No. do you really need one. remove air filter housing and look down. And there it is.Remove the two 10mm bolts and replace thermostat and gaskett.
airfilter housing 1998
Usually at engine end of upper radiator hose in housing
near the thermostat housing
located n housing at end of upper radiator hose.
Should be in a removable housing at the engine end of the upper radiator hose
water pump or thermostat housing crack
On a 4.9L follow the upper radiator back to the engine. This should be the thermostat housing. The thermostat should be inside. On a 4.6L the thermostate is in the housing which is near the water pump drivebelts "on the coolant crossover housing". If this is not clean I recommend you buy the Haynes for your DeVille. See page 3-4, illustration 3.14.
On a 2000 Cadillac DeVille, the thermostat is located in the engine compartment, specifically at the engine's coolant outlet. To access it, you typically need to remove the upper radiator hose and the thermostat housing, which is usually bolted to the engine. It's advisable to consult the vehicle's service manual for specific details and diagrams.
Follow the upper rad hose from the rad to the engine and there you will find the thermostat in a housing. When replacing it make sure the spring on the thermostat goes toward the engine.
In a 1999 Cadillac DeVille, the thermostat is typically located in the engine compartment, specifically at the engine's coolant outlet housing. To access it, you generally need to remove the upper radiator hose, as the thermostat is situated beneath it. It's a good idea to consult the vehicle's service manual for detailed instructions and diagrams.
Thermostat housing diagram for a 2000 Pontiac grand am?
There is a top radiator hose that runs parallel to the radiator. About six inches below the top hose is another hose that connects from the lower back right area of the radiator to the housing of the water pump. Where the hose connects to the water pump housing is where you'll find the thermostat on a '98 Deville.