GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1998 🢒 Seville 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 Ignition and Start Switch Replacement

Removal Procedure
  1. Apply the parking brake.

    2. Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  2. Disconnect negative battery cable. This will maintain the key code. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  3. Remove the radio. Refer to Radio Replacement in Entertainment.
  4. Remove the steering column. Refer to Steering Column Replacement in Steering Wheel and Column Tilt.
  5. Remove the ignition switch cylinder (1). Refer to Ignition Switch Lock Cylinder Replacement .

    6. Object Number: 291655 Size: SH
  6. Remove one fastener from access hole in IP at steering column opening.

    7. Object Number: 291654 Size: SH
  7. Remove two fasteners (2) from the radio opening hole, one is at the top of the opening and the other is near the opening edge and the head of the screw is facing forward. This is a blind fastener, it can not be seen when installed.

    8. Object Number: 291676 Size: SH
  8. Rotate the switch in the IP.
  9. Disconnect electrical connectors from ignition switch.
  10. Remove the ignition switch bulb from side of switch.
  11. Disconnect park lock cable from ignition switch. Refer to Park Lock Cable Replacement in Automatic Transmission.
  12. Remove the ignition switch through the radio opening.
  13. Remove the fasteners (1 through 3) securing the ignition switch bracket to the switch.
  14. Remove the ignition switch bracket from the ignition switch.

Installation Procedure

    Object Number: 291676 Size: SH
  1. Install the ignition switch housing bracket to switch.
  2. Install fasteners (1 through 3).

    3. Object Number: 291654 Size: SH
  3. Install ignition switch into radio opening.
  4. Install the park lock cable. Refer to Park Lock Cable Replacement in Automatic Transmission.
  5. Install all electrical connectors.
  6. Install bulb to side of ignition switch.
  7. Install fasteners (2) from the ignition switch to the IP retainer.

    8. Object Number: 291658 Size: SH
  8. Install ignition switch cylinder to ignition switch housing. Refer to Ignition Switch Lock Cylinder Replacement .
  9. Install steering column. Refer to Steering Column Replacement in Steering Wheel and Column Tilt.
  10. Install the radio. Refer to Radio Replacement in Entertainment.
  11. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  12. Release the parking brake.