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Pcm Code P063 - Vehicle Speed & Set Speed Difference Too High: Action

PCM disengages cruise control.

Fig 1: PCM Code P063 Schematic - Vehicle Speed & Set Speed Difference Too High
G93B40338Courtesy of GENERAL MOTORS CORP.
Fig 2: PCM Code P063 Flow Chart - Vehicle Speed & Set Speed Difference Too High
G93G40341Courtesy of GENERAL MOTORS CORP.
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