GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Venture 🢒 HVAC 🢒 Heating, Ventilation and Air Conditioning 🢒 Auxiliary Coolant Pump to Heater Core Inlet Hose Replacement

Removal Procedure
  1. Drain the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.

    2. Object Number: 423706 Size: SH
  2. Remove the wiper module cover.
  3. Remove the air cleaner duct and cover. Refer to Air Filter Element Replacement in Engine Controls -- 3.4L.
  4. Rotate the engine forward. Refer to Rotating the Engine for Service Access in Engine Mechanical.

    5. Object Number: 637507 Size: SH
  5. Disconnect the auxiliary coolant pump to heater core inlet hose (2) from the auxiliary coolant pump.
  6. Disconnect the auxiliary coolant pump to heater core inlet hose (2) from the heater core inlet.

    7. Object Number: 637504 Size: SH
  7. If equipped with RPO C34, Rear HVAC System, disconnect the auxiliary coolant pump to heater core inlet hose from the hose--T.
  8. Remove the auxiliary coolant pump to heater core inlet hose (2).

Installation Procedure

    Object Number: 637507 Size: SH
  1. Install the auxiliary coolant pump to heater core inlet hose (2).
  2. Connect the auxiliary coolant pump to heater core inlet hose to the heater core inlet.

    3. Object Number: 637504 Size: SH
  3. If equipped with RPO C34, Rear HVAC System, connect the auxiliary coolant pump to heater core inlet hose to the hose--T.
  4. Connect the inlet pipe to auxiliary coolant pump hose to the auxiliary coolant pump.
  5. Rotate the engine rearward to the proper position. Refer to Rotating the Engine for Service Access in Engine Mechanical.
  6. Install the air cleaner cover and duct. Refer to Air Filter Element Replacement in Engine Controls -- 3.4L.

    7. Object Number: 423706 Size: SH
  7. Install the wiper module cover.
  8. Refill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.