Low Oil Pressure
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
The instrument panel cluster (IPC) displays the low oil pressure indicator when the PCM/ECM detects a low engine oil pressure condition. The IPC receives a serial data message from the PCM/ECM requesting the display of the low oil pressure indicator.
The instrument panel cluster (IPC) displays the LOW OIL PRESSURE message in the DIC when the PCM/ECM detects a low engine oil pressure condition. The IPC receives a serial data message from the PCM/ECM requesting the display of the LOW OIL PRESSURE message in the DIC (if equipped with uplevel IPC UH8).