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Bob, Auto Tech
Category: Chevy
Satisfied Customers: 4087
Experience:  Plus 40 years GM, over 30 certified with Chevrolet, ASE certified Master Tech. (Expired, Retired)
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how do I drain the antifreeze from my 2002 Cavalier

Customer Question

there is a strange drain valve that I do not wish to damage.
Submitted: 10 years ago.
Category: Chevy
Expert:  Bob replied 10 years ago.

Hi, Your drain plug is a push and twist type. It does not come out. I am sending instructions from GM and a second picture with info on the plug. Thanks, Bob


Cooling System Draining and Filling (L61)

Tools Required

J 26568 Coolant and Battery Tester

Draining Procedure

Caution: With a pressurized cooling system, the coolant temperature in the radiator can be considerably higher than the boiling point of the solution at atmospheric pressure. Removal of the surge tank cap, while the cooling system is hot and under high pressure, causes the solution to boil instantaneously with explosive force. This will cause the solution to spew out over the engine, the fenders, and the person removing the cap. Serious bodily injury may result.

  1. Remove the coolant pressure cap.
  2. Raise and support the vehicle.
  3. Place a drain pan under the drain cock.
  4. Open the radiator drain cock.
  5. Drain the cooling system.
  6. If a complete engine block drain is required, remove the engine block drain plug.
  7. Inspect the engine coolant for the following:
    Normal in appearance -- follow the filling procedure.
    If a complete block drain is required, remove the water pump drain plug.

Filling Procedure

    Notice: The procedure below must be followed. Improper coolant level could result in a low or high coolant level condition, causing engine damage.

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  1. Close the radiator drain cock.

    Tighten radiator drain cock to 2 N·m (18 lb in).

  2. Install the water pump drain plug if necessary.

    Tighten the water pump drain plug to 22 N·m (16 lb ft).

  3. Lower the vehicle.
  4. Fill the cooling system.
  5. Slowly add a mixture of 50/50 DEX-COOL and clean, drinkable water.

    Important: It is necessary to maintain the coolant level at the top of the surge tank label to insure all the air has been purged from the cooling system.

  6. Install surge tank cap.
  7. Start the engine.
  8. Run the engine at 2,000-2,500 RPM until engine reaches normal operating temperature.
  9. Allow the engine to idle for 3 minutes.
  10. Shut the engine off.
  11. Allow the engine to cool.
  12. Top off the coolant as necessary.
  13. Inspect the cooling system for leaks.
  14. Rinse away any excess coolant from the engine and the engine compartment.
  15. Inspect the concentration of the engine coolant using J 26568 .

Document ID# XXXXX
2002 Chevrolet Cavalier

Document ID# XXXXX
2002 Chevrolet Cavalier

Radiator Drain Cock Replacement

Removal Procedure

    Object Number: 339454  Size: SH

  1. Drain the cooling system.
  2. Turn the drain cock counterclockwise in order to open the drain cock.
  3. Pull the stem out of the radiator body.
  4. Clean or replace the seal and stem as necessary.

Installation Procedure

    Object Number: 339454  Size: SH

  1. Return the stem to the radiator body.
  2. Turn the drain clockwise in order to close the drain cock.
  3. Fill the cooling system.

Document ID# XXXXX
2002 Chevrolet Cavalier