Conditions for Clearing the DTC

WARNING: This page is about a different car, the 2002 GMC Safari and 2002 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

The DTC becomes history when the fault is no longer present.
A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.
The BCM receives the clear code command from the scan tool.

Fig 1: DTC B2961 Diagnostic Chart

Courtesy of GENERAL MOTORS CORP.