Detroit Diesel Training: Paths for DD13, DD15 and DD16

By Michael Nielsen, Publisher | 15+ Years in Diesel Repair

Last Updated: October 2026

⏱ Estimated reading time: 12 minutes

Detroit Diesel training reaches technicians mainly through Daimler Truck North America (DTNA), and the public record is thinner than most guides suggest. DTNA runs a free web-based program called Get Ahead for partner diesel schools and dealerships, and it says its courses cover the core requirements of a Systems certification needed for warranty work.

Heavy Duty Journal (HDJ), written by publisher Michael Nielsen, rebuilt this guide in October 2026 from DTNA's own pages, the U.S. Bureau of Labor Statistics (BLS) and Automotive Service Excellence (ASE). Course lengths, class sizes, salary tables, return-on-investment figures and a Detroit certification renewal cycle had no source and were removed.

The guide covers how Detroit training is delivered, the DD13, DD15 and DD16 engines including the coming Gen 6 versions, what a good course should cover, and how manufacturer training fits beside ASE certification. HDJ labels its own judgment as judgment, and every figure carries its source.

Detroit Diesel Training: What Is and Is Not Published

Search results for Detroit Diesel training promise courses with set lengths, class sizes and certificates. As of October 2026, HDJ found no manufacturer page that publishes a course catalog with those details. What DTNA does publish is a program for schools and dealerships, so the useful question is who delivers the training and what credential follows.

DTNA's technician site describes Get Ahead as free web-based training delivered through partner diesel schools and DTNA dealerships. The vehicle curriculum covers heavy-duty truck systems, electrical troubleshooting, electronic systems and HVAC for Freightliner and Western Star trucks. The Detroit engine curriculum is called DD Heavy Duty and covers basic diagnostics and major repair.

That structure matters for how you plan. Get Ahead is built for schools and shops that apply to DTNA, not for individuals who buy a seat. A technician usually reaches it through an employer that is a DTNA service location or through a school that has been approved as a partner.

Detroit Diesel training also differs by audience. A student wants a credential that opens a first job, a dealership technician wants warranty authorization, and a fleet shop wants fewer comebacks on its own trucks. Each goal points to a different provider, so define yours before you compare any Detroit Diesel training offer.

Older articles, including a previous version of this one, described a standalone Detroit certified mechanic credential earned through written and practical exams with a three-to-five-year renewal. HDJ could not trace those details to a manufacturer page, so this guide does not repeat them. The documented credential is the Systems certification described below.

Independent trainers and aftermarket schools also teach Detroit engines. HDJ has no verified way to say which ones DTNA recognizes, so treat a provider's claim of manufacturer authorization as something to confirm with a DTNA dealer before you pay.

DD13, DD15 and DD16: Gen 5 and Gen 6

Detroit's engine page lists the DD13, DD15 and DD16 as Gen 5 engines, alongside the smaller DD5 and DD8. It states the DD16 produces up to 600 horsepower and 2,050 lb-ft of torque. The page does not give displacement or power ranges for the DD13 or DD15, so HDJ does not quote the older figures that earlier guides printed.

Detroit's Gen 6 page does give figures. It lists the DD13 at 12.8 liters, the DD15 at 14.8 liters and the DD16 at 15.6 liters, with the horsepower and torque ranges in the table below. DD13 and DD15 production begins in January 2027, and Detroit says the DD16 will follow with the same upgrades in 2028.

Detroit says the Gen 6 engines use selective catalytic reduction (SCR) aftertreatment and a Detroit 1-Box design with pre-SCR technology that fits the same frame rail space as earlier generations. It also describes a simplified, non-amplified fuel injector design and cites more than 9 million test miles. The page adds that specifications are subject to change.

For a technician, the practical point is overlap. Gen 5 engines will stay in service for years while Gen 6 enters the fleet, so a shop may see both. Ask any course whether it covers Gen 5, Gen 6 or both, because HDJ found no published schedule for when training materials move to Gen 6.

Emissions rules shape the timing. Detroit says the Gen 6 engines are built for the 2027 emissions standards. Heavy Duty Journal's 2027 EPA heavy-duty emissions standards guide explains the federal side, and it is worth reading before you plan training around those engines.

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How Detroit Training Reaches Technicians

DTNA says Get Ahead courses cover the core requirements of a Systems certification, which it describes as necessary to perform warranty work. It adds that DTNA requires its shops to have all technicians Systems certified. For a dealership technician that makes the certification a condition of the job, not an optional extra.

