Suburban 1/2 Ton 2WD V8-5.3L VIN Z Flex Fuel (2006)
Ignition Lock: Service and Repair
Ignition Lock Cylinder Replacement
Ignition Lock Cylinder Replacement
Removal Procedure
1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure.
2. Caution: Refer to SIR Caution in Service Precautions.
Disable the SIR system. Refer to SIR Disabling and Enabling Zone 3 in SIR.
3. Lower the hush and knee bolster.
4. Remove the steering column trim covers.
5. With the key installed, turn the key to the RUN position.
6. Install an allen wrench into the hole on top of the lock cylinder housing. Push down on the allen wrench to release the tab on the lock cylinder
inside the lock cylinder housing.
7. Slide the lock cylinder out of the lock cylinder housing.
Installation Procedure
1. Install the key into the lock cylinder.
2. Important: The gears between the ignition switch and the lock cylinder housing must be in the correct position. Failure to do so will cause a
misalignment of the gears in the ignition switch and the lock cylinder housing, which may result in a NO START or BATTERY DRAIN.
