Seat Adjuster Front Vertical Actuator and Rear Vertical Actuator Replacement for Chevrolet Alero Export 1999

1. Disconnect the drive cables. Refer to Seat Horizontal and Vertical Drive Cable Replacement .



2. Manually adjust the adjuster in the full up position.
3. Remove the jackscrew nuts (5, 9).
4. Remove the screws from the upper channel (6).
5. Remove the vertical actuator from the upper channel.

1. Install the vertical actuator to the upper channel.

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. Secure the vertical actuator using the screws (6).

Tighten
Tighten the screws to 16 N·m (12 lb ft).

3. Install the jackscrew nuts (5, 9).

Tighten
Tighten the nuts to fully driven, seated, not stripped.

4. Install the drive cables. Refer to Seat Horizontal and Vertical Drive Cable Replacement .
5. Verify that the adjusters are in phase. Refer to Seat Adjuster Phase Adjustment .