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Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1809 (Hybrid/EV Control System) >> Repair Instructions >> Drive Motor Generator Control Module Assembly Replacement >> Installation Procedure
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Installation Procedure

WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Drive Motor Generator Control Module And Lifting Device
    GM1971288Courtesy of GENERAL MOTORS CORP.
  1. Attach a lifting device (2 and 3) to the drive motor generator control module assembly at the three identified locations.
  2. Lift the drive motor generator control module assembly into the vehicle.
    3. CAUTION:

    Refer to Fastener Caution .

  3. Remove the lifting device and install the ball studs (1). Tighten the ball studs to 10 N.m (89 lb in).
    4. Fig 2: Control Module Assembly Retainers And Mounting Nuts
    GM1971286Courtesy of GENERAL MOTORS CORP.
  4. Install the drive motor generator control module assembly retainers (4) and mounting nuts (3). Tighten the mounting nuts to 9 N.m (80 lb in).
  5. Install the accessory DC power control module ground strap (1) and accessory DC power control module ground strap nut (2). Tighten the nut to 9 N.m (80 lb in).
    6. Fig 3: Sight Shield Circuit Breaker And Fasteners
    GM1971283Courtesy of GENERAL MOTORS CORP.
  6. Install the sight shield circuit breaker (2) and secure with bolts (1). Tighten the bolts to 5 N.m (44 lb in).
    7. Fig 4: APM Assembly Connectors
    GM1971280Courtesy of GENERAL MOTORS CORP.
  7. Connect the accessory DC power control module assembly connectors (1 and 3) and install any removed locking tabs.
  8. Connect the accessory DC power control module assembly connector (2) using the following procedure:
    1. Push the lever up.
      2. NOTE:

      Install the connector (2) without disturbing the position of the lever. DO NOT use the lever to install the connector in place.

    2. Install the connector (2) onto the terminals by pushing on the connector only.
    3. Rotate the lever after the terminals are engaged.
    4. Push the green tab to lock the lever.
    9. Fig 5: Drive Motor Generator Position Sensor Shield Circuit Harness
    GM1971281Courtesy of GENERAL MOTORS CORP.
  9. Remove the caps (3, 6) from the drive motor generator power inverter coolant pipes.
  10. Connect the drive motor generator power inverter module cooling inlet and outlet hoses (4, 5).
  11. Install the shield circuit harness (1) and terminal fastener (2). Tighten the terminal fastener to 9 N.m (80 lb in).
    12. Fig 6: Power Inverter Control Module (PIM) 3-Phase Cable Terminal Fasteners
    GM1971277Courtesy of GENERAL MOTORS CORP.
  12. Install the power inverter module 3 phase cables (3, 5) into the power inverter module distribution box with new seals (6).
  13. Install the power inverter module 3 phase cable mounting fasteners (2, 4). Tighten the mounting fastener to 9 N.m (80 lb in).
    14. CAUTION:

    Always remove and install the High Voltage terminal fasteners with a magnet tipped socket. Never touch the exposed electronic circuit board surface or components. Dropped fasteners or physical contact may result in electronic circuit board damage.

  14. Install the power inverter module 3 phase cable terminal fasteners (1). Tighten the terminal fastener to 9 N.m (80 lb in).
    15. Fig 7: HV DC Battery Cable And Seal
    GM1971278Courtesy of GENERAL MOTORS CORP.
  15. Install the high voltage dc battery cable (6) with seal (7) into the power inverter module distribution box.
  16. Install the high voltage dc battery cable mounting fasteners (5). Tighten the mounting fastener to 9 N.m (80 lb in).
    17. CAUTION:

    Always remove and install the High Voltage terminal fasteners with a magnet tipped socket. Never touch the exposed electronic circuit board surface or components. Dropped fasteners or physical contact may result in electronic circuit board damage.

  17. Install the high voltage dc battery cable terminal fasteners (2). Tighten the terminal fastener to 9 N.m (80 lb in).
  18. Install the high voltage dc electric air conditioning compressor module cable (4) with seal (7) into the power inverter module distribution box.
  19. Install the high voltage dc electric air conditioning compressor module cable mounting fasteners (3). Tighten the mounting fasteners to 9 N.m (80 lb in).
    20. CAUTION:

    Always remove and install the High Voltage terminal fasteners with a magnet tipped socket. Never touch the exposed electronic circuit board surface or components. Dropped fasteners or physical contact may result in electronic circuit board damage.

  20. Install the high voltage dc electric air conditioning compressor module cable terminal fasteners (1). Tighten the terminal fastener to 9 N.m (80 lb in).
    21. Fig 8: PIM, Terminal Cover And Seal
    GM1971289Courtesy of GENERAL MOTORS CORP.
  21. Install a new seal (3) on the power inverter module distribution box.
    22. NOTE:

    DO NOT use excessively abrasive cleaning tools on the sealing surface. Hand sanding with wet 400 grit sandpaper or use of a hand scraper is recommended.

  22. Clean the sealing surface of the 3 phase cable cover as necessary.
  23. Position the 3 phase cable cover (2) onto the power inverter module distribution box ensuring the seal remains in place.
  24. Tighten the 3 phase cable cover fasteners (1) to 9 N.m (80 lb in).
    25. Fig 9: Drive Motor Generator Control Module Assembly Connector
    GM2008827Courtesy of GENERAL MOTORS CORP.
  25. Connect the drive motor generator control module assembly connector (1).
  26. Fill the power electronics cooling system and test for leaks at all serviced connections. Refer to Generator Control Module Cooling System Draining and Filling .
  27. Install the sight shield. Refer to Drive Motor Generator Control Module Sight Shield Replacement .
  28. Install the fender cross brace. Refer to Front Fender Rear Upper Bracket Replacement .
  29. Perform the High Voltage Enabling procedure. Refer to High Voltage Enabling .
  30. Install the air cleaner. Refer to Air Cleaner Assembly Replacement .
  31. For control module programming and setup procedures, refer to Control Module References .
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