Action Taken When the DTC Sets

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

If the BCM loses communication with the rain sensor while operating with single wipes, the windshield wiper operation will default to intermittent operation with a fixed dwell time of 4 seconds.
If the BCM loses communication with the rain sensor while operating at low speed, the windshield wiper operation will default to low speed.
If the BCM loses communication with the rain sensor while operating at high speed, the windshield wiper operation will default to high speed.