GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Disconnect the radiator inlet hose from the water outlet housing. Refer to Radiator Outlet Hose Replacement .
  2. Remove the power steering pump bracket. Refer to Power Steering Pump Bracket Replacement .

  3. Object Number: 637653  Size: SH
  4. Remove the water outlet housing bolts.
  5. Remove the water outlet housing and seal. Discard the old seal.

Installation Procedure

  1. Remove any burrs or foreign material from the sealing surface of the engine cylinder head and the water outlet housing.

  2. Object Number: 637653  Size: SH
  3. Install a NEW seal and the water outlet housing.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Install the water outlet housing bolts.
  6. Tighten
    Tighten the water outlet bolts to 10 N·m (89 lb in).

  7. Connect the radiator inlet hose to the water outlet housing. Refer to Radiator Outlet Hose Replacement .
  8. Install the power steering pump bracket. Refer to Power Steering Pump Bracket Replacement .