Bonneville V8-4.6L VIN Y (2004)
Ignition Switch Lock Cylinder: Service and Repair
Ignition Switch Lock Cylinder Replacement
Removal Procedure
Caution: Refer to SIR Caution in Service Precautions.
1. Disconnect the negative battery cable.
2. Disable the SIR. Refer to SIR Disabling and Enabling in Restraint Systems.
3. Apply the parking brake.
4. Remove the radio.
5. Insert the ignition key and turn the ignition switch to RUN, continue to step 6.
If the keys are unavailable or the ignition lock cylinder is seized proceed with the following procedure:
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 9/32 inch drill bit.
8. Remove portions of the broken spring from the hole using a small suitable tool.
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 9.
6. Look through the radio opening in the I/P and locate the release button (1) on the side of the switch.
7. Depress and hold the ignition lock cylinder retaining tab (located on the right lower side of the ignition switch), using a flat-bladed screwdriver or
other suitable tool.
8. Pull outward on the ignition cylinder (1) in order to remove the cylinder from the ignition switch.
9. Remove the reader/exciter module from the ignition lock cylinder.
