GM Service Manual Online
For 1990-2009 cars only

Heater Outlet Hose Replacement LY7

Special Tools

J 38185 Hose Clamp Pliers

Removal Procedure

  1. Drain the cooling system. Refer to Cooling System Draining and Filling.
  2. Remove the battery tray. Refer to Battery Tray Replacement.
  3. Remove the cowl panel retaining bolts.
  4. Remove the cowl panel.

  5. Object Number: 1207441  Size: SH
  6. Using J 38185 slide the hose clamp away from the base of the heater hose.
  7. Remove the outlet heater hose from the engine cooling thermostat assembly.

  8. Object Number: 1207437  Size: SH
  9. Using J 38185 , slide the hose clamp away from the base of the heater hose.
  10. Remove the heater outlet hose from the heater core.
  11. Remove the heater outlet hose.

Installation Procedure


    Object Number: 1207437  Size: SH
  1. Position the outlet heater hose assembly into the vehicle.
  2. Install the outlet hose to the heater core.
  3. Using J 38185 slide the hose clamp back into the original position on the hose.

  4. Object Number: 1207441  Size: SH
  5. Install the outlet hose to the engine cooling thermostat assembly.
  6. Using J 38185 slide the hose clamp back into the original position on the hose.
  7. Install the cowl panel.
  8. Caution: Refer to Fastener Caution in the Preface section.

  9. Install the cowl panel retaining bolts.
  10. Tighten
    Tighten the bolts to 6 N·m (13 lb ft).

  11. Install the battery tray. Refer to Battery Tray Replacement.
  12. Fill the cooling system. Refer to Cooling System Draining and Filling.