GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 339454  Size: SH
  1. Using a 1/4 inch square drive or a 3/16 inch hex drive in order to turn the drain cock counterclockwise in order to open the drain cock.
  2. Pull the stem out of the radiator body.
  3. 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. Use the ¼ inch square drive or 3/16 inch hex drive in order to turn the drain clockwise in order to close the drain cock.