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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Manual Transmission - NV 3500 - Service) >> Diagnostic Information and Procedures >> DTC P0500 >> Circuit Description

Circuit Description

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The vehicle speed sensor (VSS) assembly provides vehicle speed information to powertrain control module (PCM). VSS assembly is a permanent magnet generator. VSS produces alternating current (AC) as rotor teeth on output shaft of transmission, 2WD, or transfer case, 4WD, pass through magnetic field of sensor. frequency and amplitude of AC waveform increase as vehicle speed increases.

If PCM detects no vehicle speed for a specified length of time, while other sensors indicate that vehicle is moving, DTC P0500 sets. DTC P0500 is a type B DTC.

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