GM Service Manual Online
For 1990-2009 cars only

Support Replacement GNC

Special Tools

EN-49411 Angle Meter

For equivalent regional tools, refer to Special Tools.

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Remove the rear tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation.
  3. Remove the rear muffler assembly. Refer to Exhaust Muffler Replacement.
  4. Disconnect the stabilizer shaft from stabilizer shaft links. Refer to Stabilizer Shaft Replacement.
  5. Remove the park brake cables from the support. Refer to Parking Brake Rear Cable Replacement.
  6. Remove the rear axle lower control arms from the vehicle. Refer to Rear Axle Lower Control Arm Replacement.
  7. Remove the adjust links from the from the vehicle. Refer to Adjust Link Replacement.
  8. Remove rear axle upper control arm inner fasteners. Refer to Rear Axle Upper Control Arm Replacement.
  9. Position a transmission jack under the rear support and firmly secure the support to the jack with straps.
  10. Mark the position of the support to the body with spray paint.

  11. Object Number: 1835959  Size: SH
  12. Remove the support bolts and discard them.
  13. With the aid of an assistant, lower the support from the transmission jack stand.
  14. Remove the stabilizer shaft from the rear support.

Installation Procedure

    Note: When transferring any suspension components, refer to each suspension component replacement procedure for the proper torque specifications.

  1. Install the stabilizer shaft assembly on to the support. Refer to Stabilizer Shaft Replacement.
  2. With the aid of an assistant, position the rear support onto the transmission jack and firmly secure the support to the jack with straps.
  3. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1835959  Size: SH
  4. Install the NEW support bolts and tighten to 90 N·m (66 lb ft).
  5. Tighten the support bolts an additional 120 degrees + 15 degrees using the EN-49411 angle meter .
  6. Remove the transmission jack stand.
  7. Install the rear axle upper control arm inner fasteners. Refer to Rear Axle Upper Control Arm Replacement.
  8. Install the adjust links to the support. Refer to Adjust Link Replacement.
  9. Install the rear axle lower control arms. Refer to Rear Axle Lower Control Arm Replacement.
  10. Install the park brake cables to the rear support. Refer to Parking Brake Rear Cable Replacement.
  11. Install the rear muffler assembly. Refer to Exhaust Muffler Replacement
  12. Connect the stabilizer shaft links to the stabilizer shaft. Refer to Stabilizer Shaft Replacement.
  13. Install the rear tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation.
  14. Lower the vehicle.
  15. Realign the rear suspension. Refer to Wheel Alignment Measurement.

Support Replacement GNE

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Remove the tires and wheels. Refer to Tire and Wheel Removal and Installation.
  3. Remove the exhaust muffler. Refer to Exhaust Muffler Replacement.
  4. Remove the park brake cables from the support. Refer to Parking Brake Rear Cable Replacement.
  5. Remove shock absorber lower fastener. Refer to Shock Absorber Replacement.
  6. Remove rear wheel speed sensor. Refer to Rear Wheel Speed Sensor Replacement.
  7. Remove the lower control arms from the vehicle. Refer to Rear Axle Lower Control Arm Replacement.
  8. Remove the upper control arms from the vehicle. Refer to Rear Axle Upper Control Arm Replacement.
  9. Remove reinforcement arm bolts (1) to body.

  10. Object Number: 2018675  Size: SH
  11. Remove the outer fastener adjustment links. Refer to Adjust Link Replacement.
  12. Remove the rear wheel drive shafts. Refer to Rear Wheel Drive Shaft Replacement.
  13. Remove the rear axle. Refer to Rear Axle Replacement.
  14. Position a transmission jack under the rear support and firmly secure the support to the jack with straps.
  15. Mark up support position to body with spray paint.
  16. Remove the 4 rear support to body bolts (1).

  17. Object Number: 2018676  Size: SH
  18. Remove the rear support assembly from the vehicle.
  19. Remove the inner fastener from adjustments links. Refer to Adjust Link Replacement.
  20. With the aid of an assistant, remove the rear support from the transmission jack and place it on the floor.

Installation Procedure

    Note: When transferring any suspension components, refer to each suspension component replacement procedure for the proper torque specifications.

  1. With the aid of an assistant, position the rear support onto the transmission jack and firmly secure the support to the jack with straps.
  2. Install the inner fastener to adjustments links. Refer to Adjust Link Replacement.
  3. Position the rear support assembly to the vehicle.
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Install 4 NEW rear support to body bolts (1).
  6. Tighten
    90 N·m (66 lb ft) + 180 degrees + 15 degrees


    Object Number: 2018676  Size: SH
  7. Install the rear axle. Refer to Rear Axle Replacement.
  8. Install the rear wheel drive shafts. Refer to Rear Wheel Drive Shaft Replacement.
  9. Install the outer fastener adjustment links. Refer to Adjust Link Replacement.
  10. Install NEW reinforcements arm bolts (1) to body.
  11. Tighten
    150 N·m (111 lb ft) + 30 degrees + 15 degrees


    Object Number: 2018675  Size: SH
  12. Install upper control arms. Refer to Rear Axle Upper Control Arm Replacement.
  13. Install lower control arms. Refer to Rear Axle Lower Control Arm Replacement.
  14. Install the Rear wheel speed sensor. Refer to Rear Wheel Speed Sensor Replacement.
  15. Install shock absorber lower fastener. Refer to Shock Absorber Replacement.
  16. Install the park brake cable. Refer to Parking Brake Rear Cable Replacement.
  17. Install the exhaust muffler. Refer to Exhaust Muffler Replacement.
  18. Install the tires and wheels. Refer to Tire and Wheel Removal and Installation.
  19. Check the rear alignment. Refer to Wheel Alignment Measurement.