Had an '05 Grand Marquis here from a nice old lady from Church. I checked it out last week. Had airbag problem. Check the code found out it was the pretensioner for the passenger side seat belt in the B pillar of the car. Had to order it. I ordered it used for 50 bucks because new they were 300. Place I ordered it from was only about 20 mi away ,took them 10 days to get it here. Anyhow went to put it in the car today and had to pull the seat out in order to get to the B pillar properly. Of course one of the bolts holding the corner of the seat broke off in the floor of the car. PIA. Got it all back together and spent another 25 or 30 minutes drilling the old bolt out and re-tapping. Is what it is.