How do i install a fuel injector on a 1996 chevrolet silverado 1500 5.7 liter?

It depend if it is port injection or injected in to air horn at the throttle body. It is easy if it in the air stream. Undo the and remove the retain screw or bolt.. Some take a special tool to release the fuel. How ever on all you need to bleed the pressure of the fuel line. It is done where check fuel pressure. Port injection you will have one injector per cylinder. Here you need to replace seals or they lead on to the intake and cause the fuel not to get packet into the cylinder. There are special tools to do this job. It is best done it the shop that has the equipment and can check and adjust the fuel pressure regulator or replace if can no be repaired. A lot of time regulator is letting to much pressure by or to little. It is a lot cheaper than the injector or injectors. You get what you pay for her. Some time a clean can be done in the shop that you cannot do at home, while the injector are in the vehicle. It a lot better than the kink you put in the gas tank. That is basic to keep them clean and lubed. Gas dry them out and the stick closed or open.