Coolant Heater Replacement for Cadillac Eldorado 1999

Coolant Heater Replacement Front

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
2. Remove the front air deflector. Refer to Front Air Deflector Replacement in Body Front End.
3. Disconnect the electrical connector at the engine block heater.
4. Drain the coolant. Refer to Cooling System Draining and Filling .
5. Remove the coolant heater retaining bolt.
6. Remove the coolant heater.

1. Install the coolant heater.

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.

2. Install the coolant heater retaining bolt.

Tighten
Tighten the coolant heater bolt to 9 N·m (80 lb in).

3. Connect the electrical connector to the coolant heater.
4. Install the front air deflector. Refer to Front Air Deflector Replacement in Body Front End.
5. Lower the vehicle.
6. Refill the engine coolant. Refer to Cooling System Draining and Filling .

Coolant Heater Replacement Rear

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
2. Disconnect the electrical connector at the engine block heater.
3. Drain the engine coolant. Refer to Cooling System Draining and Filling .
4. Remove the coolant heater retaining bolt.
5. Remove the coolant heater.

1. Install the coolant heater.

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.

2. Install the coolant heater retaining bolt.

Tighten
Tighten the coolant heater bolt to 9 N·m (80 lb in).

3. Connect the electrical connector to the coolant heater.
4. Lower the vehicle.
5. Refill the engine coolant. Refer to Cooling System Draining and Filling .