Installation Procedure

Tools Required

• J 34730-1A  Fuel Pressure Gauge. See Special Tools and Equipment .
• J 41041  Fuel Pressure Gauge Adapter. See Special Tools and Equipment .

1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure .
CAUTION: Refer toBattery Disconnect Caution in Cautions and Notices.
2. Disconnect the negative battery cable.
3. Remove the fuel plug bolt (1) from the end of the fuel rail.
Fig 1: View Of Fuel Plug Bolt
Courtesy of GENERAL MOTORS CORP.
4. Install the J 41041  to fuel rail. See Special Tools and Equipment .
5. Install the J 34730-1A  to the J 41041  . See Special Tools and Equipment .
NOTE: Refer to Fastener Notice in Cautions and Notices.
6. Connect the negative battery cable.
7. Turn ON the ignition in order to pressurize the fuel system.
8. Turn OFF the ignition.
9. Check for any fuel leaks and repair as necessary.
10. Start the engine.
11. Idle the engine at the normal operating temperature.
12. Verify the fuel pressure as follows:
    • 210-260 kPa (30-37 psi) with the engine idling.
    • 250-300 kPa (36-43 psi) when the engine is not running, the ignition switch is On, and the fuel pump running.
    • The fuel pressure should hold at or more than 180 kPa (26 psi) within 1 minute of the engine not running while the ignition switch is Off and the fuel pump is not running.
13. If the fuel pressure is not within the specifications, refer to Fuel System Diagnosis .
Fig 2: View Of J 41041 & J34730-1A
Courtesy of GENERAL MOTORS CORP.