Download CAUTION When performing service around Supplemental Inflatable Restraint (SIR) system components or wiring, the SIR system must be disabled. Failure to do so could result in possible air bag deployment, personal injury, or unneeded SIR system repairs. Catera 1. Disconnect the negative battery cable. 2. Remove the steering wheel. 3. Remove the inflatable restraint steering wheel module coil. 4. Insert a small pointed awl or wire into the ignition lock cylinder release pinhole. 5. Pull out the ignition lock cylinder. Fig. Insert a pointed tool into the release pin hole To install: 6. Install the lock cylinder. 1. Look into the hole that receives the lock cylinder on the lower RH side in order to locate the locking lever. 2. Carefully push down on the locking lever using a small flat-bladed tool until an audible click is heard. 3. Place the lock cylinder into the empty hole. 7. Install the inflatable restraint steering wheel module coil. Install the steering wheel. Deville, Fleetwood, Eldorado and Seville 1. Disable the SIR system as follows: 1. Disconnect the negative battery cable. 2. Turn the ignition switch OFF . 3. Remove the SIR fuse.