Any time the valve body is removed from a 2003+ 4T65E transmission you will also need to replace the valve body spacer plate with a new one from the dealer. Once you remove the valve body you lose the seal and the parts will leave impressions in the gaskets on the plate which will not properly seal if reused and can result in cross leaks and low pressure, definately not worth the risk reusing this item. The gaskets are glued on to the newer plates. You can grind them off but is not a fun chore to tackle and then you have a bare plate that you can use servicable gaskets with.
