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Home >> Cadillac >> 2002 >> Seville STS >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel, Gauges & Console >> Repair Instructions >> Ignition Switch Lock Cylinder Replacement (LHD) >> Removal Procedure

Removal Procedure

CAUTION: Refer to SIR HANDLING CAUTION .
  1. Disable the SIR. Refer to DISABLING & ACTIVATING AIR BAG SYSTEM .
  2. Apply the parking brake.
  3. Disconnect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PRO .
  4. Remove the radio. Refer to RADIO REPLACEMENT (U1R, UL6, UM5, UM9) or RADIO REPLACEMENT (U3Q, U3R, U3S) .
  5. Insert the ignition key into the ignition cylinder.
    Fig 1: Ignition Switch Lock Cylinder
    G01796219Courtesy of GENERAL MOTORS CORP.

    Important:  A new lock cylinder housing and lock cylinder bezel will be required if the ignition cylinder is seized or the ignition key is lost or broken.

  6. If the keys are broken or unavailable or the ignition lock cylinder is seized, proceed with the following steps:
    1. 6.1. Pry the ignition lock cylinder bezel off of the ignition switch.
    2. 6.2. Remove the knee bolster. Refer to Knee Bolster Replacement 
    3. 6.3. Disconnect the ignition switch electrical connectors.
    4. 6.4. Remove the fasteners securing the ignition switch to the instrument panel (IP) retainer.
    5. 6.5. Remove the ignition switch through the radio opening.
    6. 6.6. Protect the immediate work area with suitable materials such as clean shop towels or a clean fender cover.
    7. 6.7. Locate the ignition switch lock cylinder release button (2) on the plastic ignition switch housing.
    8. 6.8. Center punch on the rib (1) approximately 3/8 inch toward the key entry end of the ignition lock housing.
    9. 6.9. Drill a pilot hole through the plastic housing, where the housing had been center punched in the previous step, with a 1/8 inch drill bit.
    10. 6.10. Drill the larger hole at the pilot location, and slightly into the ignition switch lock cylinder surface to break the release button retaining spring using a 1/4 inch drill bit.
    11. 6.11. Use a magnet and remove the lock cylinder release button (2).
    12. 6.12. Grasp the ignition switch lock cylinder and remove it from the switch housing.
    13. 6.13. Remove any plastic flash from the drilling operation. Using compressed air, blow out the ignition switch assembly and proceed to step  10.
  7. Turn the ignition to the RUN position.
  8. Look through the IP trim cover opening in the IP and locate the ignition lock cylinder release button (3) located on the right lower side of the ignition switch assembly (2).
  9. Using a small flat-bladed tool depress and hold the ignition lock cylinder release button (3).
    Fig 2: Ignition Lock Cylinder Release Button
    G01796220Courtesy of GENERAL MOTORS CORP.
  10. Pull on the ignition cylinder in order to remove the cylinder.
    Fig 3: Ignition Lock Cylinder Bezel
    G01796221Courtesy of GENERAL MOTORS CORP.
  11. Release the ignition cylinder lock cylinder bezel retaining tabs.
  12. Remove the ignition lock cylinder bezel.
    Fig 4: Ignition Cylinder Lock Cylinder Bezel Retaining Tabs
    G01796222Courtesy of GENERAL MOTORS CORP.
  13. Remove the light pipe (2) from the lock cylinder.
  14. Slide the reader/exciter (4) off of the ignition lock cylinder.
    Fig 5: Ignition Lock Cylinder & Light Pipe
    G01796223Courtesy of GENERAL MOTORS CORP.
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