Conditions for Clearing the DTC

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

The battery positive voltage level is less than 17.9 volts for approximately 1/2 seconds.
A history DTC clears after 100 malfunction free ignition cycles.
The BCM receives the clear code command from the scan tool.