Transmission

Hi - Dave here, contributing to RepairPal and providing expert advice since 2010. If the transmission was operating properly prior to the fluid and filter replacement, then something must've happened during the procedure that is causing it to not operate properly. I would suggest retracing your steps, including dropping the pan again to see what is going on inside. Perhaps there is something obvious like a wiring connector that is not where it should be. There may be a missing sealing o-ring, for example, causing pressure loss. Too hard to know without having done the service and seeing it now. Seek guidance at a local repair shop if need be. https://repairpal.com/auto-repair-near-me Click the link to find some shops near you who can help out!