pontiac Workshop Repair Guides

Pontiac Workshop Service and Repair Manuals

Vehicle Speed Sensor|Service and Repair > < Diagnostic Aids|Page 2319
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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.

Vehicle Speed Sensor|Service and Repair > < Diagnostic Aids|Page 2319