GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 531581  Size: SH
  1. Disconnect the negative battery cable.
  2. Remove the 6 screws (1,2,3,4,5,6) from the center console.
  3. Remove the center console from the vehicle.
  4. Shift the selector lever to the (N) position.

  5. Object Number: 637190  Size: SH
  6. Remove the shift lock solenoid assembly screws (1).

  7. Object Number: 637195  Size: SH
  8. Remove the shifter indicator plate (3). Moving towards the selector knob, disconnect the indicator lamp.
  9. Disconnect the shift selector electrical connector.
  10. Disconnect the shift select cable and the park lock cable from the selector.
  11. Remove the bolt that retains the park lock cable from the shift selector. Move the cable aside.
  12. Remove the shift lock assembly from the housing (4).

Installation Procedure


    Object Number: 637189  Size: SH
  1. Loosen the location spring screw (1).
  2. With the selector lever in the (N) position, install the solenoid assembly to the housing (3).
  3. Important: A new shift lock solenoid assembly is supplied with a held key release cam at the key interlock cable connecting position with a lock pin. Do not remove the lock pin at this time of installation.


    Object Number: 637188  Size: SH
  4. Align the location spring end with the guide grove (1) and tighten the spring screw (4).
  5. Apply lithium grease GM P/N to the guide grooves (1) and the detent pin.
  6. Make sure lock pin tool is installed completely.
  7. Connect the interlock cable to the cam. Refer to Interlock Cable Replacement in this Section.
  8. Remove the lock pin (2).
  9. Confirm that the key release cam and the interlock cable work properly.
  10. Connect the shift lock solenoid and illumination lamp connectors.

  11. Object Number: 531581  Size: SH
  12. Install the select indicator.
  13. Install the center console.
  14. Install the 6 screws (1,2,3,4,5,6) to the console.
  15. Install the negative battery cable.