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Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 407 (Engine Cooling System) >> Repair Instructions >> Coolant Tank - Starter/Generator Control Module Replacement >> Removal Procedure
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Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the starter/generator control module (SGCM) cooling system. Refer to Draining and Filling Cooling System - Starter/Generator Control Module .
  2. Raise the hood to the service position, and perform the following steps:
    1. Remove the ground strap from the hood.
    2. Remove the hood hinge bolts (1).
    3. Raise the hood until vertical.
    4. Install the hood hinge bolts until snug in the service position (2).
    3. Fig 1: Identifying Hood Hinge Normal And Service Position Bolt Holes
    GM310799Courtesy of GENERAL MOTORS CORP.
  3. Reposition the SGCM coolant tank hose clamp (2) from the SGCM coolant tank (3).
  4. Remove the SGCM coolant tank hose (1) from the SGCM coolant tank (3).
    5. Fig 2: View Of SGCM, Coolant Tank, Hose & Clamp
    GM1206680Courtesy of GENERAL MOTORS CORP.
  5. Reposition the SGCM pressure relief hose clamp from the SGCM pressure relief valve.
  6. Remove the SGCM pressure relief hose from the SGCM pressure relief valve.
    7. Fig 3: View Of SGCM Pressure Relief Valve & Hose
    GM1237052Courtesy of GENERAL MOTORS CORP.
  7. Remove the surge tank mounting bolts. Position the surge tank away from the SGCM module.
  8. Remove the bolts (1) from the brace.
    9. Fig 4: View Of SGCM, Brace & Bolts
    GM1237056Courtesy of GENERAL MOTORS CORP.
  9. Reposition the SGCM coolant pump inlet hose clamp (1) from the SGCM coolant tank (2).
  10. Remove the SGCM coolant pump inlet hose (3) from the SGCM coolant tank (2).
    11. Fig 5: View Of SGCM Coolant Inlet Hose, Coolant Tank & Inlet Hose Clamp
    GM1206674Courtesy of GENERAL MOTORS CORP.
  11. Remove the bolts from the SGCM coolant tank.
  12. Reposition the SGCM coolant tank in order to access the SGCM rear bolt.
  13. Remove the rear bolt (2) from the SGCM.
  14. Remove the front bolt (3) from the SGCM.
    15. Fig 6: View Of SGCM, Brace & Bolts
    GM1237056Courtesy of GENERAL MOTORS CORP.
  15. Reposition the SGCM in order to remove the SGCM coolant tank.
  16. Remove the SGCM coolant tank (2) from the vehicle.
    17. Fig 7: View Of SGCM Coolant Inlet Hose, Coolant Tank & Inlet Hose Clamp
    GM1206674Courtesy of GENERAL MOTORS CORP.
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