This case study I did on a body shop vehicle covers a lot of starter circuit theory and operation, as well as practical testing methods, making it great viewing for anyone working in the field.

This is a great review of section 3 material in my book, specifically about testing a ground side switched solenoid.

During this diagnosis of an EGR trouble code on this Impala, I have the opportunity to go into detail about computer controlled solenoids, duty cycle, and how they relate to valve position.

2002 Chevy Silverado 4.8L with a P0449 EVAP system Vent Control Circuit Low trouble code.