Code 65, Cruise Servo Position 3.8L

PCM supplies 5 volts to cruise control servo position sensor. Depending upon actual servo position, voltage on servo position sensor circuit will indicate to PCM position of servo. Code 65 will set if circuit No. 399 is open or if circuit No. 398 is open or shorted to ground or voltage. Code 65 does not turn on SERVICE ENGINE SOON light.

Fig 1: Code 65, Schematic, Cruise Servo Position (3.8L)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Code 65, Flow Chart, Cruise Servo Position (3.8L)

Courtesy of GENERAL MOTORS CORP.