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Home >> GMC >> 1987 >> Forward Control 6.2 J, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - TBI >> Operation >> Data Sensors >> Vehicle Speed Sensor (VSS)
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Vehicle Speed Sensor (VSS)

This sensor is mounted behind the speedometer in instrument cluster. It provides the ECM with pulses to determine vehicle speed. This information is used by the ECM to control Torque Converter Clutch (TCC), shift indicator light, and cruise control system.

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