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Home >> GMC >> 2021 >> Acadia SL >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Displays And Gauges >> Diagnostic Information and Procedures >> DTC B12AC >> Circuit/System Description

Circuit/System Description

For an overview of the component/system, refer to Head-Up Display Description and Operation 

Circuit Description
Signal-Head-Up Display Switch The assembly has 3 switches and a resistor ladder that produces different resistances depending on which switch is closed or open.
Signal-Terminal X2-BK @ P16 Instrument Cluster Instrument Cluster LVDS (Low Voltage Differential Signaling) Signal [+]
Low Reference Grounded through the control module.
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