Conditions for Clearing the MIL/DTC

WARNING: This page is about a different car, the 2003 Saturn LW300, 2003 Saturn LW200, 2003 Saturn L300, and 2003 Saturn L200. However, it is still accessible from the selected car via links, so may be relevant.

The ECM turns OFF the MIL after the third consecutive drive trip in which the TCM does not send a MIL illumination request.
A scan tool can clear the MIL/DTC.
The TCM clears the DTC from TCM history if the vehicle completes 40 warm-up cycles without an emission related diagnostic fault occurring.
The TCM cancels the default actions when the ignition switch is OFF long enough in order to power down the TCM.

DTC P0601 (3.0L (L81))

Step	Action	Values	Yes	No
1	Did you perform the Diagnostic System Check - Engine Controls?	-	Go to Step 2	Go to DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS in Self-Diagnostics - 3.0L or DIAGNOSTIC SYSTEM CHECK -- ENGINE CONTROLS in Self-Diagnostics - 2.2L
2	Install a scan tool. Turn ON the ignition with the engine OFF. IMPORTANT: Before clearing the DTC, use the scan tool in order to record the Freeze Frame and Failure Records. Using the Clear Info function erases the Freeze Frame and Failure Records from both the ECM and the TCM. Record the DTC Freeze Frame and Failure Records. Record the Failure Records. Clear the DTC. Turn OFF the ignition for at least 30 seconds. Turn ON the ignition. Did DTC P0601 reset?	-	Go to Step 3	-
3	Replace the TCM. Refer to Transmission Control Module (TCM) Replacement Is the replacement complete?	-	Go to Step 4	-
4	Perform the following procedure in order to verify the repair: Select DTC. Select Clear Info. Turn OFF the ignition for at least 30 seconds. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Select Specific DTC. Enter DTC P0601. Has the test run and passed?	-	Go to Step 5	Go to Step 2
5	With the scan tool, observe the stored information, capture info and DTC info. Does the scan tool display any DTCs that you have not diagnosed?	-	Go to DIAGNOSTIC TESTS in Self-Diagnostics - 2.2L or DIAGNOSTIC TESTS in Self-Diagnostics - 3.0L	System OK