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Home >> Pontiac >> 2000 >> Grand Prix V6-3.1L VIN J >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Engine Control Module >> Description and Operation >> PCM Controlled Warning Lamps >> Change Oil Soon Indicator (Driver Information Display)
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Change Oil Soon Indicator (Driver Information Display)

The PCM determines the amount of oil life from the various sensors and inputs within the engine control system. When the PCM determines that an oil life of 0% is present, the PCM turns ON the change oil soon indicator by supplying ground.
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