Duramax L5P Diesel Diagnostics

SKU: 24030623

List: Full Name, Email, Phone # of each attendee

Price will increase to $299 after
February 14, 2024!

DatesWednesday, March 6 - Thursday, March 7 Add to Calendar
Time6:30 p.m. to 10:00 p.m. Each Evening
PlaceStaybridge Suites

3420 Norman Berry Drive
Hapeville, GA 30354
Map →
InstructorWally Mouradian
ContactKristy Huerta (800) 233-3182 Ext. 222


The 2017 & newer Duramax L5P and the related L5D are a huge improvement over LML, LGH and earlier generation Duramax applications. However, service information is even worse! It’s not so much ‘terrible’ as ‘nonexistent’. There are flow charts, but there’s no explanation as to how systems operate and how components interact. The L5P also signaled a shift from Bosch to DENSO fuel systems, the addition of a brushless low-pressure pump, the move to an electronically controlled turbocharger, and many more changes. These are significant engine management differences that just aren’t explained. To help you out, we’ve collected the specific ways that these new systems fail and offer lots of known good data and field-proven test procedures to diagnose them. Specifically, attendees will be able to:

  • Locate boosted duct leaks, including the use of the ‘leak PID’
  • Understand how sensor faults cause misleading injector timing and volume codes
  • Identify erratically named Duramax L5P sensors
  • Identify symptoms & solutions to MAP clogging
  • Examine fuse boxes and connectors for common failure points
  • Determine hard-start and no-start root causes
  • Apply relearns and system tests
  • Includes emissions: EGR, DPF, DOC & SCR

The seminar covers the ‘inside information’ you need. We will help you make a better possible cause list and show you simple tests to trim that list without taking too much apart. We’ve also created graphics that are missing from service information for the intake, fuel and emissions systems that show the ‘real’ component locations and flow through systems. This seminar is what you need to win against these diesels. 


Mission: To provide superior quality training and create industry-leading programs that produce consciously competent technicians that provide safe and proper repairs of current and future automotive technologies.


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