Have you inspected your transmission oil level/ condition? Beware of inspecting correct dipstick because if memory serves me well. There are 2 dipstick in transmission area (driver side transmission dipstick & passenger side has a differential oil dipstick, under hood) If levels are okay. I would say have vehicle towed to your regular Automotive Service Facitly and have perform a diagnostic analysis to see if any diagnostic trouble fault are stored or present that may be related to your current symptoms. Best of wishes.