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Home >> GMC >> 2024 >> Acadia AT4 >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Secondary And Configurable Customer Controls >> Diagnostic Information and Procedures >> Drive Mode Switch Malfunction >> Circuit/System Description

Circuit/System Description

When the S36 Dimmer Switch is pressed, the signal circuit becomes grounded through the appropriate resistor internal to the dimmer switch and voltage from the BCM will decrease accordingly. The BCM interprets the signal and responds by sending a serial data message to the P16 Instrument Panel Cluster Control Module.