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Home >> Chevrolet >> 1999 >> Blazer 4D Utility, 4WD, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel - Analog >> Operation >> Gauges >> Speedometer

Instrument Panel - Analog: Operation: Gauges: Speedometer

Vehicle Speed Sensor (VSS) is as permanent magnet signal generator that produces analog output signal proportional to vehicle speed. This signal is processed by Vehicle Control Module/Powertrain Control Module (VCM/PCM) to produce a digital signal (4000 pulses per mile) that is sent to Instrument Panel Cluster (IPC) on designated circuit.

NOTE: Incorrect VSS calibration may adversely affect operation of ABS, engine control system and cruise control system.
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