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Home >> Buick >> 2008 >> Allure CXL >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays & Gages >> Description and Operation >> Instrument Cluster Description and Operation >> Tachometer

Instrument Cluster Description and Operation: Tachometer

The instrument panel cluster (IPC) displays the engine speed based on serial data message from the PCM/ECM. The tachometer defaults to 0 rpm if the IPC detects a loss of serial data communication with the PCM/ECM.