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Home >> Buick >> 2009 >> Allure CX >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays & Gauges >> Description and Operation >> Instrument Cluster Description and Operation >> Speedometer

Instrument Cluster Description and Operation: Speedometer

The instrument panel cluster (IPC) displays the vehicle speed based on serial data message from the PCM/ECM. The speedometer defaults to 0 mph (0 km/h) if the IPC detects a loss of serial data communication with the PCM/ECM.

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