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Home >> Pontiac >> 1987 >> 6000 V6-173 2.8L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Function Selector Positions >> MPH/VSS
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MPH/VSS

A "Scan" tool reading should closely match with speedometer reading with drive wheels turning. A failure in the Vehicle speed Sensor (VSS) circuit should set a Code 24.
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