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Re: 99 tahoe 5.7 Cant figure out the problem
It was gargling because it was low on coolant and air was passing through the heater core
Fill the cooling system and pressure test it. Then look for leaks.
Intake gaskets are common, radiators are common. It could be plastic fittings leaking if you have rear heat. It could be a lot of things. Its 18 years old. If it is the intake gaskets, replace them with the updated set.
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