Well I am in the midst of spring cleaning and I pulled the trans pan to find a filter with no O-ring and then i see a bright shiny tag that says NO-YO-YO reverse fix and some valve body gaskets overhanging that look like they say trans go on them. I am not 100% sure on this. I was just wondering if that reverse fix is something that is usually seen in buick trannys and if anyone can offer some insight into what to look for to find out if any work has been done to the trans...thanks so much!