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