Envoy 4WD V8-5.3L VIN P (2004)
12. Remove the positive crankcase ventilation (PCV) hose (with valve).
13. Remove the upper engine wire harness retainer nut (1).
14. Reposition the upper engine wire harness aside.
15. Disconnect the fuel feed and return pipes (1) from the fuel rail.
16. Disconnect the fuel pressure regulator vacuum line.