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Home >> GMC >> 2002 >> C3500 HD 6.5 F, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel, Gages, And Console >> Diagnostic Information and Procedures >> DTC P0608 >> Circuit Description

Circuit Description

The PCM creates the vehicle speed signal by pulsing the vehicle speed signal circuit to ground. The PCM monitors the voltage on the vehicle speed signal circuit. If the PCM determines that the voltage is out of the normal operating range, a DTC sets.