Hazard Lamp Indicators Malfunction

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON, with a scan tool perform the Display Test for the instrument panel cluster (IPC) and observe both turn signal indicators.

If both turn signal indicators illuminate during the test, replace the BCM.
If both turn signal indicators do not illuminate during the test or remain illuminated at all times, replace the IPC.