GM Service Manual Online
For 1990-2009 cars only

Water Outlet Replacement LY7, LLT

Removal Procedure

  1. Partially drain the cooling system. Refer to Cooling System Draining and Filling .
  2. For the LLT engine, remove the throttle body. Refer to Throttle Body Assembly Replacement .
  3. Remove the radiator hose from the water outlet. Refer to Radiator Inlet Hose Replacement .

  4. Object Number: 902875  Size: SH
  5. Remove the water outlet housing bolts.
  6. Remove the water outlet.
  7. Remove and discard the water outlet seals.
  8. Clean the water outlet housing sealing surfaces.

Installation Procedure


    Object Number: 902875  Size: SH
  1. Install NEW water outlet housing seals.
  2. Install the water outlet.
  3. Notice: Refer to Fastener Notice in the Preface section.

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

  6. Install the radiator hose to the water outlet. Refer to Radiator Inlet Hose Replacement .
  7. For the LLT engine, install the throttle body. Refer to Throttle Body Assembly Replacement .
  8. Fill the cooling system. Refer to Cooling System Draining and Filling .