ECM Replacement and Reprogramming

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.

If the engine control module (ECM) is replaced or reprogrammed, the following procedures must be performed:

ECM reprogramming-Refer to Service Programming System (SPS) .
Clutch pedal position sensor learn-Refer to Clutch Pedal Position Sensor Learn .
Heated oxygen (HO2S) sensor heater learn procedure using a scan tool.
Idle learn procedure-Refer to Throttle/Idle Learn .
The crankshaft position (CKP) system variation learn procedure-Refer to Crankshaft Position System Variation Learn .
Engine Oil Life Remaining-When available, use a scan tool to reset the Engine Oil Life Remaining back to the original percentage recorded before the module was reprogrammed.
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.