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Radiator Drain Plug: Service and Repair

Radiator Drain Cock Replacement

Preliminary Procedure Drain the cooling system. Refer to Draining and Filling Cooling System (9C1, 9C3 Static Fill) Draining and Filling Cooling System (LS4 GE 47716 Fill) Draining and Filling Cooling System (LS4 Static Fill) Draining and Filling Cooling System (LZE, LZ4, LZ8, 9C1, 9C3, GE47716 Fill) Draining and Filling Cooling System (LZE, LZ4, LZ8 Static Fill).