GM Corvette 1984-1996 Repair Guide

Park/Neutral Safety Switch

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The park/neutral and back-up lamp switch is one unit mounted to the side of the shifter assembly. The park/neutral portion of the switch allows electrical current to travel to the ignition system when the shift selector is in Park or Neutral only. The vehicle will not start when the selector is in any other gear. The back-up portion operates the rear back-up lamps when the selector is in the reverse gear.

REMOVAL & INSTALLATION



See Figure 1

  1. Disconnect the negative battery cable.
  2.  
  3. For 1984-92 vehicles, remove the shifter knob, then remove the console assembly, as outlined in Body & Trim of this repair guide.
  4.  
  5. For 1993-96 vehicles, remove the console trim plate.
  6.  
  7. Unfasten the switch mounting nuts, then remove the switch.
  8.  
  9. Remove the gage pin.
  10.  



Click image to see an enlarged view

Fig. Fig. 1: Exploded view of the park/neutral position switch

To install:

After switch adjustment, make sure that the car will only start in Park or Neutral. If the engine starts in any other position, the switch must be readjusted.

  1. To install using a new switch, perform the following:
    1. Place the shift control lever in Neutral.
    2.  
    3. Insert the carrier tang on the switch into the slot on the shifter.
    4.  
    5. Install the mounting nuts and tighten to 26 inch lbs. (3 Nm).
    6.  

  2.  

If the holes do not align with the shift control, make sure the shift control lever is in Neutral. Do not rotate the switch as it is pinned in the Neutral position. If the switch has been rotated and the pin broken, the switch can be adjusted using the old switch procedure.

    1. Move the shift control lever out of the Neutral position, in order to shear the plastic pin.
    2.  


  1. If installing an old switch, perform the following:
    1. Place the shift control lever in Neutral.
    2.  
    3. Align the carrier tang on the switch with the tang slot on the shift control.
    4.  
    5. Loosely assembly the mounting nuts to the case.
    6.  
    7. Rotate the switch to align the service adjustment hole with the carrier pin hole.
    8.  
    9. Insert a 0.94 in. (2.34mm) gage pin in the service adjustment hold and rotate the switch until the pin drops in to a depth of 0.59 in. (15mm).
    10.  
    11. Tighten the nuts to 26 inch lbs. (3 Nm).
    12.  

  2.  
  3. Install the gage pin.
  4.  
  5. Install the console and shifter knob or console trim plate as applicable.
  6.  
  7. Connect the negative battery cable, then make sure that the car only starts in Park or Neutral. If the engine starts in any other position, you must readjust the switch.
  8.  

 
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