2000 Cadillac Escalade Thermostat Housing

You need to install the new gaskets, the coolant crossover housing assembly, and the studs and the bolts. Connect the heater hose, the upper radiator hose, and the bypass hose, and install the generator upper bracket, the compressor, and the crankcase depression regulator valve. Fill the cooling system with coolant, start the engine and run the engine, with the surge tank cap removed, until the upper radiator hose becomes hot. This indicates that the thermostat is open. Then you can attach the surge tank cap to the surge tank, make sure that the cap arrows line up with the overflow tube, and inspect the cooling system for leaks.

You need to drain the coolant from the radiator, remove the compressor, the crankcase depression regulator valve, and the generator upper bracket and disconnect the bypass hose, the upper radiator hose, and the heater hose. Remove the studs and the bolts and the coolant crossover housing assembly from the vehicle and clean the crossover housing sealing surfaces.