Park/Neutral Position Switch Assembly (75)
WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
The park/neutral position switch assembly (75) is a sliding contact switch attached to the manual shift detent lever assembly (710) outside the transmission case. The four inputs to the TCM from the park/neutral position switch assembly indicate which position is selected by the transmission selector lever. This information is used for engine controls as well as determining the transmission shift patterns. The state of each input is available for display on the scan tool. The four input parameters represented are Mode A, Mode B, Mode C and Mode PA (P/N Start).