B.Upper Strut Mount Noise

Replace both rear upper strut mounts using GMWDD mount kit, P/N 22062510. Each kit contains one replacement mount (identified by a daub of orange paint) and a complete set of mounting hardware. Two mount kits are required.

Removal

1. Raise car on frame contact hoist. Allow rear control arms to hang free.

2. Place a short jack stand (2' - 2-1/2') under rear control arm. Lower hoist so that weight of car loads rear spring.

3. Remove wheel and tire assembly.

4. Disconnect stabilizer bar from knuckle bracket.

5. Disconnect ELC air tube from strut fitting.

6. If car is equipped with the Delco-Bose premium sound system, remove the spare tire and lower speaker enclosures from inside the trunk.

FIGURE 2 - TOP STRUT MOUNT NUTS:

7.. Remove left and right inside trunk trim as required to gain access to
top strut mount nuts and remove nuts. See Figure 2.

FIGURE 3 - STRUT AND KNUCKLE ASSEMBLY:

8. Compress strut by hand. Swing strut and knuckle assembly outward away from edge of wheelhouse by pivoting on lower control arm ball join. See Figure 3. Do not loosen strut-to-knuckle anchor bolts. If these bolts are loosened, a wheel alignment must be performed after reinstallation of strut.

9. Note orientation of upper mount on strut. New mount must be installed in exactly the same position.

FIGURE 4 - UPPER STRUT MOUNT:

10. Remove upper strut mount and washer from strut rod by holding strut rod with a T50 torx tool and turning the prevailing-torque nut with a 24 mm box end wrench. See Figure 4.

FIGURE 5 - TORQUE NUT AND WASHER:

Installation

1. Place new mount strut rod in same position as old mount.

2. Install the new prevailing-torque nut and washer (included in mount kit) on strut rod. See Figure 5.

3. While holding nut with box end wrench, turn strut rod with T50 torx tool. Tighten to 85 N-m (62 ft.lbs.).

4. Move strut and knuckle assembly into position in strut tower.

5. Extend strut upward by hand, positioning upper mount studs in holes in top of strut tower.

6. Install new upper strut mount nuts and washers (included in mount kit). Tighten to 25 N-m (18 ft.lbs.).

7. Install trunk trim.

8. Install ELC air tube.
9. Connect stabilizer bar to knuckle bracket. Tighten to 18 N-m (13 ft. lbs.).

10. Install wheel and tire assembly.

11. Raise car. Remove jack stand.

12. Lower car.

13. Pressurize the air adjustable rear struts by grounding the yellow test lead at the ELC compressor. Allow compressor to run for approximately 15 seconds. This ensures that the strut air sleeves are filled with residual pressure.


The following operations and time allowances should be used when submitting warranty claims for repairs described above.


Failure
Operation Description Hours Code

E5580 Ball Joint, Rear Control Arm .9 40
Right - Replace

E5581 Ball Joint, Rear Control Arm .9 40
Left - Replace

E5747 Mount, Rear Strut, Both - 1.3 40
Replace