GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • J 34730-1A Fuel Pressure Gage
    • J 42982 Fuel Pressure Gage Adapter
    • J 43178 Fuel Line Disconnect Tool

Installation Procedure

  1. Relieve the fuel pressure. Refer to Fuel Pressure Relief.
  2. Remove the engine cover.
  3. Remove the quick connect coupling cover of the fuel feed hose.

  4. Object Number: 236747  Size: SH
  5. Using the J 43178 , disconnect the quick connect coupling of the fuel feed hose from the fuel feed pipe of the fuel rail. Use a shop towel in order to catch any remaining fuel that may leak. Refer to Metal Collar Quick Connect Fitting Service.
  6. Install the J 42982 between the fuel feed pipe of the fuel rail and of the fuel feed hose.

  7. Object Number: 320792  Size: SH
  8. Install the J 34730-1A to the J 42982 , and tighten securely.
  9. Caution: Refer to Fastener Caution in the Preface section.

  10. Connect the negative battery cable. Tighten the retainer for the negative battery cable terminal to 15 N·m (11 lb ft).
  11. Turn ON the ignition in order to pressurize the fuel system.
  12. Turn OFF the ignition.
  13. Check for any fuel leaks.

Removal Procedure

  1. Relieve the fuel pressure. Refer to the Fuel Pressure Relief.

  2. Object Number: 320792  Size: SH
  3. Remove the J 34730-1A from the J 42982 .
  4. Using the J 43178 , disconnect the quick connect coupling of the J 42982 from the fuel feed pipe of the fuel rail. Use a shop towel in order to catch any remaining fuel that may leak.
  5. Disconnect the quick connect coupling of the fuel feed hose from the J 42982 , and remove the adapter. Use a shop towel in order to catch any remaining fuel that may leak.

  6. Object Number: 624247  Size: SH
  7. Connect the quick-connect fitting of the fuel feed hose (1) to the fuel feed pipe (2) of the fuel rail. Refer to Metal Collar Quick Connect Fitting Service.
  8. Install the cover for the quick connect coupling of the fuel feed hose.
  9. Caution: Refer to Fastener Caution in the Preface section.

  10. Connect the negative battery cable. Tighten the retainer for the negative battery cable terminal to 15 N·m (11 lb ft).
  11. Turn ON the ignition in order to pressurize the fuel system.
  12. Turn OFF the ignition.
  13. Check for any fuel leaks.
  14. Install the engine cover.