I was out driving today and my car started running weird. It seems like the c4 automatic tranny isn't wanting to stay in gear. Normally I can feel the car go into when I shift from park to drive or reverse etc. Now there's no change. However, if I give it some gas it will jump into gear, which caused quite a few burn outs. Checked my levels and everything is fine. Linkages are moving appropriately. Any ideas?