Schools enroll through an application on the Get Ahead page. DTNA says eligible schools must offer an industry-accepted diesel program that awards a degree or certificate and must have a DTNA service network partner, meaning a Freightliner, Western Star or Detroit dealer. DTNA can approve or deny any application.

DTNA cites more than 1,300 primary and partner service locations in the United States and Canada, and 364 U.S. schools with diesel programs based on 2020 National Center for Education Statistics data. Those are DTNA's own counts, and the school figure is not the number of participating schools.

If you are a student, the route to Detroit Diesel training is to pick a diesel program and ask whether it is a Get Ahead partner. If you already work at a dealership, ask your service manager how Systems certification is tracked. Independent shops that are not DTNA locations may have no access to the program.

HDJ did not find a public price list for Detroit classroom courses, and DTNA's page describes Get Ahead as free for approved schools. Any fee you are quoted should come with a written description of what it buys and who recognizes the result.

What a Detroit Engine Course Should Cover

DTNA's page does not publish a lesson plan, so what follows is HDJ's judgment about what a credible Detroit engine course should cover, not a description of any specific program. Use it as a checklist when you compare providers, and expect the best ones to show you a syllabus.

Diagnostics come first. Detroit's diagnostic software is called Detroit Diesel Diagnostic Link (DDDL). HDJ did not find a DTNA page describing its features, so confirm with a provider that you will spend hands-on time with current diagnostic software, retrieving fault codes and reading live data, rather than only watching a demonstration.

Aftertreatment is the second area. Engines from the DD13 to the DD16 use a diesel particulate filter (DPF) and SCR system, and regeneration and fault diagnosis are everyday work. HDJ's DPF regeneration problems guide covers the symptoms a technician meets in the field.

Fuel and air systems are third in any Detroit Diesel training plan. Look for coverage of fuel injectors, the fuel supply, the turbocharger and the electronic control module, plus service procedures for removing and installing them. Ask how much of the course is bench work on real engines versus slides, because the first builds the skill employers pay for.

Engine-specific failure patterns are a fourth. HDJ's DD15 engine problems guide lists common faults on the most widely used platform, and a good instructor should be able to explain how a course prepares you for them.

Documentation is the last skill. Warranty work depends on accurate notes, fault codes and parts records. A course that teaches how to write a repair order that survives a warranty review gives you something the engine itself cannot. Ask whether students practice it.

ASE Certification Alongside Manufacturer Training

ASE certification is separate from manufacturer training, and employers often value both. The ASE T1–T8 page lists the Medium-Heavy Truck series: T1 Gasoline Engines, T2 Diesel Engines, T3 Drive Train, T4 Brakes, T5 Suspension and Steering, T6 Electrical/Electronic Systems, T7 Heating, Ventilation and Air Conditioning, and T8 Preventive Maintenance Inspection.

For Detroit engine work, T2 Diesel Engines and T6 Electrical/Electronic Systems are the closest matches. HDJ's judgment is that a technician studying a Detroit course can use the same weeks to prepare for T2, because both reward understanding of fuel, air and control systems.

ASE says you must pass an ASE test and have full-time, hands-on work experience to become certified. It recommends submitting your work experience form after creating a myASE account, and your certificate is delayed until the form is approved. Registration is required before testing, and after purchase you have 90 days to schedule.

ASE also states that technicians must retest every five years to keep a certification. Older articles said ASE credentials renew through continuing education credits, but the T1–T8 page says to retest. HDJ's ASE T-series 90-day study guide lays out a study plan for the tests.

The ASE Education Foundation evaluates training programs. Its ASE Education Foundation reports about 1,800 schools with ASE training programs and 118,000 students in ASE accredited programs. Its Find a School tool lets you search by location. Accreditation says a program was evaluated, not that it teaches Detroit engines.

Neither ASE nor DTNA says one credential substitutes for the other. A Systems certification shows you can do warranty work on DTNA trucks, while ASE shows broader tested knowledge. HDJ's diesel mechanic certification guide compares the two paths.

Choosing a Training Route

Pick a route by asking who pays, who recognizes the result and how fast you need it. A dealership technician has the clearest path, because the employer tracks Systems certification. A student should favor a diesel program that is a Get Ahead partner. An independent shop owner needs written proof before paying for any course.

• Is the provider a DTNA Get Ahead partner or a DTNA dealership, and can a dealer confirm it?
• Which engines does the course cover: Gen 5 DD13, DD15 and DD16, Gen 6, or both?
• How many hours is the course, and how much is hands-on work on real engines?
• Which diagnostic software will you use, and for how long per student?
• What credential or record do you receive, and who recognizes it?
• What is the total price, including materials, and what is the refund policy?

