GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2005 🢒 TopKick C-Series (Conventional) C6/C7/C8 🢒 Engine 🢒 Engine Controls - 8.1L 🢒 Fuel Pressure Service Valve Replacement

Removal Procedure
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .

    2. Object Number: 705539 Size: SH
  2. Clean the area around the fuel pressure connection with GM X-30A or equivalent.
  3. Remove the fuel pressure connection core (2) using a standard valve core removal and installation tool.

Installation Procedure

    Object Number: 705539 Size: SH
  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.
  4. Inspect for leaks.
    5. 4.1. Turn ON the ignition for 2 seconds.
    4.2. Turn OFF the ignition for 10 seconds.
    4.3. Turn ON the ignition.
    4.4. Inspect for fuel leaks.
  5. Install the fuel pressure connection valve cap (1).