Diesel Mechanic Training Program Overview
Train hands-on for a career that keeps essential industries like agriculture and transportation running.1,18 In less than a year, UTI’s Diesel Technology program can help you build real-world skills, as you train to turn your passion for power into a profession.7
Program Length
45-51 Weeks*
Dependent on location
Course Schedule
Afternoon
Night
Morning
*Dependent on location
Course Information
Diploma
Certificate
Admission Requirements
No prior experience is required — we’ll build your skills from the ground up.
Here’s what you will need to apply:
Be at least 18 years old, or 16 with a guardian to execute enrollment.
Have a high school diploma, GED or equivalent.
Diesel Mechanic Careers
From long-haul transportation and construction to agriculture, power generation and beyond, diesel technicians work wherever engines are built for endurance. Train for a role that powers America.
Roles UTI grads are prepared for:
Diesel technician
Heavy equipment repair technician
Power generation technician
Agriculture technician
Roles you may be able to pursue in time with hard work and experience:
Mobile diesel mechanic
Master technician
Fleet Technician
Shop Foreman
Diagnostic Technician
Service manager
Shop Owner
What Will I Learn in UTI’s Diesel Mechanic Classes?
You’ll get hands-on with the same systems and tools found in today’s heavy-duty vehicles. No filler courses; just the skills that matter on real shop floors.33
Hydraulics
Learn how to diagnose, repair and maintain hydraulic systems using test simulators and real equipment. Train with hydraulic trainers, hose crimp machines and mini excavators.
Steering and Suspension Systems
Train to diagnose and repair wheels, tires, steering systems and alignments using original equipment manufacturer (OEM) alignment equipment and power steering analyzers.
Drivetrain
Gain hands-on skills with clutches, transmissions, drivelines and differentials using OEM tools and diagnostic software.
Brakes
Learn the fundamentals of hydraulic and air brake systems, including ABS and traction control. Practice diagnostics on heavy-duty trucks using computer- based software.
Diesel Engines
Learn how to disassemble and rebuild diesel engines, perform diagnostics and service key systems like turbochargers, cooling and exhaust.
Transport Refrigeration
Understand refrigeration theory, perform system diagnostics and service Thermo King® and Carrier® systems following EPA 608 standards. Gain exposure to energy-efficient refrigeration systems used in freight, food logistics and medical transport.
Specialized Diesel Technician Training
Level up your skills with UTI’s Manufacturer-Specific Advanced Training (MSAT) programs.
Train with industry-leading brands and equipment.
Learn advanced diagnostic technologies.
Prepare for manufacturer-specific credentials.
Craft your own training path. Apply for advanced training with top manufacturers and focus on building the skills that interest you most.
Learn More
Diesel ASE Certification
UTI’s diesel mechanic training program is accredited by the ASE Education Foundation, part of the National Institute for Automotive Service Excellence (ASE).16 That means your training aligns with ASE standards and counts toward one of the two years of work experience required to test for certification.
Why Choose UTI’s Diesel Mechanic School?
Build confidence that lasts beyond the classroom and feel supported every step of the way.
Build confidence that lasts beyond the classroom and feel supported every step of the way.
Financial aid, scholarships and grants available to those who qualify.10
Academic support through tutoring and a 1:1 success coach.
Job placement assistance as a student and alum.
Lifetime refresher course to keep your skills up to date at no cost.10
37% of UTI's Auto/Diesel graduates reported receiving employer incentives, such as sign-on bonuses, relocation assistance, tool allowances or some tuition reimbursement, based on a 2025 survey.134
Upcoming Start Dates
Show Campuses
March 9th, 2026
Spots Still Open
April 20th, 2026
Spots Still Open
Frequently Asked Questions
Diesel technicians are trained to service vehicles and equipment powered by diesel engines, like trucks, buses and generators. While some skills overlap with automotive repair, diesel mechanics specialize in high-torque, heavy-duty systems.
Successful diesel mechanics are strong problem-solvers with sharp attention to detail. They know how to diagnose issues, use precision tools and work confidently with advanced diagnostic and repair technology. At UTI, you can build these skills through hands-on training that mirrors real shop environments, so you can graduate ready to take on the challenges of today’s diesel industry.1,18
Diesel students wear:
· An approved UTI uniform shirt
· Solid-colored pants free of rips or tears (jeans, work pants or corduroys are fine)
· A student ID badge
· Optional: A UTI-branded, military or plain baseball cap
In the labs, they wear:
· Shoes or boots with oil- and slip-resistant soles and strong uppers to protect their feet
· ANSI-approved safety glasses with side shields
You'll receive two uniform shirts, your ID badge and safety glasses during New Student Orientation. You can choose your own pants and footwear within the approved dress code.
To become an ASE-certified diesel mechanic, you’ll need work experience and to pass the ASE exam. Training at UTI counts toward one of the two years of experience required and prepares you with the skills and knowledge to test confidently.1
According to the Bureau of Labor Statistics, the median annual salary for diesel mechanics in the United States was $60,640 in May 2024.29 This means half of diesel earned more and half earned less. Keep in mind that salary depends on several factors, including experience, employer, demand and cost of living in the area.
Your admissions fees cover a digital multimeter and a laptop for coursework. These are the only items you’ll need to purchase. If you already own equipment that meets UTI’s requirements, those fees may be waived. All other professional-grade tools and shop equipment needed for hands-on training are provided on campus.18
