Engine Control Module Replacement

WARNING: This page is about a different car, the 2009 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Engine Control Module

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
Preliminary Procedure Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection Remove the air cleaner assembly upper housing. Refer to Air Cleaner Element Replacement
1	Engine Control Module Tip: It is necessary to record the remaining engine oil life. If the replacement module is not programed with the remaining engine oil life, the engine oil life will default to 100 percent. If the replacement module is not programmed with the remaining engine oil life, the engine oil will need to be changed at 5 000 km (3,000 mi) from the last engine oil change. Procedure Disconnect the electrical connectors. Pull straight up to release the ECM from its retainers. Program the ECM, if replacing. Refer to Control Module References

Callout

Component Name

Preliminary Procedure

Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection
Remove the air cleaner assembly upper housing. Refer to Air Cleaner Element Replacement

Engine Control Module
Tip: It is necessary to record the remaining engine oil life. If the replacement module is not programed with the remaining engine oil life, the engine oil life will default to 100 percent. If the replacement module is not programmed with the remaining engine oil life, the engine oil will need to be changed at 5 000 km (3,000 mi) from the last engine oil change.

Procedure

Disconnect the electrical connectors.
Pull straight up to release the ECM from its retainers.
Program the ECM, if replacing. Refer to Control Module References