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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 682 (Battery, Charging System And Starting System - Introduction) >> Repair Instructions >> Starter/Generator Control Module (SGCM) Replacement (5.3L Engine w/RPO HP2) >> Removal Procedure
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Removal Procedure

WARNING: This page is about a different car, the 2006 GMC Sierra, 2006 GMC Cab & Chassis Sierra, 2006 Chevrolet Silverado, and 2006 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the energy storage box (ESB). Refer to Energy Storage Box (ESB) Service Disconnect/Connect (5.3L Engine w/RPO HP2) .
  2. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 4.8L, 5.3L, and 6.0L.
  3. Remove the surge tank. Refer to Surge Tank Replacement in Engine Cooling.
  4. Remove the starter/generator control module (SGCM) coolant tank. Refer to Coolant Tank - Starter/Generator Control Module Replacement in Engine Cooling.
  5. Remove the SGCM cover bolts, and cover.
    Fig 1: View Of SGCM, Cover & Bolts
    GM1237061Courtesy of GENERAL MOTORS CORP.
  6. Remove the 3-phase cable nuts to the SGCM.
  7. Remove the 3-phase cable from the SGCM.
  8. Remove the connector position assurance (CPA) retainer on the engine harness electrical connector.
    Fig 2: View Of CPA Retainer On Engine Harness Electrical Connector (5.3L Engine w/RPO HP2)
    GM1480429Courtesy of GENERAL MOTORS CORP.
  9. Disconnect the engine harness electrical connector.
  10. Disconnect the accessory power receptacle electrical connector from the SGCM.
    Fig 3: View Of SGCM Accessory Power Receptacle Electrical Connector (5.3L Engine w/RPO HP2)
    GM1257479Courtesy of GENERAL MOTORS CORP.
  11. Reposition the SGCM coolant outlet hose clamp (2).
    Fig 4: View Of SGCM Coolant Outlet Hose & Clamp (5.3L Engine w/RPO HP2)
    GM1480439Courtesy of GENERAL MOTORS CORP.
  12. Remove the SGCM coolant outlet hose (1).
  13. Loosen the 14-volt positive/negative battery cable bolt (1).
    Fig 5: View Of 14V Positive/Negative Battery Cable Bolt (5.3L Engine w/RPO HP2)
    GM1237045Courtesy of GENERAL MOTORS CORP.
  14. Remove the red connector position assurance (CPA) retainer.
  15. Disconnect the 14-volt positive/negative battery cable.
  16. Loosen the 42-volt positive/negative battery cable bolt (1).
  17. Remove the red CPA retainer.
  18. Disconnect the 42-volt positive/negative battery cable.
    Fig 6: View Of 42-Volt Positive/Negative Battery Cable & Jumper Ground Wire Connector (5.3L Engine w/RPO HP2)
    GM1237049Courtesy of GENERAL MOTORS CORP.
  19. Disconnect the 42-volt jumper ground wire connector (2).
  20. Remove the SGCM rear bolt (2).
    Fig 7: View Of SGCM, Brace & Bolts
    GM1237056Courtesy of GENERAL MOTORS CORP.
  21. Remove the SGCM front bolt (3).
  22. Remove the brace (4).
  23. Remove the SGCM.
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