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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1961 (Hybrid Controls - 3.6L (Hp5) - Introduction) >> Repair Instructions >> Drive Motor Generator Power Inverter Module Removal and Installation >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Applying 30 psi Regulated Compressed Air To Coolant Inlet Pipe
    GM2175730Courtesy of GENERAL MOTORS CORP.
  1. Remove the drive motor generator control module from the vehicle. Refer to Drive Motor Generator Control Module Assembly Replacement .
  2. Remove the coolant pipe hoses (1), if installed.
    3. CAUTION: The module must be drained of all residual coolant prior to disassembly. Failure to properly drain all residual coolant may cause electronic circuit damage to occur during disassembly.
    NOTE: Place a container under the coolant outlet pipe to capture the escaping coolant.
  3. Drain the drive motor generator control module assembly of residual coolant by applying 30 psi regulated compressed air to the coolant inlet pipe until no coolant remains.
    4. Fig 2: PIM Cover, Seal & Bolts
    GM2175731Courtesy of GENERAL MOTORS CORP.
  4. Remove the drive motor generator power inverter control module (PIM) cover bolts (1).
  5. Remove the PIM cover (2). Discard the cover seal (3).
    6. Fig 3: Accessory DC Power Control Module (APM) Terminal Fasteners & Cooling Surge Tank Stud
    GM2175732Courtesy of GENERAL MOTORS CORP.
    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.
  6. Remove the HV dc accessory DC power control module (APM) terminal fasteners (1) utilizing a magnetic socket.
    7. NOTE: A service replacement PIM does not have the hybrid cooling surge tank stud installed. Remove and save the stud for installation onto the replacement PIM.
  7. Remove the hybrid cooling surge tank stud (2), if necessary.
    8. Fig 4: PIM Cover
    GM2175734Courtesy of GENERAL MOTORS CORP.
  8. Temporarily install the PIM cover (2) with 4 finger-tightened fasteners (1).
    9. Fig 5: Drive Motor Generator Control Module Assembly Components
    GM2175735Courtesy of GENERAL MOTORS CORP.
  9. Rotate the drive motor generator control module assembly onto the PIM cover.
  10. Remove the accessory DC power control module (APM) bolts (1).
  11. Remove the APM (2) and discard the coolant seal (3).
    12. NOTE: A service replacement PIM contains pre-installed coolant pipes. The following steps are necessary for coolant pipe seal replacement only.
  12. Remove the drive motor generator power inverter coolant pipes:
    1. Remove the drive motor generator power inverter coolant pipe bolts (4, 7).
    2. Remove the drive motor generator power inverter coolant pipes (5, 8).
    3. Remove and discard coolant seals (6, 9).
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