Fuel Pressure Relief Valve / Race Plug

04.5 -'10 Trucks ONLY Solves most P1093 and P0087 codes. GM's fuel pressure relief valve is notorious for opening under hard load and dumping fuel rail pressure. Once this happens, it will continue to happen and engine output will deteriorate quickly. This is a solid plug that replaces the factory plug. 30-minute install, instructions, and replacement valve included.