Hi,
The screeching is likely the result of coolant getting onto the belt. As far as pressure testing, on this vehicle, it will be done at the coolant reservoir. And you are correct, there is no radiator cap.
As far as the radiator is concerned, keep an eye on it. Also, most people don't realize it, but when there is a leak that prevents the system from building pressure, the coolant will have a lower boiling point, so that may be why you heard the noise.
Regardless, pay attention if the cooling fan is turning on when the engine starts going past the center line on the gauge.
Let me know if anything changes or if I can help in any way.
Take care,
Joe
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Thursday, September 21st, 2023 AT 7:15 PM