GM AIR BAG DIAGNOSTICS

Airbags are now standard equipment on all GM vehicles. GM had already began installing Airbags into most of their vehicles prior to becoming mandatory by law. Type of Airbag Systems used by GM in the last 12 years have changed significantly. How does this effect service?

This course will cover 1990 to 1998 Airbag systems used by GM over the past 12 years. Repair procedures, service precautions, scan tool diagnostics, and component replacement will be highlighted. New service tools will be demonstrated.

The students will perform scan tool diagnostics on fully operational simulator. Customer calls and asks "My Airbag light is on, Can I Drive my car ?"

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GM Truck OBD II Fuel Injection 

GM Trucks and SUVs continue to be among the most popular vehicles sold. They have experienced more technical and mechanical advancements in the past 8 years than any other time period.

OBD II diagnostics, 4-wheel ABS, Airbags, CSFI, Coil per Plug Ignition and how the addition of a Body Computer (BCM) are among the technical advancements that require an Increase In understanding and diagnostic skills to properly service these vehicles.

This course will include highlights of the new accessories and electrical systems found on theses vehicles. The use of a BCM on newer pick-ups will be introduced. An overview of the all-new 4200 engine will be covered. Fuel delivery and Ignition systems will be detailed for the 4800, 5300, and 6000 engines. The CSFI fuel delivery as well as Ignition systems will be reviewed. Scan tool diagnostics and trouble shooting of the Ignition system will also be taught.  

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During this course we will discuss in detail late model GM Duramax engines. Although the models presented will apply to 2010 & newer Duramax engines with full emission controls, much of the material can be applied to earlier years. After a quick update on relevant mechanical and cooling system enhancements, the air intake system will be discussed with emphasis on the variable output turbocharger design, operation, control and service. Cold starting systems will be covered. Both low and high pressure fuel systems will be described as well injectors and pressure control. Injector and fuel system lab scope patterns will be analysed and quick diagnostic tips will be shared. Late model Duramax diesel engines are equipped with full emission controls therefore EGR, Closed Crankcase Ventilation, Diesel Particulate Filter and DEF systems will be covered in detail from a ‘practical’ service perspective. Pattern failures, scope diagnostics, scan tool data and procedures will be included throughout the course.

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This course covers some of the unique engine management features incorporated with GM Trucks.  An operating 1994 GM 4.3L central port injection system, which demonstrates the unique fuel delivery system used on these vehicles, will be utilized in class.  Intake manifold tuning, linear EGR and dual knock sensors will be some of the inputs covered.  The newer CSFI system and the new GM ENHANCED ignition system found on 96 and newer trucks will also be covered. Schematic, DVOM and Labscope Diagnostics will be covered.

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