Park/Neutral Position (PNP) Switch

The park/neutral position (PNP) switch transmits the information which range includes the shift lever of the automatic transmission (A/T) to the starter and transmission control module (TCM).

• It is possible for the PNP switch to start an engine in only park (P) and neutral (N) prevention of reckless driving
• The PNP switch makes the backup lamp turn ON when reversing.
• It is used for PNP switch to shift control.

The PNP switch transmits the information by combination of starter and reverse circuit to the vehicle side directly without TCM.

Fig 1: PNP Switch Chart

Courtesy of GENERAL MOTORS CORP.

Fig 2: PNP Switch, Nut, Washer & Control Lever

Courtesy of GENERAL MOTORS CORP.