GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 GMC C Sierra - 2WD 🢒 Engine 🢒 Engine Mechanical - 6.6L 🢒 Engine Wiring Harness Assembly Removal

    Object Number: 1335443 Size: SH
  1. Remove the left glow plug harness bracket bolts.

    2. Object Number: 1335450 Size: SH
  2. Remove the right glow plug harness bracket bolts.

    3. Object Number: 1335454 Size: SH
  3. Disconnect the positive crankcase ventilation (PCV) hose clamp.

    4. Object Number: 1335456 Size: SH
  4. Remove the right PCV pipe bolt.

    5. Object Number: 1335460 Size: SH
  5. Remove the left PCV pipe bolt.

    6. Object Number: 1335462 Size: SH
  6. Remove the PCV pipe.

    7. Object Number: 1662870 Size: SH
  7. Disconnect the exhaust gas recirculation (EGR) valve electrical connector.

    8. Object Number: 1662872 Size: SH
  8. Remove the ground bolt.

    9. Object Number: 1335470 Size: SH
  9. Disconnect the crankshaft postion sensor electrical connector.

    10. Object Number: 1335482 Size: SH
  10. Disconnect the fuel pressure control valve electrical connector.

    11. Object Number: 1335526 Size: SH
  11. Disconnect the oil level sensor electrical harness connector.

    12. Object Number: 1335528 Size: SH
  12. Disconnect the fuel temperature sensor connector.

    13. Object Number: 1662873 Size: SH
  13. Disconnect the glow plug controller electrical connector.

    14. Object Number: 1335534 Size: SH
  14. Disconnect and remove the turbocharger vane positon sensor.

    15. Object Number: 1335536 Size: SH

    Notice: Label all the injector electrical connectors before the connectors are removed in order to prevent reconnecting to the wrong injector. Failure to properly connect the injectors in the correct sequence will cause severe engine damage.

  15. Disconnect the fuel injector electrical connections.

    16. Object Number: 1335540 Size: SH
  16. Disconnect the turbocharger vane control solenoid valve.

    17. Object Number: 1335543 Size: SH
  17. Disconnect the fuel rail pressure sensor.

    18. Object Number: 1335546 Size: SH
  18. Disconnect the oil pressure sensor electrical connector.

    19. Object Number: 1335549 Size: SH
  19. Remove the oil level sensor harness bolt.

    20. Object Number: 1650645 Size: SH
  20. Remove the glow plug controller bolts.
  21. Remove the glow plug controller.
  22. Remove the glow plug controller shield bolts.
  23. Remove the glow plug controller shield.

    24. Object Number: 1650648 Size: SH
  24. Remove the glow plug controller bracket bolts.

    25. Object Number: 1650651 Size: SH
  25. Remove the glow plug controller bracket.

    26. Object Number: 1335554 Size: SH
  26. Remove the left glow plugs.

    27. Object Number: 1335557 Size: SH
  27. Remove the right glow plugs.

    28. Object Number: 1335560 Size: SH
  28. Remove the engine wiring harness.

    29. Object Number: 1662875 Size: SH
  29. Remove the engine harness bracket bolts.
  30. Remove the engine harness bracket.