FYI - Rock Auto sent an email to me today announcing 'clearance' on some parts for my 03 Envoy (and probably other years as well, since I also have an 08 'registered' w/ them for late model parts lookup, and was notified on that as well.) Not sure if any 4.2L parts are on clearance. I did purchase a few odds & ends that I would use or likely need that had just a couple left. Looks like you need to link from the email to get to the page. Check your email if interested. Perhaps someone from RA will chime in on additional MY / models.