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Home >> Chevrolet >> 2017 >> SS Automatic Trans >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System >> Repair Instructions >> Flushing >> Radiator Flush

Radiator Flush

    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 .
    2. WARNING:

    Refer to Safety Glasses Warning .

  2. Remove the lower radiator outlet hose at the coolant inlet pipe connection.
  3. Remove the upper radiator inlet hose at the coolant outlet housing connection.
    4. NOTE:

    When attaching the lead away hose, make sure not to block the air bleed hose.

  4. Attach a lead away hose to the open end of the upper radiator hose.
  5. Attach a suitable piece of hose or adaptor between the flushing gun and the open end of the lower radiator hose.
  6. Connect and operate the flushing equipment as recommended by the manufacturer.
    7. NOTE:

    Apply air pressure gradually and not in excess of 19 lb in (130 kPa) otherwise radiator damage will result.

  7. Continue flushing until water from the lead away hose runs clean and clear.
  8. Install all disconnected hoses, ensuring that they are correctly position and securely clamped.
  9. Fill the cooling system. Cooling System Draining and Filling .
  10. Pressure test the cooling system. Cooling System Leak Testing .
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