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Home >> GMC >> 1993 >> Value Van 4.3 Z, Automatic >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls (Diesel) >> Input Devices >> Vehicle Speed Sensor (VSS)
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Vehicle Speed Sensor (VSS)

Mounted on the transmission, VSS sends a pulsing signal to ECM for vehicle speed calculation. This calculation is used to control TCC engagement.

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