GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1826449  Size: SH
  1. Remove the air inlet grille panel. Refer to Air Inlet Grille Panel Replacement.
  2. Remove the air inlet screen support nuts and support.

  3. Object Number: 1826282  Size: SH
  4. Relieve the high side fuel system pressure. Refer to Fuel Pressure Relief.
  5. Disconnect the engine wiring harness electrical connector (1) from the high pressure fuel pump.
  6. Remove the engine wiring harness clip (3) from the high pressure fuel pump cover.

  7. Object Number: 1826280  Size: SH
  8. Remove the high pressure fuel pump cover bolts.
  9. Remove the high pressure fuel pump cover.

  10. Object Number: 1829002  Size: SH
  11. Remove the high pressure fuel pump insulator.

  12. Object Number: 1828941  Size: SH
  13. Loosen the high pressure fuel pipe fitting at the fuel pump.
  14. Loosen the high pressure fuel pipe fitting at the fuel rail.
  15. Remove and discard the high pressure fuel pipe.

Installation Procedure


    Object Number: 1828941  Size: SH
  1. Ensure that the high pressure fuel pump, and fuel rail fittings are clean prior to assembly.
  2. Install the NEW high pressure fuel pipe.
  3. Tighten the NEW high pressure fuel pipe fitting to the fuel rail hand tight.
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Tighten the NEW high pressure fuel pipe fitting to the high pressure fuel pump hand tight to 32 N·m (24 lb ft).

  6. Object Number: 1829002  Size: SH
  7. Install the high pressure fuel pump insulator.

  8. Object Number: 1826280  Size: SH
  9. Position the high pressure fuel pump cover.
  10. Install the high pressure fuel pump cover bolts and tighten to 10 N·m (89 lb in).

  11. Object Number: 1826282  Size: SH
  12. Connect the engine wiring harness electrical connector (1) to the high pressure fuel pump.
  13. Install the engine wiring harness clip (3) to the high pressure fuel pump cover.
  14. Inspect for leaks using the following procedure:
  15. 10.1. Turn ON the ignition, with the engine OFF for 2 seconds.
    10.2. Turn OFF the ignition, for 10 seconds.
    10.3. Turn ON the ignition, with the engine OFF.
    10.4. Inspect for fuel leaks.
  16. Install the low side fuel pressure service port cap.
  17. Tighten the fuel fill cap.

  18. Object Number: 1826449  Size: SH
  19. Install the air inlet screen support and nuts and tighten to 10 N·m (89 lb in).
  20. Install the air inlet grille panel. Refer to Air Inlet Grille Panel Replacement.