Perform repairs to the vehicle manufacturers' specifications, including engines, transmissions, clutches, drive-lines, differentials, steering and suspensions, fuel and ignition systems, exhaust systems (including regeneration systems), intake systems, electrical systems, brake systems, HVAC systems, hydraulic liftgates, and other mechanical and electrical systems. Use various proprietary diagnostic software to diagnose, examine, and investigate heavy duty and light duty electric vehicles to determine causes of defective operation of electrical components, starters, pumps, air suspension systems, pneumatic systems, passenger lift assemblies, battery coolant systems, air conditioning systems, and other EV components.