Installation Procedure

Fig 1: Battery Energy Control Module And Retaining Tabs

Courtesy of GENERAL MOTORS COMPANY

Install Battery Energy Control Module (2)

Fig 2: Battery Energy Control Module Connector Reconnection 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:

Disconnect ALL of the battery energy control module connectors prior to disconnecting any Hybrid/EV battery section connector.
Reconnect all the Hybrid/EV battery section connectors prior to reconnecting the battery energy control module connectors.
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 3: Battery Energy Control Module Connector Reconnection Sequence (2 Of 2)

Courtesy of GENERAL MOTORS COMPANY

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

NOTE:

Service replacement module requires programming.

Program the battery energy control module. Refer to Control Module References