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Home >> Hummer >> 2003 >> H2 >> Repair and Diagnosis >> External Pages >> Different car >> Section 369 (Instrument Panel, Gages, And Console) >> Repair Instructions >> Ignition Switch Lock Cylinder Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Refer to SIR CAUTION in Cautions and Notices.
  1. Disconnect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE in Engine Electrical.
  2. Disable the SIR. Refer to ZONE 3 in SIR.
  3. Apply the parking brake.
  4. Remove the I/P cluster trim plate bezel. Refer to TRIM PLATE BEZEL REPLACEMENT - INSTRUMENT PANEL (I/P) CLUSTER  .
  5. Remove the radio. Refer to RADIO REPLACEMENT (W/O UM8) or RADIO REPLACEMENT (W UM8) in Entertainment.
  6. Remove the HVAC control module assembly. Refer to HVAC CONTROL MODULE REPLACEMENT in HVAC Systems Automatic.
  7. Insert the ignition key and turn the ignition switch to RUN, continue to step  8. If the keys are unavailable or the ignition lock cylinder is seized proceed with the following:
    1. Remove the fasteners securing the ignition switch to the I/P retainer.
    2. Push and release the retaining tab at the rear of the ignition switch.
    3. Remove the ignition switch through the radio opening in the retainer.
    4. Protect the immediate work area with suitable material such as clean shop towels or a clean fender cover.
    5. Locate the surface for the ignition switch lock cylinder release button (2) on the plastic ignition switch housing and center punch a location (1) on the "rib" approximately 3/8 inch rearward, toward the key entry end of the cylinder release button.
    6. Drill a pilot hole through the plastic housing with a 1/8 inch drill bit.
    7. Drill a 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.
    8. Use a magnet and remove the retainer tab (2).
    9. Grasp the ignition switch lock cylinder and remove it from the switch housing.
    10. Remove any plastic "flash" from the drilling operation, and using compressed air blow out the ignition switch assembly, proceed to step  11.
    8. Fig 1: Marking Ignition Switch Lock Cylinder For Drilling
    G01507333Courtesy of GENERAL MOTORS CORP.
  8. Look through the radio opening in the I/P retainer and locate the release button (1) on the side of the ignition switch.
  9. Depress and hold the ignition lock cylinder retaining tab, located on the right lower side of the ignition switch, using a flat-bladed tool or other suitable tool.
    10. Fig 2: Locating Ignition Switch Through Radio Opening
    G01507334Courtesy of GENERAL MOTORS CORP.
  10. Pull outward on the ignition cylinder (1) in order to remove the cylinder from the ignition switch.
  11. Remove the reader/exciter module from the ignition lock cylinder. Refer to THEFT DETERRENT EXCITER MODULE REPLACEMENT in Theft Deterrent.
    12. Fig 3: Removing Ignition Lock Cylinder From Ignition Switch
    G01507335Courtesy of GENERAL MOTORS CORP.
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