With PCM/VCM

WITH 4L60-E AUTOMATIC TRANSMISSION

CLEARING CODES
To clear any Diagnostic Trouble Code (DTC) from the memory, either to determine if the malfunction will occur again or because repair has been completed, power feed must be disconnected for at least thirty (30) seconds or Tech 1 clear DTC(s) option is used. when Tech 1 is used other memory items will not be lost and have to be reset.