There should be some pressure. Check/replace Radiator cap. The cap will tell you what the pressure of the cap is before it opens and vents to the overflow. Be sure Thermostat is not in Backwards. spring side should be towards engine. Engine will over heat if it is in backwards.
where are the sparkplugs on a 2002 cadillac deville and how to change them
By the thermostat
Vrey carefully
In the motor.
The oil pressure sensor is located on the oil filter adapter on the 1994 Cadillac Sedan Deville.
to keep the hose from collapsing
The 1983 Cadillac Deville oil pressure sensor can be found on the side of the engine. The oil pressure sensor will be on the left-hand side of the engine.
The 1997 Cadillac Deville fuel pressure regulator can be found on top of the engine. The fuel pressure regulator will be near the fuel injector pump.
Stuck thermostat, scale build up in the radiator and engine block, radiator cap not holding correct pressure. or it could be your headgaskets
near the thermostat housing
Usually at engine end of upper radiator hose in housing
changing serpentine belt and pulley 90' sedan deville