GM Service Manual Online
For 1990-2009 cars only

A DTC may be cleared from the memory of the IPC by performing one of the following procedures:

    • Disconnect the battery.
    • Disconnect the IPC electrical connector.
    • Use the scan tool.
    • Create 100 consecutive ignition cycles without the fault reoccurring.

Clearing DTC(s) from the IPC memory is necessary after a repair or to test if a malfunction will occur again. If the fault still exists the DTC will re-set after clearing the DTC(s).