Conditions for Clearing the DTC

WARNING: This page is about a different car, the 2002 Oldsmobile Intrigue. However, it is still accessible from the selected car via links, so may be relevant.

A short to battery in the park lamp relay control circuit is no longer detected by the BCM when the park lamp relay is commanded to energize. After the fault is removed the ignition must be cycled to clear the code
A history DTC B2588 will clear after 100 consecutive ignition cycles if the condition for the condition is no longer present.
The BCM receives the clear code command from the scan tool.