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Home >> Cadillac >> 1994 >> DeVille Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 4.9L >> Pcm Code Charts >> Code P024, Vehicle Speed Sensor (VSS) Circuit Problem >> Action
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Code P024, Vehicle Speed Sensor (VSS) Circuit Problem: Action

PCM turns on MIL and disables Torque Converter Clutch (TCC) and cruise control for the entire ignition cycle. PCM disables 3rd and 4th gears.

NOTE: Test number refers to number on diagnostic chart.
  1. VSS provides a 0-35 volt AC signal to PCM depending on vehicle speed. With wheels turning, signal to PCM should be greater than .5 volt AC.