What could be wrong with my transmission? on 1995 Cadillac Seville SLS

My caddy wont shift after 40-45mph and the rpms run high.

1 answer
It may be time for an overhaul. Get it checked out at a transmission shop or a Caddy specialist.
If you want to find a specialist, here's our directory link for you:
https://repairpal.com/directory?address=80017&car_brand_names=Cadillac