Hill Descent Control Indicator

WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.

The instrument cluster turns the hill descent control indicator ON when the following occurs:

The instrument cluster performs the bulb check.
The driver manually enables or disables the hill descent control by pressing the hill descent control switch. The electronic brake control module sends a serial data message to the instrument cluster requesting illumination.