Installation Procedure

Courtesy of GENERAL MOTORS COMPANY

Battery Energy Control Module (2) - Install
Fig 1: Identifying Battery Energy Control Module Connectors With Reconnect Sequence (1 Of 2)
Courtesy of GENERAL MOTORS COMPANY
CAUTION:
The battery energy control modules internal cell balancing circuitry is powered by the cell group voltage sense circuits. In order to prevent an unrecoverable, unbalanced Hybrid/EV battery section or internal control module damage, always take the following actions:
1. Disconnect ALL of the battery energy control module connectors prior to disconnecting any Hybrid/EV battery section connector.
2. Reconnect all the Hybrid/EV battery section connectors prior to reconnecting the battery energy control module connectors.
3. Disconnect and reconnect the battery energy control module connectors ONLY in the sequence provided in Repair Instructions.
Connect the battery energy control module connectors in the sequence shown above.
Fig 2: Identifying Battery Energy Control Module Connectors With Reconnect Sequence (2 Of 2)
Courtesy of GENERAL MOTORS COMPANY

Connect the battery energy control module connectors in the sequence shown above.
High Voltage Battery Cover Replacement - Install
Drive Motor Battery Replacement and Shipping Preparation - Install

NOTE:

Service replacement module requires programming.