With 4L80-E Transmission

Data Link Connector(DLC):

CAUTION: To prevent control module damage, the key must be "OFF" when disconnecting or reconnecting control module power.

To clear the Diagnostic Trouble Code (DTC)(s) from the memory of the control module, either to determine if the malfunction will occur again or because repair has been completed. The following must be performed when all repairs have been completed. This will allow all DTCs to be cleared.

1. Ignition "OFF."
2. Ground diagnostic terminal "A" to "B" of Data Link Connector (DLC).
3. Ignition "ON."
4. Fully apply brake pedal.
5. Fully apply accelerator pedal.
6. Check Malfunction Indicator Lamp (MIL) (Service Engine Soon) for DTC 12.
7. Release brake pedal.
8. Release accelerator pedal.
9. Check MIL (Service Engine Soon) for DTC 12.
10. Remove jumper from DLC connector.
11. Turn ignition "OFF."