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Home >> GMC >> 2001 >> C3500 HD 8.1 G, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 8.1L - Repair Instructions >> Repair Instructions >> Fuel Pressure Service Valve Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: View Of Fuel Rail & Related Components
    GM705539Courtesy of GENERAL MOTORS COMPANY
  1. Install the fuel pressure connection core assembly (2) using a standard valve core removal and installation tool.
  2. Tighten the fuel filler cap.
  3. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (Auxiliary Battery) , Battery Negative Cable Disconnection and Connection (Single Battery) in Engine Electrical.
  4. Inspect for leaks using the following procedure:
    1. Turn ON the ignition, with the engine OFF for 2 seconds.
    2. Turn OFF the ignition for 10 seconds.
    3. Turn ON the ignition, with the engine OFF.
    4. Inspect for fuel leaks.
  5. Install the fuel pressure connection valve cap (1).
    6. Fig 2: Intake Manifold Sight Shield, Bolts & Retainer
    GM665445Courtesy of GENERAL MOTORS COMPANY
  6. Install the fuel injector sight shield.
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