GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 2033586  Size: SH
  1. Relieve the high side fuel system pressure. Refer to Fuel Pressure Relief.
  2. Remove the charged air cooler inlet pipe. Refer to Charge Air Cooler Inlet Pipe Replacement.
  3. Remove and reposition the evaporative emission retaining clip (1) from the high pressure fuel pump cover.
  4. Disconnect the high pressure fuel pump electrical connector (2).
  5. Remove the engine wiring harness clip (3) from the high pressure fuel pump cover and reposition the engine wire harness out of the way.

  6. Object Number: 2033594  Size: SH
  7. Remove the high pressure fuel pump cover bolts (1) and cover (2).

  8. Object Number: 2033606  Size: SH
  9. Remove the high pressure fuel pump insulator (1).

  10. Object Number: 2033614  Size: SH
  11. Loosen the fuel feed intermediate pipe fittings at the fuel pump (1) and the fuel rail (2).
  12. Remove and discard the fuel feed intermediate pipe.

Installation Procedure


    Object Number: 2033614  Size: SH
  1. Ensure that the high pressure fuel pump, and fuel rail fittings are clean prior to assembly.
  2. Install the NEW fuel feed intermediate pipe and start the fittings hand tight.
  3. Caution: Refer to Fastener Caution in the Preface section.

  4. Tighten the fuel feed intermediate pipe fittings at the fuel pump (1) and the fuel rail (2).
  5. Tighten
    Tighten the fittings to 32 N·m (24 lb ft).


    Object Number: 2033606  Size: SH
  6. Install the high pressure fuel pump insulator (1).

  7. Object Number: 2033594  Size: SH
  8. Install the high pressure fuel pump cover bolts (1) and cover (2).
  9. Tighten
    Tighten the cover bolts to 10 N·m (89 lb in).


    Object Number: 2033586  Size: SH
  10. Install the evaporative emission retaining clip (1) to the high pressure fuel pump cover.
  11. Install the engine wiring harness clip (3) to the high pressure fuel pump cover.
  12. Connect the high pressure fuel pump electrical connector (2).
  13. Install the engine wiring harness clip (3) to the high pressure fuel pump cover and reposition the engine wire harness.
  14. Install the charged air cooler inlet pipe. Refer to Charge Air Cooler Inlet Pipe Replacement.
  15. Inspect for leaks using the following procedure:
  16. 11.1. Turn ON the ignition, with the engine OFF for 2 seconds.
    11.2. Turn OFF the ignition, for 10 seconds.
    11.3. Turn ON the ignition, with the engine OFF.
    11.4. Inspect for fuel leaks.
  17. Install the low side fuel pressure service port cap.
  18. Tighten the fuel fill cap.