LBT-428 LB7 Fuel Systems & Components: Major Changes Through the Years



GM’s  LB7 diesel engine is a 6.6 liter, 8 cylinder powerhouse was manufactured from 2001 to 2004. It features a cast iron block with aluminum cylinder heads and is fueled by a high-pressure common rail injection system. It produced 310 hp and 520 ft. lbs. at 1800 rpms. A commercial grade, 5 speed Allison transmission was a popular option at that time. Many vehicles with this powertrain are in use to this day.  This program will take you through the diagnostic procedures and component testing techniques to keep these engines running for years to come.  AVI Instructor Tom Rayk goes through servicing the low and high pressure fuel system, air induction system along with revised emission components plus much more.

Course Objectives:

  • Understanding Low Side Fuel Stress Test
  • Understanding Procedures with Scan Tool for Resets and Relearns
  • Know how to perform a Cylinder Contribution Test
  • Understanding Important Data PID List
  • Know how to perform a Bi-directional Test
  • Know the newest parts for a more quiet operation (Oil Pan, Valve Cover, and Fuel System)
  • Understand how to perform Sensor Testing
  • Understanding Service and Maintenance

Runtime: 3 hours 22 minutes

Study Hours: 5.2


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