89.99.

  • Tuition
    $89.99
    Volume pricing from 2 seats
  • Length
    10 hours
    10 modules
  • Format
    Online
    Self-paced, any device
  • Access
    12 months
    LMS access
  • Level
    Beginner
    To intermediate
  • You receive
    Certificate
    Of completion

Learning outcomes

By the end of this course you will be able to:

  • Explain what a diesel mechanic does day to day, where they work and how the role fits into the team
  • Use 15+ essential diesel mechanic terms correctly
  • Walk through perform a truck PM service, check air brake pushrod stroke, and read heavy-duty fault codes step by step
  • Identify the tools, equipment and technology used on the job
  • Apply core safety, compliance and professional standards
  • Map your path into the field, including credentials such as ASE Medium-Heavy Truck (T-series)

Course syllabus

10 modules, about 10 hours in total.

MODULE 01Introduction to the Diesel Mechanic Role50 min
  • What diesel mechanics do and why the role matters
  • Where they work: settings, employers and teams
  • Pay, job outlook and the career ladder
  • Professional and ethical expectations
MODULE 02A Day on the Job35 min
  • A realistic shift, start to finish
  • Schedules, shifts and workload
  • Working with supervisors, coworkers and customers
  • The best and hardest parts of the job
MODULE 03Essential Diesel Mechanic Vocabulary1 hr
  • Key term: Compression ignition
  • Key term: DPF
  • Key term: Regeneration (regen)
  • Key term: DEF
  • Key term: SCR
  • Plus 10 more terms with practice drills
MODULE 04Core Duties and Responsibilities1 hr
  • Perform preventive maintenance inspections and services
  • Diagnose problems using diagnostic software and test equipment
  • Repair or rebuild engines, transmissions and drivetrains
  • Inspect and repair air brakes, steering and suspension
  • Service aftertreatment systems such as DPF, DEF and SCR
MODULE 05Common Tasks, Step by Step2 hr 10 min
  • How to perform a truck PM service
  • How to check air brake pushrod stroke
  • How to read heavy-duty fault codes
  • Common mistakes and how to avoid them
MODULE 06Tools, Equipment and Technology50 min
  • OEM diagnostic software and laptops
  • Multimeters and scan tools
  • Torque wrenches and impact tools
  • Lifts, jacks and stands
  • Pressure testers and gauges
MODULE 07Safety, Compliance and Professional Standards1 hr 10 min
  • Chock wheels and support vehicles with jack stands. Never rely on a jack alone
  • Lock out and tag out vehicles and equipment during repairs
  • Wear eye protection and gloves when working with fluids and pressurized systems
  • Cage tires before inflating split-rim or multi-piece wheels
MODULE 08Skills Employers Look For50 min
  • Diesel engine diagnostics
  • Air brake systems
  • Electrical and electronic troubleshooting
  • Problem-solving
  • Attention to detail
MODULE 09Launching Your Diesel Mechanic Career50 min
  • Education and training pathways
  • Credential overview: ASE Medium-Heavy Truck (T-series)
  • Credential overview: DOT annual inspector qualification
  • Resume and interview preparation
  • Your first 90 days on the job
MODULE 10Final Knowledge Check50 min
  • Comprehensive practice exam with explanations
  • Certificate of completion on passing

Who this training is for

  • Students: find out what the diesel mechanic job is really like before choosing a program or major.
  • Career changers: test-drive the field and build vocabulary and confidence before investing in formal training.
  • New hires and employers: shorten ramp-up time with a consistent foundation for every new diesel mechanic.

Pricing

$89.99 per learner. Buying for a team? Volume pricing applies automatically from 2 learners.

SeatsDiscount
2 to 101% off
11 to 202% off
21 to 503% off
51 to 1005% off
101 to 2507% off
251 to 5008% off
501 to 1,00010% off

Free preview lessons

Sample the course material for free:

Why train for this career

Diesel mechanics inspect, diagnose, maintain and repair diesel engines and the trucks, buses and equipment they power, from engines and air brakes to electronics and emissions systems. BLS reports a median wage of $61,770 (May 2025) and about 24,400 openings per year. Read the full diesel mechanic career profile or see salary details.

Enroll in Diesel Mechanic Training

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Course Diesel Mechanic Training · 10 hours · $89.99 per learner

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Diesel Mechanic training FAQ
How long is the Diesel Mechanic training?
About 10 hours, online, self-paced. You get 12 months of LMS access, so you can learn around work or school.
How much does the Diesel Mechanic training cost?
$89.99 per learner. Volume pricing applies automatically from 2 learners, up to 10% off for large groups.
Is the course online?
Yes. The course runs on our online learning platform (LMS). After you enroll, we email your login details.
Will this course make me a licensed or certified diesel mechanic?
No. This is a general career-preparation course. It does not by itself grant a state license, national certification or academic credit. It is designed to help you understand the job and prepare for the formal training, exams and interviews that follow.
Who is this course for?
Students exploring careers, adults changing careers, new hires who want a faster ramp-up, and employers onboarding diesel mechanics.
How do I enroll?
Use the enrollment form on this page. It opens a pre-filled email to our team, and we reply with your payment link or invoice and your LMS access. You can also call 1-866-429-6742.
Do you offer group or employer pricing?
Volume pricing from 2 seats. Choose “My team or employees” on the form or visit our employer training page.
What do I receive when I finish?
Certificate of completion from Career Education Institute after you pass the final knowledge check.


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