GM has used numerous types of ignition systems over the past years and throughout their various vehicle lines. Many of the systems currently in use are many of the Ignition systems currently In use are older Ignition systems that have evolved over the past number of years. Keeping up with the numerous types of Ignition systems can be overwhelming. When the vehicle is in your bay you are required to make a quick and accurate diagnosis of components that are sometimes hard to access. Flow charts can seem inconclusive. More often that not the problem is intermittent. Maybe it really did need both crank sensors and a cam sensor and a module and a PCM and a coil all at once??? This course is designed to help you diagnose and repair various GM ignition systems and related problems. We will focus primarily on GM vehicles from the early 1990's to the early 2000's. The information presented here will help you diagnose quickly and efficiently, the various GM ignition systems. A working model of an Opti-Spark will be used to facilitate training. This course Is designed for both apprentices and journeyman technicians.
COURSE OUTLINE
- Introduction to GM Ignition Systems
- Acronyms
- Review questions
- Basic ignition operation & fundamentals
- System identification & classification
- Triggering
- Distributor ignition systems
- HEI, EST
- Understanding the 4 wire interface
- Opti-Spark
- High Voltage Switch (Enhanced)
- Electronic Ignition systems
- C3I Diagnostics
- Direct Ignition System Diagnostics
- Integrated Direct Ignition Diagnostics
- Up-Integrated Direct Ignition
- Coil Near Plug (Coil Per Cylinder)
- Integrated Coil Electronics
- Driveability & Diagnostics
- Misfire Diagnostics
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In Class