Hi. Good post. I have the same problem with a 2000 Alero 2.4L. It just started missing and throwing a PO300 Sunday. Tried plugs to no avail. I want to try the "coil pack housing" option but want to make sure I'm getting the right part.
Is this the part you all are talking about?
<Update 9/8/10: I replaced the below coil cover to no avail. I then picked up a new coil from AutoZone and that fixed my issue. I just did "brute force" part replacing and did not really test the parts. So with 1 new coil, a new coil cover/housing, and a new spark plugs, I'm hoping my 197k Alero (it's an ex-rental car I picked up for 2k a few years ago) will keep on chugging along as a commuter for a while longer! Thanks for this thread.>
Thanks!
Craig