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Cadillac
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2000
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Eldorado V8-4.6L VIN Y
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Repair and Diagnosis
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Instrument Panel, Gauges and Warning Indicators
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Description and Operation
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Instrument Cluster
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Tachometer
Tachometer
The engine RPM is obtained via CKT 121 (WHT) from the PCM. The
IPC
compares the engine RPM data with a calibration table in order to determine the needle position.