Conditions for Clearing the DTC

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Conditions for the DTC are not currently present.
The module receives a clear code command from the scan tool.
The DTC clears after 100 malfunction free ignition cycles.
A current U1305 will clear when a valid Class 2 message is detected on the Class 2 serial data circuit or at the end of the current ignition cycle.