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Repair Instructions: Flushing

WARNING: This page is about a different car, the 2016 Chevrolet Malibu Limited. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • When the cooling system becomes contaminated, the cooling system should be flushed thoroughly to remove the contaminants before the engine is seriously damaged.
  • This procedure is effective in removing contaminants caused by the use of improper coolants, coolant at the end of its life or some liquid chemical flushing agents. This procedure is NOT effective for removing debris contamination caused by component failure or the use of 'stop leak' additives. When the system is contaminated by this type of debris, use the system flow diagrams to identify components that may need replacement to restore proper system flow.
  • Do not use chemical flush agents.
  • Store used coolant in the proper manner, such as in a used engine coolant holding tank. Do not pour used coolant down a drain. Ethylene glycol antifreeze is a very toxic chemical. Do not dispose of coolant into the sewer system or ground water. This is illegal and ecologically unsound.
  • Various methods and equipment can be used to flush the cooling system. If special equipment is used, such as a back flusher, follow the manufacturer's instruction. Always remove the thermostat before flushing the cooling system.
  1. Drain the cooling system. Refer to Cooling System Draining and Filling (GE 47716)  and Cooling System Draining and Filling (Static) .
  2. Remove the radiator surge tank. Refer to Radiator Surge Tank Replacement (LCV) .
  3. Clean and flush the coolant recovery reservoir with clean, drinkable water.
  4. Install the radiator surge tank. Refer to Radiator Surge Tank Replacement (LCV) .
  5. Follow the drain and fill procedure using only clean, drinkable water. Refer to Cooling System Draining and Filling (GE 47716)  and Cooling System Draining and Filling (Static) .
  6. Run the engine for 20 minutes.
  7. Stop the engine.
  8. Drain the cooling system. Refer to Cooling System Draining and Filling (GE 47716)  and Cooling System Draining and Filling (Static) .
  9. Repeat the procedure if necessary, until the fluid is nearly colorless.
  10. Fill the cooling system. Refer to Cooling System Draining and Filling (GE 47716)  and Cooling System Draining and Filling (Static) .
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