ECM Replacement
WARNING: This page is about a different car, the 2011 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
It is not necessary to program a new engine control module (ECM). The ECM is programmed from the factory. Ensure the new ECM is equipped with the latest software/calibration.
If the engine control module (ECM) is replaced, the following procedures must be performed:
- Idle learn procedure-Refer to the appropriate procedure:
- The crankshaft position (CKP) system variation learn procedure- Refer to the appropriate procedure:
- Theft Deterrent-Refer to Programming Theft Deterrent System Components . The ECM will learn the incoming fuel continue password immediately upon receipt of a password message. Once a password message is received, and a password is learned, a learn procedure must be performed to change this password again. An ECM which has been previously installed in another vehicle will have learned the other vehicle's fuel continue password, and will require a learn procedure after programming to learn the current vehicle's password.