GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2007 🢒 XLR 🢒 HVAC 🢒 Heating, Ventilation, and Air Conditioning 🢒 Heater Inlet Hose Replacement

Removal Procedure
  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Remove the battery. Refer to Battery Replacement .

    3. Object Number: 1218477 Size: SH
  3. Disengage tension on the heater inlet hose clamp at the heater pipe assembly.
  4. Disconnect the heater inlet hose from the heater pipe assembly.

    5. Object Number: 931717 Size: SH
  5. Disconnect the heater inlet hose from the underhood junction box retainer clip (1).

    6. Object Number: 1218481 Size: SH
  6. Disengage tension on the heater inlet hose clamp at the water pump.
  7. Disconnect the heater inlet hose (1) from the water pump.
  8. Remove the heater inlet hose from the vehicle.

Installation Procedure

    Important: Lubricate the inside diameters of the hose with clean coolant prior to installation.

  1. Install the heater inlet hose on to the vehicle.
  2. Connect the heater inlet hose (1) to the water pump.

    3. Object Number: 1218481 Size: SH
  3. Engage tension on the heater inlet hose clamp at the water pump.

    4. Object Number: 931717 Size: SH
  4. Connect the heater inlet hose to the underhood junction box retainer clip (1).
  5. Connect the heater inlet hose to the heater pipe assembly.

    6. Object Number: 1218477 Size: SH
  6. Engage tension on the heater inlet hose clamp at the heater pipe assembly.
  7. Install the battery. Refer to Battery Replacement .
  8. Fill the cooling system. Refer to Cooling System Draining and Filling .