Coolant Recovery Reservoir Replacement. Buick Roadmaster 1996

For 1990-2009 cars

### Removal Procedure

Notice: When adding coolant, it is important that you use GM Goodwrench DEX-COOL™ coolant. If coolant other than DEX-COOL™ is added to the system, the engine coolant will require change sooner: at 50 000 km (30,000 miles) or 24 months.

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 General Information.
2. Disconnect the electrical connector from the low coolant switch. This is underneath the reservoir.
3. Drain the coolant to a level below the reservoir. Refer to Cooling System Draining and Filling .
4. Disconnect the following coolant recovery reservoir hoses:

• | The throttle body heater to reservoir hose at the reservoir

• | The heater inlet tee to reservoir hose at the tee

5. Remove the nuts.
6. Remove the reservoir.
7. Clean the reservoir with soap and water. Thoroughly rinse the reservoir.

### Installation Procedure

1. Install the reservoir.
2. Install the nuts.

Tighten
Tighten the nuts to 6 N·m (53 lb in).

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.

3. Connect the coolant recovery reservoir hoses.
4. Connect the electrical connector to the low coolant sensor.
5. Connect the negative battery cable.

Tighten
Tighten the negative battery cable bolt to 6 N·m (53 lb in).

6. Refill the coolant. Refer to Cooling System Draining and Filling .