Additional Notes on Intermittents

If the customer complains of harsh ride but no RSS codes are set, check for erratic A/C-heater system operation. If operation is erratic, check RSS Data SD20 and IPC inputs for road speed. If both are equal to zero when car is driven, there is a problem with the PCM.

Fig 1: Code S043 - Speed Signal Fault (1 of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Code S043 - Speed Signal Fault (1 of 2)

Courtesy of GENERAL MOTORS CORP.