Engine Control Module Replacement
WARNING: This page is about a different variant/trim than selected.
 Courtesy of GENERAL MOTORS COMPANY
|
| Callout |
Component Name |
|
Preliminary Procedures
- Disconnect the negative battery cable. Battery Negative Cable Disconnection and Connection (without KL9)Battery Negative Cable Disconnection and Connection (with KL9)
- Disconnect the charge air cooler outlet air hose from the throttle body.
- Charge Air Cooler Outlet Air Hose Bracket Nut@Engine Wiring Harness Bracket - Remove [2x] - Charge Air Cooler Outlet Air Hose Replacement
- Disconnect the electrical connectors from the engine control module.
|
| 1 |
Engine Control Module Bracket
Procedure
Unclip the engine control module bracket from the battery tray. |
| 2 |
Engine Control Module Retainer [2x] |
| 3 |
Engine Control Module
CAUTION:
- Turn the ignition OFF when installing or removing the control module connectors and disconnecting or reconnecting the power to the control module (battery cable, powertrain control module (PCM) /engine control module (ECM) /transaxle control module (TCM) pigtail, control module fuse, jumper cables, etc.) in order to prevent internal control module damage.
- Control module damage may result when the metal case contacts battery voltage. DO NOT contact the control module metal case with battery voltage when servicing a control module, using battery booster cables, or when charging the vehicle battery.
- In order to prevent any possible electrostatic discharge damage to the control module, do no touch the connector pins or the soldered components on the circuit board.
- Remove any debris from around the control module connector surfaces before servicing the control module. Inspect the control module connector gaskets when diagnosing or replacing the control module. Ensure that the gaskets are installed correctly. The gaskets prevent contaminant intrusion into the control module.
- The replacement control module must be programmed.
Procedure
Connect the battery negative cable. Battery Negative Cable Disconnection and Connection (without KL9)Battery Negative Cable Disconnection and Connection (with KL9)
NOTE:
Before removing the engine control module (ECM), use the scan tool to capture the ECM data. This captured data will then need to be restored into the NEW ECM. Control Module References
|