The Electronic/Electrical changes to late model vehicles are not limited to fuel delivery and ignition systems alone.  Every manufacturer continues to make huge changes to basic electrical systems.  A Body Control Module (BCM) now controls many components that were formally hardwired.  Along with the BCM module becoming a standard feature, the number of new computers on a vehicle continues to increase.  Many basic functions are dependent on inter module communication.

Sound complicated…?  Sure is, but is avoiding keeping up with the changes the right answer. 

A proper understanding of the electrical system on a newer GM vehicle will go a long way to making your job easier.  In some cases a repair on a newer vehicle may be simpler than repairing something on an older vehicle if you understand some of the On Board Diagnostics available to you.

Body computers have become standard equipment since 98/99 on GM trucks regardless of the number of options or equipment level package.  This course will deal with the operation of the BCM computer.  BCM computer Inputs and Outputs will be taught as well as some additional accessories.  Additionally, network communications between the modules will also be taught.  Don’t miss the opportunity to learn this essential information.

COURSE OUTLINE

1. Introduction
   1. Basic S/T Electrical System Layout
   2. Basic C/K Electrical System Layout
   3. OPERATION AND DIAGNOSIS OF THE FOLLOWING #2-#7
2. Inter Module Communication
   1. Serial Data
   2. VART
   3. Class 2 Communications
   4. Diagnosing no communication
3. Truck Body Computer Module
   1. Input Signals
   2. Output Controls
   3. Power Control
4. Smart Cluster (IPC)
5.  Exterior Lighting (BCM Controller)
6. Interior Lighting (BCM Controller)
7. Remote Keyless Entry

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