GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Drain the cooling system. Refer to Cooling System Draining and Filling .

  2. Object Number: 1272787  Size: SH
  3. Unscrew the radiator drain cock from the radiator.
  4. Remove the drain cock from the radiator side tank with a firm tug.
  5. Remove the drain cock seal from the drain cock.

Installation Procedure


    Object Number: 1272787  Size: SH
  1. Install the seal on the drain cock stem.
  2. Install the drain cock. Make sure that the body is fully seated in the side tank of the radiator.
  3. Screw the radiator drain cock in to the radiator.
  4. Fill the cooling system. Refer to Cooling System Draining and Filling .