chevrolet Workshop Repair Guides

Chevrolet Workshop Service and Repair Manuals

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Citation II V6-173 2.8L VIN Z 2-bbl HP (1984)

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Vehicle Speed Sensor: Description and Operation

The Vehicle Speed Sensor (VSS)--positioned behind the speedometer in the instrument cluster--informs the ECM of vehicle speed. 

The ECM processes this information to determine when to activate or deactivate the torque converter clutch.

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