You need to go to a car parts store, and get a repair manual for your car. They cost about $16.00 Or, go to a Public Library.
Power steering hose
to keep the hose from collapsing
Disconnect the lower hose
Most GM PCV valves fit into a rubber grommet in the rocker cover and are connected to the throttle body by a hose.
Usually at engine end of upper radiator hose in housing
metal hose attached to front of water pump
located n housing at end of upper radiator hose.
The 1996 Deville drain plug is in the bottom of the radiator close to the bottom hose. It is in a very hard place to reach.
Im trying to re hose my hoses and i dont know where the hoses go
waterpump or radiator hose
I couldn't find it on my '96 either at first. The dip stick is located under the large hose connected to the air filter housing. It's probably the same on a '97.
Should be in a removable housing at the engine end of the upper radiator hose