GM Service Manual Online
For 1990-2009 cars only

Coil Spring Replacement All Wheel Drive and GT

Special Tools

J-45400 Strut Spring Compressor

Removal Procedure

  1. Remove the spring and shock absorber assembly. Refer to Shock Absorber Replacement.
  2. Use the J-45400 Compressor , or equivalent, in order to compress the spring.

  3. Object Number: 829785  Size: SH
  4. Use a wrench in order to hold the piston rod. Remove the upper nut.

  5. Object Number: 829773  Size: SH
  6. Remove the shock absorber upper insulator retainer (9).
  7. Remove the shock absorber upper insulator (8).
  8. Remove the shock absorber upper mount (7).
  9. Remove the shock absorber lower insulator (6).
  10. Remove the spring upper insulator (2).
  11. Use the J-45400 Compressor , or equivalent, in order to decompress the spring (3).
  12. Remove the spring.
  13. Remove the jounce bumper (5).
  14. Remove the shock absorber (4).

Installation Procedure

  1. Install the jounce bumper to the shock absorber.

  2. Object Number: 2013359  Size: SH
  3. Install the spring (1) to the shock absorber. Position the lower tip of the spring on the depression in the lower spring seat (2).
  4. Use the J-45400 Compressor , or equivalent, in order to compress the spring.

  5. Object Number: 829773  Size: SH
  6. Install the spring upper insulator (2).
  7. Install the shock absorber lower insulator (6).

  8. Object Number: 856731  Size: SH

    Note: The right rear shock mount is the mirror image of the left rear shock mount.

  9. Install the shock absorber upper mount.
  10. Position the front stud 23.3 degrees (a) from the centerline of the lower bolt hole.

  11. Install the shock absorber upper insulator.

  12. Object Number: 2013361  Size: SH
  13. Install the shock absorber upper insulator retainer (1). Ensure the retainer is in the correct position.
  14. Note: Do not tighten the nut. Verify the position of the shock absorber upper mount is correct before tightening the nut.

  15. Install the upper nut.
  16. Verify the position of the shock absorber upper mount is correct.
  17. Remove the spring and shock absorber assembly from the J-45400 Compressor , or equivalent.
  18. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 829785  Size: SH
  19. Use a wrench in order to hold the piston rod. Tighten the nut to 39 N·m (29 lb ft).
  20. Install the spring and shock absorber assembly. Refer to Shock Absorber Replacement.

Coil Spring Replacement Except All Wheel Drive and GT

Special Tools

J-45400 Strut Spring Compressor

Removal Procedure

  1. Remove the spring and shock absorber assembly. Refer to Shock Absorber Replacement.
  2. Use the J-45400 Compressor , or equivalent, in order to compress the spring.

  3. Object Number: 829766  Size: SH
  4. Use a wrench in order to hold the piston rod. Remove the upper nut.

  5. Object Number: 829759  Size: SH
  6. Remove the shock absorber upper insulator retainer (9).
  7. Remove the shock absorber upper insulator (8).
  8. Remove the shock absorber upper mount (7).
  9. Remove the shock absorber lower insulator (6).
  10. Remove the spring upper insulator (5).
  11. Use the J-45400 Compressor , or equivalent, in order to decompress the spring (3).
  12. Remove the spring.
  13. Remove the jounce bumper (2).
  14. Remove the shock absorber (4).

Installation Procedure

  1. Install the jounce bumper to the shock absorber.

  2. Object Number: 2013359  Size: SH
  3. Install the spring (1) to the shock absorber. Position the lower tip of the spring on the depression in the lower spring seat (2).
  4. Use the J-45400 Compressor , or equivalent, in order to compress the spring.

  5. Object Number: 829759  Size: SH
  6. Install the spring upper insulator (5).
  7. Install the shock absorber lower insulator (6).

  8. Object Number: 829764  Size: SH

    Note: The right rear shock mount is the mirror image of the left rear shock mount.

  9. Install the shock absorber upper mount.
  10. Position the front stud 80.6 degrees (a) from the centerline of the lower bolt hole.

  11. Install the shock absorber upper insulator.

  12. Object Number: 2013361  Size: SH
  13. Install the shock absorber upper insulator retainer (1). Ensure the retainer is in the correct position.
  14. Note: Do not tighten the nut. Verify the position of the shock absorber upper mount is correct before tightening the nut.

  15. Install the upper nut.
  16. Verify the position of the shock absorber upper mount is correct.
  17. Remove the spring and shock absorber assembly from the J-45400 Compressor , or equivalent.
  18. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 829766  Size: SH
  19. Use a wrench in order to hold the piston rod. Tighten the nut to 39 N·m (29 lb ft).
  20. Install the spring and shock absorber assembly. Refer to Shock Absorber Replacement.