Engine Control Module Replacement

Fig 1: Engine Control Module

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Electronic Control Module WARNING: Refer to Safety Glasses Warning . CAUTION: Always turn the ignition off when installing or removing the ECM connectors in order to prevent damage to the components. Procedure Record the current Engine Oil Life percentage, Transmission Oil Life, and use a scan tool to update the NEW ECM, if replacing. Disconnect the electrical connectors. Release the retaining tabs. If replacing, program the ECM. Refer to Control Module References .

Callout

Component Name

Preliminary Procedure:
Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .

Electronic Control Module

WARNING: Refer to Safety Glasses Warning .

CAUTION: Always turn the ignition off when installing or removing the ECM connectors in order to prevent damage to the components.

Procedure

Record the current Engine Oil Life percentage, Transmission Oil Life, and use a scan tool to update the NEW ECM, if replacing.
Disconnect the electrical connectors.
Release the retaining tabs.
If replacing, program the ECM. Refer to Control Module References .