DIESEL MECHANIC
Fixes the trucks that move America. Steady demand, transportable skills, growing complexity with modern emissions systems. Illinois is not a right-to-work state — union density is higher than average and prevailing wage rules cover most public projects.
The License.
Check with Illinois directly — licensing for diesel mechanicvaries by municipality in this state. There is no single state board that we can point to with confidence for this trade. Contact your local city or county building department, or check the state labor department's website.
The Money.
Pay data for this trade in Illinois. BLS metro-level data was not available for this combination. National medians shown below.
| Stage | Hourly range | Approx. annual |
|---|---|---|
| Year 1 apprentice | $18–$24/hr | $36,000 – $48,000 |
| Journeyman scale | $28–$45/hr | $56,000 – $90,000 |
| BLS national median | — | $60,010 |
| BLS top 10% | — | $91,860 |
Illinois is NOT a right-to-work state. Union scale in Illinois's major metros typically runs 20–40% above the national median. Prevailing wage laws apply to most public-sector projects.
The Path.
In Illinois, apprenticeships are administered through the federal RAPIDS system via the U.S. Department of Labor. To find registered programs, go to apprenticeship.gov and filter by state. Most joint apprenticeship training committees (JATCs) also accept direct applications.
- · Teamsters (some fleet positions)
The Exam.
Automotive and diesel technician licensing is not universally required by state — ASE certification is the industry standard and is portable across states. Some municipalities require shop licenses even where state licensing is absent. Prevailing wage requirements in Illinois apply to most public-sector projects, which ties exam and licensure to wage scale compliance for contractors.
Be honest about pass rates. Many licensing boards do not publish them. When they do, first-time pass rates for journeyman exams in the trades typically run 50–75%. Preparation time varies — most serious candidates spend 60–120 hours on exam prep. Use code books from the correct edition, not what's currently in print.
What recruiters won't tell you.
- 01UTI, Lincoln Tech, WyoTech diesel programs cost $30K–$50K — community colleges do this for under $10K.
- 02Bring-your-own-tools is the norm. Expect to spend $20K+ on your toolbox over your career.
- 03Dealer jobs pay flat-rate (book hours) — top mechanics crush it, slow learners struggle.