GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 45400 Strut Spring Compressor

Removal Procedure

    Caution: Refer to Vehicle Lifting Caution in the Preface section.


    Object Number: 891828  Size: SH
  1. Raise the vehicle on the hoist.
  2. Remove the wheel and tire assemblies.
  3. Remove the brake hose and if equipped the ABS harness from the strut assembly.

  4. Object Number: 891540  Size: SH

    Important: Do not remove the fasteners at this time.

  5. Loosen the steering knuckle to strut fasteners.
  6. Notice: Refer to Ball Stud Turning Notice in the Preface section.


    Object Number: 891609  Size: SH
  7. Remove the stabilizer bar link to strut assembly attachment nut, and move the link toward the rear of the vehicle.

  8. Object Number: 891831  Size: SH
  9. Remove the strut assembly-to-body attachment nut.
  10. Notice: Before removing strut assembly, place a rag over the CV joint boot to protect it from damage.

  11. Remove the 2 steering knuckle to strut fasteners and discard the nut and bolt.
  12. Remove the strut assembly from the vehicle.

Disassembly Procedure


    Object Number: 864793  Size: SH

    Caution: Strut spring is under a high compressive load. Do not remove the strut shaft to upper support nut without first relieving the upper and lower spring supports of spring pressure, using the proper spring compressing tool.

  1. Mount the J 45400 or equivalent, in the holding fixture.
  2. Place the strut/spring assembly into the spring compressor. Fasten the strut with a strut to knuckle bolt and nut through the lower strut mounting hole.
  3. Compress the spring enough to completely unload the upper strut mount.

  4. Object Number: 864798  Size: SH
  5. Remove the strut shaft nut with a wrench, while holding the strut shaft stationary with a TORX™ socket.

  6. Object Number: 891834  Size: SH
  7. Release the spring compressor and tilt the strut assembly outward.
  8. Remove the upper strut mount assembly. Inspect the rubber for cracks or deterioration. Rotate the upper support bearing by hand and check for smooth operation.
  9. Remove the strut spring from the strut. Inspect the spring for damage.
  10. Remove the hollow bumper. Inspect for cracks or deterioration.
  11. Remove the strut from the compressor. Extend and retract the strut shaft and check for smooth, even resistance.

Assembly Procedure


    Object Number: 864808  Size: SH
  1. Place the strut into the spring compressor. Fasten the strut with a strut-to-knuckle bolt and nut through the lower mounting hole.
  2. Extend the strut shaft to the limit of its travel.

  3. Object Number: 891834  Size: SH
  4. Place the hollow bumper onto the strut assembly.
  5. Install the spring onto the strut.
  6. Important: Make sure the spring is correctly positioned in the spring seat and isolator.

  7. Install the upper spring seat and strut mount.

  8. Object Number: 877474  Size: SH
  9. Compress the spring while guiding the strut shaft through the upper strut mount assembly until the upper washer and shaft nut can be installed onto the shaft. Do not over-compress the spring.
  10. Tighten the strut shaft nut with a wrench while holding the strut shaft with a TORX™ socket.
  11. Tighten
    Tighten the spring seat nut-to-front strut shaft to 55 N·m (40 lb ft).

  12. Release the spring compressor tool.
  13. Remove the strut from the compressor.

Installation Procedure


    Object Number: 891831  Size: SH

    Important: Use a new nut. The tighten retention of the old nut may not be sufficient.

  1. Attach the strut to vehicle body with the strut stop and strut-to-body attachment nut.
  2. Tighten
    Tighten the front strut-to-body upper nut to 55 N·m (40 lb ft).


    Object Number: 891540  Size: SH

    Important: New nuts and bolts must be used. The tighten retention of old nuts and bolts may not be sufficient.

  3. Attach the strut to steering knuckle with the fasteners.
  4. Tighten

    1. Tighten the front strut-to-knuckle initial pass to 50 N·m (37 lb ft).
    2. Tighten the front strut-to-knuckle final pass to 100 N·m (73 lb ft) + 30-40 degrees.

    Notice: Refer to Ball Stud Turning Notice in the Preface section.


    Object Number: 891609  Size: SH
  5. Install the stabilizer bar link to the strut assembly.
  6. Tighten
    Tighten the stabilizer bar link-to-strut to 65 N·m (48 lb ft).


    Object Number: 891828  Size: SH
  7. Inspect the boots for damage and replace if damaged.
  8. Reattach the brake hose, and ABS wiring to the strut, if the vehicle is equipped.
  9. Notice: Refer to Wheel Installation Caution in the Preface section.

  10. Position the wheel onto the hub.
  11. Install the wheel bolts and tighten in a crisscross pattern.
  12. 7.1. Hand tighten all five wheel bolts.
    7.2. Us a torque wrench to tighten the wheel bolts using a crisscross pattern.

    Tighten
    Tighten the wheel bolts first pass to 63 N·m (46 lb ft).

    7.3. Use a torque wrench to final tighten the wheel bolts using a crisscross pattern.

    Tighten
    Tighten the wheel bolts final pass to 125 N·m (92 lb ft).

  13. Lower the vehicle from the hoist.
  14. Perform the vehicle wheel alignment. Refer to Wheel Alignment Specifications in Wheel Alignment.