Shop 2004 chevrolet silverado 1500 wiring harness. 2004 chevrolet silverado 1500 all submodels all engines. I have a 2004 silverado 1500 z71 with factory install tow package that has a 7 pin trailer connector already installed. 2004 chevy silverado trailer wiring harness. The hopkins hm40975 should be a direct replacement but just to be. 1993Read More