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Home >> GMC >> 2007 >> Sierra Classic 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Hybrid Control System) >> Repair Instructions >> Generator Control Module Replacement (5.3L Engine w/RPO HP2) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of SGCM, Brace & Bolts
    GM1237056Courtesy of GENERAL MOTORS CORP.
  1. Install the GCM.
  2. Install the brace (4).
  3. Install the GCM front bolt (3).
    4. NOTE: Refer to Fastener Notice .
  4. Install the GCM rear bolt (2).

    Tighten:  Tighten the bolts to 20 N.m (15 lb ft).

    5. Fig 2: View Of 42-Volt Positive/Negative Battery Cable Bolt & Jumper Ground Wire Connector (5.3L Engine w/RPO HP2)
    GM1237049Courtesy of GENERAL MOTORS CORP.
  5. Connect the 42-volt jumper ground wire connector (2).
  6. Connect the 42-volt positive/negative battery cable.
  7. Install the red CPA retainer.
  8. Tighten the 42-volt positive/negative battery cable bolt (1).

    Tighten:  Tighten the bolt to 9 N.m (80 lb in).

    9. Fig 3: View Of 14V Positive/Negative Battery Cable Bolt (5.3L Engine w/RPO HP2)
    GM1237045Courtesy of GENERAL MOTORS CORP.
  9. Connect the 14-volt positive/negative battery cable.
  10. Install the red CPA retainer.
  11. Tighten the 14-volt positive/negative battery cable bolt (1).

    Tighten:  Tighten the bolt to 9 N.m (80 lb in).

    12. Fig 4: View Of SGCM Coolant Outlet Hose & Clamp (5.3L Engine w/RPO HP2)
    GM1480439Courtesy of GENERAL MOTORS CORP.
  12. Install the GCM coolant outlet hose (1).
  13. Position the GCM coolant outlet hose clamp (2).
    14. Fig 5: View Of SGCM Accessory Power Receptacle Electrical Connector (5.3L Engine w/RPO HP2)
    GM1257479Courtesy of GENERAL MOTORS CORP.
  14. Connect the accessory power receptacle electrical connector to the GCM.
    15. Fig 6: View Of CPA Retainer On Engine Harness Electrical Connector (5.3L Engine w/RPO HP2)
    GM1480429Courtesy of GENERAL MOTORS CORP.
  15. Connect the engine harness electrical connector.
  16. Install the CPA retainer on the engine harness electrical connector.
    17. Fig 7: View Of SGCM, Cover & Bolts
    GM1237061Courtesy of GENERAL MOTORS CORP.
  17. Install the 3-phase cable to the GCM.
  18. Install the 3-phase cable nuts to the GCM.

    Tighten:  Tighten the nuts to 15 N.m (11 lb ft).

  19. Install the GCM cover and bolts.

    Tighten:  Tighten the bolts to 9 N.m (80 lb in).

  20. Install the GCM coolant tank. Refer to Generator Control Module Coolant Tank Replacement .
  21. Install the surge tank. Refer to Surge Tank Replacement .
  22. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  23. Connect the battery service disconnect/connect. Refer to Hybrid Battery Service Disconnect/Connect (5.3L Engine w/RPO HP2) .
  24. Program the GCM. Refer to Control Module References for programming and setup information.
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