Re: HELP...4L60e not shifting correctly...
as a past dealer mechanic of 30 years (ase master mechanic) the fact that you all of a sudden lost all trans functions and i assume no trouble codes i believe the neck of the filter isn't sealing to the valve body and is sucking air. If you drop the pan and drag the filter in and out you should feel the seal drag and it must be in good shape with no tears or marks on it at all. If the trans pan has been hit it's highly likely it's damaged. Good luck, Brian F.
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