Experience diagnosing unusual electrical problems in any system including Electrical Control Module/Unit interfaces, wiring, sensors, and controls, diagnosing unusual engine problems, diagnosing unusual problems with cab components, drive train, and braking components. Many other various other vehicle items [i.e. telematics, camera systems, steering, manual transmissions, automated transmissions, high pressure fuel injection systems, HVAC, charging and cranking systems, APU's and Air Disc Brakes].