Pcm Code P065 - Cruise Control Servo Position Sensor Failure: Notes
WARNING: This page is about a different car, the 1993 Cadillac Seville and 1993 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.
Cruise servo position sensor is a potentiometer that changes resistance with servo position. PCM Code P065 sets when PCM detects a low voltage, indicating a short to ground in cruise servo position sensor circuit.