GM Service Manual Online
For 1990-2009 cars only

Engine Coolant Outlet Pipe Replacement LP1, LY7

Tools Required

J 38185 Hose Clamp Pliers

Removal Procedure

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

  2. Object Number: 142121  Size: SH
  3. Position the J 38185 to the clamp in order to remove the radiator inlet hose (1) from the coolant outlet pipe.

  4. Object Number: 159185  Size: SH
  5. Remove the bolt (2) securing the following to the cylinder head:
  6. • The oil level indicator tube (4)
    • The coolant outlet pipe (3)
    • The engine front lift bracket (1)
  7. Remove the coolant outlet pipe (3) from the thermostat housing.

  8. Object Number: 142123  Size: SH
  9. Remove the O-ring seals from the coolant outlet pipe.
  10. Discard the O-rings.

Installation Procedure


    Object Number: 142123  Size: SH
  1. Lubricate 2 new O-ring seals with coolant.
  2. Important: Ensure the O-rings are not twisted.

  3. Install the new O-ring seals around the coolant outlet pipe grooves.

  4. Object Number: 159185  Size: SH
  5. Insert the coolant outlet pipe (3) into the thermostat housing.
  6. Notice: Refer to Fastener Notice in the Preface section.

  7. Install the bolt (2) securing the following to the cylinder head:
  8. • The oil level indicator tube (4)
    • The coolant outlet pipe (3)
    • The engine front lift bracket (1)

    Tighten
    Tighten the oil level indicator tube bolt to 20 N·m (15 lb ft).


    Object Number: 142121  Size: SH
  9. Position the J 38185 to the clamp in order to connect the radiator inlet hose (1) to the coolant outlet pipe.
  10. Fill the cooling system. Refer to Cooling System Draining and Filling .