NEXIQ eTechnician is a special truck diagnostic software for heavy duty.Nexiq eTechnician diagnostic software is a PC based software,eTechnician 2.0 gives you the data and the support required to stay competitive in today’s trucking industry. Heavy-duty diagnostics on your PC was never this good—until now. We’ve combined extensive coverage for everything from commercial vehicles right down to light and medium-duty trucks. That gives you diagnostic capability for engines, transmission, brakes, body and chassis, and more.