Treat the answers as a scorecard. Two providers can offer Detroit Diesel training that looks identical in an advertisement, yet differ on hands-on hours, engine generation and recognition. Put the answers side by side, call the dealer for each, and let the written details decide, not the brochure or the price alone.

A provider that cannot answer these questions in writing is telling you something. HDJ's judgment is that vague promises about being recognized by employers are not a substitute for a named dealer or school that will confirm the credential.

Students should also weigh general programs. A community college diesel program teaches fundamentals across brands, and a Detroit-specific course sits on top of that base. HDJ's guide to diesel technician certification programs and career paths shows how manufacturer courses fit into a broader plan.

Prerequisites are another thing to ask about. HDJ found no published prerequisites for Detroit courses, so confirm requirements with the provider. Basic electrical skills and comfort with a laptop are sensible preparation for any modern diesel course, but that is HDJ's judgment.

Career Outlook: What BLS Shows

BLS gives the clearest federal picture of the job. In the BLS Occupational Outlook Handbook entry for diesel service technicians and mechanics, as of October 2026, 2025 median pay for diesel service technicians and mechanics was $61,770 a year, or $29.70 an hour. The same entry counts 316,000 jobs in 2025 and projects 4% growth from 2025 to 2035.

BLS expects about 24,400 openings each year, on average, over the decade. It says employers may prefer applicants with postsecondary education and may require or prefer certification. It also says technicians might need a commercial driver's license (CDL) to test-drive buses and large trucks.

BLS does not publish pay for Detroit-certified technicians or for any manufacturer credential, and HDJ found no other source that does. Earlier versions of this guide printed salary bands by experience level and a 25-year earnings comparison. Those were removed because no primary source supports them.

What the sources support is narrower. DTNA says its shops require Systems-certified technicians, and BLS says certification can be required or preferred. Together they suggest the credential helps you qualify for dealership work, but HDJ will not put a dollar figure on the difference.

Pay for Detroit Diesel training graduates is a local question. HDJ found no national figure that isolates it, so the honest answer is to collect offers. Salary questions are best answered locally. Ask dealers in your area what they pay certified technicians, compare that with independent shops, and weigh benefits, tools and flat-rate rules. HDJ offers this as a method, not a finding.

Frequently Asked Questions

How do I get Detroit Diesel training?

DTNA delivers Detroit engine training through its free Get Ahead program with partner diesel schools and DTNA dealerships. Individuals usually reach it through an employer that is a DTNA service location or through an approved school, so ask a local dealer or school about enrollment.

Is there a Detroit Diesel certification?

DTNA describes a Systems certification as necessary for warranty work and says Get Ahead courses cover its core requirements. DTNA also requires its shops to have all technicians Systems certified. HDJ found no published exam format or renewal schedule for it.

How long is Detroit Diesel training?

HDJ found no DTNA page that publishes a Detroit Diesel training course length. Get Ahead is described as web-based training delivered through partner schools and dealerships, so duration depends on the school or employer. Ask the provider for hours and schedule in writing.

What is the difference between DD13, DD15 and DD16?

On Detroit's Gen 6 page, the DD13 is 12.8 liters, the DD15 is 14.8 liters and the DD16 is 15.6 liters. See the table above for horsepower, torque and production start dates, and note that Detroit says specifications can change.

Does ASE certification expire?

Yes. ASE says technicians must retest every five years to keep a certification. Its T1–T8 page lists the Medium-Heavy Truck series, and certification also requires full-time, hands-on work experience, so plan the retest well before your five years end and watch the registration windows.

How much do certified diesel technicians earn?

BLS lists 2025 median pay of $61,770 a year, or $29.70 an hour, for diesel service technicians and mechanics. It publishes no figure for Detroit-certified technicians, so local dealers are the best source for what a Systems certification is worth in your area.

The Bottom Line

Detroit Diesel training is delivered through DTNA's Get Ahead program, and the documented credential is the Systems certification that DTNA ties to warranty work. Course lengths, fees and renewal cycles are not published, and the Gen 6 engines are coming. Confirm recognition with a local dealer before paying for any course, and add ASE tests for broader credentials.

Michael Nielsen and the Heavy Duty Journal team publish more technician training guides at heavydutyjournal.com. Check current details with DTNA, a local dealer, ASE and BLS before you act on any figure here.