av8n Posted December 30, 2004 Report Share Posted December 30, 2004 I recently overhauled my 4t60e and I removed the transmission cooling line fittings from the case to completely clean everything. I did not realize that one had a check valve ( ?) built into it, one did not. Could someone tell me which port the check valve fitting screws into? One port is vertical the other is horizontal. Thanks, Paul Quote Link to comment Share on other sites More sharing options...
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