Hi Omair, this is the GM Home Office Letter that was sent to dealers, I was mentioning on Friday. You don't need to call GM with this letter. It cost me over $800 to get the DCT filter changed at my selling dealer on my 2020 C8. This will save you that kind of money doing the same thing. The filter alone was priced at $244.07 back in May 2021 with gasket and bolts. Book rate is 3.5 hours labour as well. In many cases the people on this forum know more than the dealers do. Just let us know if you need anything else! ScottBristol is lovely. Went there for a course once! I’m only on my second vette. Looking forward to getting it delivered to Calgary. Also looking forward to meeting proud corvette owners across Canada especially when the weather improves!