GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2004 🢒 Seville 🢒 Engine 🢒 Engine Electrical 🢒 Heater Inlet Pipe Replacement

Removal Procedure
  1. Drain the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
  2. Remove the air filter housing assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls -- 4.6L.
  3. Remove the heater hose from the heater inlet pipe (2). Refer to Heater Hoses Replacement .

    4. Object Number: 605719 Size: SH
  4. Remove the hold down fasteners from the shift cable bracket.
  5. Remove the shift cable bracket in order to release the heater inlet pipe (2) from the stud.
  6. Rotate the heater inlet pipe (2) in order to remove the pipe hold down bracket from the stud.
  7. Release the locking tabs on the coolant crossover side of the heater inlet pipe (2) and pull the heater inlet pipe (2) out of the inlet heater pipe adapter (1).
  8. Remove the heater inlet pipe (2) from the vehicle.

Installation Procedure

    Object Number: 605719 Size: SH
  1. Push the heater inlet pipe (2) firmly into the heater inlet pipe adapter (1) in order to engage the pipe (2) and lock the pipe to the heater inlet pipe adapter (1).

    2. Pull out on the pipe (2) in order to ensure the pipe is properly engaged in the heater inlet pipe adapter (1).

  2. Rotate the heater inlet pipe (2) onto the hold down stud.
  3. Install the shift cable hold down bracket.

    4. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the shift cable hold down bracket fasteners to the studs.

    5. Tighten
    Tighten the fasteners to 25 N·m (18 lb ft).

  5. Install the heater hose to the heater inlet coolant pipe (2). Refer to Heater Hoses Replacement .
  6. Install the air filter housing assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls -- 4.6L.
  7. Fill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.