Where is the water pump located on a 1997 Cadillac Catera and is it relatively simple to replace it?
It is on the front of the engine. It is not a job for a backyard meahcnic.
The thermostat is located in the front of the motor, underneath the plenum and intake manifold. (Both must be removed to access it. ) Just follow the upper radiator hose on the driver's side. It connects to it. http://www.cadillacforums.com/forums/cadillac-catera-cimarron-forum/ is a great site for repairing your Catera