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Q:

gurgleing sound from heater core area on 1992 Chevrolet 1500 Pickup

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
sound occurs when rpm increases have replaced heater core,thermostat,radiator,radiator cap
(1) Answer
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check the heater valve or the vacuum hose or air in the cooling system