GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 339454  Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Drain the coolant. Refer to Cooling System Draining and Filling .
  3. Pull the drain cock out of the radiator body.
  4. Clean or replace the seal and the stem as necessary.

Installation Procedure


    Object Number: 339454  Size: SH
  1. Return the drain cock to the radiator body.
  2. Use a ¼ inch square drive or a 3/16 inch hex drive in order to close the radiator drain valve.
  3. Refill the cooling system. Refer to Cooling System Draining and Filling .
  4. Lower the vehicle.