Removal Procedure

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE (SINGLE BATTERY) or BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE (AUXILIARY BATTERY) in Engine Electrical.

CAUTION: Refer to SIR CAUTION in Cautions and Notices.

Disable the SIR system. Refer to DISABLING SYSTEM in SIR.
Remove the hush and knee bolster. Refer to KNEE BOLSTER REPLACEMENT (NON-LUXURY) or KNEE BOLSTER REPLACEMENT (LUXURY) in Instrument Panel.
Remove the steering column trim covers. Refer to Steering Column Trim Covers - Disassemble - Off Vehicle (Column Shift Snap On Shrouds) or Steering Column Trim Covers - Disassemble - Off Vehicle (Floor Shift) .
With the key installed, turn the key to the RUN position.

Fig 1: Releasing/Installing Lock Cylinder Using Allen Wrench

Courtesy of GENERAL MOTORS CORP.

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.

Fig 2: View Of Lock Cylinder At Lock Cylinder Housing

Courtesy of GENERAL MOTORS CORP.

Slide the lock cylinder out of the lock cylinder housing.
Disconnect the passlock and key buzzer from the lock cylinder housing.

Fig 3: Inserting J 42759 Into The Lock Cylinder Housing To Release The Tabs On The Ignition Switch

Courtesy of GENERAL MOTORS CORP.

Insert J 42759 into the lock cylinder housing to release the tabs on the ignition switch.
Pull the ignition switch out of the lock cylinder housing.
Disconnect the connector from the ignition switch.