Air Bag Readiness Light On, DTC B1019 Set in Sensing and Diagnostic Module (SDM) (Reprogram Instrument Panel Cluster (IPC))

This bulletin is being revised to add the Buick Lucerne to the models. Please discard Corporate Bulletin Number 07-09-41-008 (Section 09 -- Restraints).

Some customers may comment on the air bag readiness light being illuminated.

A scan tool may reveal DTC B1019 with a symptom code of 3A set as history in the SDM.

Important: If the code is set as current, use the appropriate SI instructions for this DTC to troubleshoot this concern.

The instrument panel cluster (IPC) has failed to detect the passenger airbag ON/OFF indicator due to a software timing concern and has transmitted this information to the SDM. The IPC can fail to detect this ON/OFF indicator if there is an unbuckled passenger and the vehicle is running because the IPC is checking the status of the indicator at the incorrect timing interval. This DTC can also set more frequently in low voltage operation.

A revised IPC calibration has been developed to address this issue. Reprogram the IPC with updated calibration files using the TIS2WEB Service Programming System (SPS) application. As always, make sure your Tech 2® is updated with the latest software version.