Fuel Pressure Test Port: Service and Repair

Fuel Pressure Test Connector:

REMOVAL
1. Disconnect the negative battery terminal.
2. Clean Area around the fuel pressure connection with GM X-30A or equivalent cleaner.
3. Relieve the fuel system pressure. Refer to Fuel Delivery and Air Induction / Service and Repair.
4. Remove the fuel pressure connection and seal.
5. Discard the seals.

INSTALLATION
1. Install the new seal on fuel pressure connection.
2. Install the fuel pressure connection assembly in the fuel rail and torque to
10.0 Nm (88 lb in.)
3. Tighten the fuel filler cap.
4. Connect the negative battery terminal.

INSPECTION
^ Turn the ignition switch to the "ON" position for two seconds.
^ Then turn to the "OFF" position for ten seconds.
^ Again turn to the "ON" position and check for fuel leaks.

NOTE: The Electronic Control Module (ECM) will need to relearn the Idle Air Control (IAC) valve pintle position following battery reconnection. This procedure allows the ECM memory to be updated and provides for a stable idle speed.

Idle Learn Procedure
1. Install the Tech 1 "SCAN" tool.
2. Ignition "ON" engine "OFF".
3. Select the "IAC SYSTEM", then "IDLE LEARN" in the "MISC. TEST" mode.
4. Proceed with the idle learn as directed by the Tech 1 "SCAN" tool.