where do the two heater hoses connect from firewall to the engine where does the intake connect to engine and where thr out take hose connect my granddaughter had a problem out and about someone stopped to assist her because she was losing anti freeze .

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ke my granddaughter was out and about car over heated someone stopped to help her and they took the heater hoses loose i can,t see where the hoses connect to the engine where does the intake connect to engine and where does the outtake hose connect to engine cane see where it,s a 1996 chevy monte carlo can anyone help me which hose coming from firewall is the in and which is the out