Roadmaster 1992

Ignition Switch


Removal & Installation

  1. Before servicing the vehicle, refer to the Precautions Section.
    Disconnecting the negative battery cable on some vehicles may interfere with the functions of the on-board computer systems and may require the computer to undergo a relearning process, once the negative battery cable is reconnected.

    If working near and/or around the SRS system and components, be sure to properly disable the SRS system. See disarming/arming the SRS system.

    For vehicles equipped with OnStar (RPO UE1), with battery backup, the backup battery is a redundant power supply to allow limited ONStar functionality in the event of a main battery power disruption to the OnStar module (VCIM). Do not disconnect the main vehicle battery or remove the OnStar fuse with the ignition key in any position other than OFF. Retained accessory power should be allowed to time out or be disabled by opening the driver-s side door before disconnecting power. Disconnecting power to the module in any way while the ignition is ON or with the retained accessory power activated may cause activation of the OnStar backup battery system and will discharge and permanently damage the backup battery. Once the backup battery is activated it will stay on until it has completely discharged. The backup battery is not rechargeable and once it is activated, it must be replaced.

  3. Disconnect the negative battery cable.
  5. Be sure that the ignition key is in the LOCK position. Remove the key.
  7. Remove the instrument panel driver-s side knee bolster.
  9. Disconnect the shift indicator cable.
  11. Remove the nuts from the steering column bracket.
  13. Lower the steering column.

    Click image to see an enlarged view

    Fig. Steering column and related components

  15. Disconnect the switch electrical connectors.
  17. Remove/disconnect the brake transmission shift interlock solenoid and bracket.
  19. Remove the switch retaining bolts/screws.
  21. Remove the switch from its mounting.
  23. Disconnect the actuator rod.

    Click image to see an enlarged view

    Fig. Ignition switch and related components


To install:

Be sure to use new fasteners, as required.

Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread sealer are identified. Do not use paints, lubricants or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners.

  1. Installation is the reverse of the removal procedure.
  3. Adjust the switch, if necessary. See illustrations.

    Click image to see an enlarged view

    Fig. Ignition switch adjustment (1 of 2)

    Click image to see an enlarged view

    Fig. Ignition switch adjustment (2 of 2)

  5. Using the GM diagnostic scan tool or aftermarket equivalent reprogram the necessary systems and components. Be sure to follow the scan tool manufacturer-s directions.