Removal Procedure
WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the drive motor generator control module from the vehicle. Refer to Drive Motor Generator Control Module Assembly Replacement .
- Remove the APM ground strap bolt (1) and ground strap (2).
- Remove the temporary coolant pipe caps (1).
- 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.
- Remove the drive motor generator power inverter control module (PIM) cover fasteners (1).
- Remove the PIM cover (2). Discard the cover seal (3).
- Remove the HV dc accessory DC power control module (APM) terminal fasteners (1) utilizing a magnetic socket.
- Temporarily install the PIM cover (2) with 4 finger-tightened fasteners (1).
- Rotate the drive motor generator control module assembly onto the PIM cover.
- Remove the APM to PIM mounting fasteners (1).
- Remove the APM (2) and discard the coolant seal (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.
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.