For 1990-2009 cars

### Removal Procedure

1. Remove the wires and the cables.
2. Remove any other lines that are connected to the crossmember.
3. Remove the brackets and the valves.
4. Remove any other components that are mounted on the frame and may interfere with the removal procedure.
5. Support the crossmember.

Remove the bolts that are holding the crossmember to the frame rails.

6. Remove the crossmember.

### Installation Procedure

1. Position and support the crossmember in the frame rails.
2. Apply a medium strength threadlocker, GM P/N 12345382 or Canadian P/N 10953489 to the threads of 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.

3. Connect the crossmember to the frame rails with the bolts, the washers, and the nuts.

Tighten
Tighten the bolts to 100 N·m (74 lb ft).

4. Install the brackets and the valves.
5. Install any other components that were previously removed.
6. Install the wires and the cables.
7. Install any other lines that were previously removed.