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Home >> Chevrolet >> 2001 >> Malibu Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Analog Instrument Panels >> Description & Operation >> Engine Coolant Indicators >> Engine Coolant Temperature

Engine Coolant Temperature

Instrument panel cluster illuminates engine coolant temperature indicator when Body Control Module (BCM) determines that coolant temperature is greater than 123°C (253°F). BCM receives a class 2 message from Powertrain Control Module (PCM) indicating coolant temperature. BCM sends a message to instrument panel cluster via Serial Peripheral Interface (SPI) requesting illumination.

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