I'd start with a trans
oil and filter change, and go from there. The oil and filter are probably past it from the abuse they've seen in the past.
I would try that but would my factory warranty would cover that? The only problem now is that i have lth x pipe cai springs and tune.. Would that void my factory warranty ? My plan was get it back to stock and take it to the dealer if im still under it .. And i dnt really abuse of the car only reasons y i have it modded just so i can have some fun time to time and i hardly drive it since im always working put of town