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Removal (8.1L)

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  1. Disconnect negative battery cable. Loosen retaining bolt on intake manifold sight shield at top of engine. Remove intake manifold sight shield from top of engine.
  2. Release fuel pressure. See FUEL SYSTEM PRESSURE RELEASE . Before removal, clean area surrounding fuel pressure regulator with a spray type engine cleaner, such as GM X-30A. DO NOT use any solvent that contains Methyl Ethyl Ketone (MEK). Solvents containing MEK may damage fuel system components.
  3. Disconnect the fuel pressure regulator vacuum line. Remove the fuel pressure regulator retainer. See Figure. Remove the fuel pressure regulator. Ensure small "O" ring, fuel pressure regulator filter, large "O" ring and back-up ring are not still in the fuel rail.
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