C0000 GMC - Vehicle Speed Information Circuit
Tech notesCheck for any other Powertrain Control Module (PCM) codes, if no other codes are present, then there is a problem with either the Power Steering Control Module (PSCM) or the wire from the PCM to the PSCM.
C0000 Gmc DescriptionThe Power Steering Control Module (PSCM) receives a vehicle speed message from the Powertrain Control Module (PCM) via the serial data circuit. The PSCM uses this vehicle speed message, and other inputs, to determine the desired amount of steering assist. At lower speeds, more assist is provided for easy turning during parking maneuvers. At higher speeds, less assist is provided for improved road feel and directional stability.
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