GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1998 🢒 Catera 🢒 General Information 🢒 Cautions and Notices 🢒 Engine Coolant Bridge Replacement

Removal Procedure
  1. Disconnect the negative battery cable. Refer to

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

    in Cautions and Notices.
  2. Remove the intake plenum. Refer to Intake Plenum Replacement in Engine Mechanical.
  3. Remove the intake manifold. Refer to Intake Manifold Replacement in Engine Mechanical.

    4. Object Number: 142010 Size: SH
  4. Disconnect the electrical connectors at the following locations:
    5. • The engine coolant temperature sender (2)
    • The engine coolant temperature sensor (4)
  5. Remove the throttle body and heater inlet hoses from the engine coolant bridge.
  6. Remove the engine coolant temperature sender (2).
  7. Remove the engine coolant temperature sensor (4) and seal (5).
  8. Remove the throttle body inlet hose fitting (3), if necessary.

    9. Object Number: 142013 Size: MH
  9. Remove the bridge bolts and upper seals (2).
  10. Remove the bridge and lower seals (2).

Installation Procedure

    Object Number: 142013 Size: MH
  1. Install the engine coolant bridge:
    2. • Position the bridge.
    • Slide the upper seals (2) onto the bolts.
    • Insert the bolts (1) into the bridge.
    • Slide the lower seals (2) onto the bolts.

    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.

    Tighten
    Tighten the bolts to 30 N·m (22 lb ft).


    Object Number: 142010 Size: SH
  2. Install the throttle body inlet hose fitting until fully seated and not stripped.
  3. Install the engine coolant temperature sensor (4) and seal (5).

    4. Tighten
    Tighten the sensor to 25 N·m (18 lb ft).

  4. Install the engine coolant temperature sender (2).

    5. Tighten
    Tighten the sender to 20 N·m (15 lb ft).

  5. Install the throttle body and heater inlet hoses to the bridge.
  6. Connect the electrical connectors at the following locations:
    7. • The engine coolant temperature sensor (4)
    • The engine coolant temperature sender (2)
  7. Install the intake manifold. Refer to Intake Manifold Replacement in Engine Mechanical.
  8. Install the intake plenum. Refer to Intake Plenum Replacement in Engine Mechanical.
  9. Connect the battery negative cable and reprogram the applicable accessories.