The fuel pressure for a 1993 Chevy truck varies depending on the engine. There's no single answer. You need to specify the engine size (e.g., 4.3L, 5.0L, 5.7L, 6.5L diesel) to get an accurate answer.
To find the correct fuel pressure specification, consult your owner's manual or a reliable repair manual specific to your truck's engine. These resources will provide the correct fuel pressure range for your vehicle.
