air bags AND the control module are a one time use thing. Just made this replacement last week on a 98 Deville. Move drivers seat all the way forward, remove 2 bolts at rear of track, allowing seat to be tilted forward. Module will be located near the front inside of seat. About a 4x4 inch silver box held in with 3 10mm bolts. Change this only after unhooking batt cable, once this is done replace drivers airbag via 4 torx screws and then replace the pass airbag under the cover. Make all connection before re hooking up the battery.