McALLEN — Demand for skilled workers in the diesel trucking industry is surging.Leading young students through the various facilities at South Texas College’s Technology Campus, faculty with the college’s Diesel Technology Program say STC is working to fill a massive void for qualified technicians.“Right now, the diesel industry is in a deficit,” said STC faculty Justin Garza, program coordinator for the Diesel Technology Program. “We need drivers, and in order for those drivers to complete their jobs they need those trucks on the road, and to do that we need technicians servicing those trucks. We partner with a lot of ...