For 1990-2009 cars

### Removal Procedure

1. Block the wheels.
2. Drain the air reservoirs. Refer to Draining Reservoirs .
3. Tag or label the air lines for later installation.
4. Remove the air lines from the valve. Refer to Hose and Line Replacement - Nylon and Metal Compression .
5. Remove the following components:

• | The nuts

• | The washers

• | The bolts

6. Remove the park control valve, chassis mounted, from the crossmember.
7. Inspect the air lines for the following conditions:

• | Damage

• | Kinks

• | Wear

8. Replace any damaged, kinked, or worn air lines.

### Installation Procedure

1. Install the park control valve, chassis mounted.

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 following components:

• | The bolts

• | The washers

• | The park control valve (chassis mounted) nuts.

Tighten
Tighten the park control valve, chassis mounted, nuts to 22 N·m (16 lb ft).

3. Install the air lines to the park control valve, chassis mounted. Refer to Hose and Line Replacement - Nylon and Metal Compression .
4. Perform the air leakage test. Refer to Chassis Mounted Park Control Valve Operational Check .
5. Perform the operational test. Refer to Chassis Mounted Park Control Valve Leakage Test .
6. Remove the wheel blocks.