GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 926831  Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Disconnect and remove the intermediate exhaust pipe and muffler assembly from the front pipe. Refer to Muffler Replacement .
  3. Remove the rear wheel drive shafts. Refer to Rear Wheel Drive Shaft Replacement .

  4. Object Number: 928922  Size: SH
  5. Reference mark the propeller shaft flange-to-rear drive module (RDM) input flange.
  6. Place a support stand under the rear of the propeller shaft.
  7. Remove the propeller shaft flange mounting bolts.

  8. Object Number: 928930  Size: SH
  9. Reference mark the power take-off unit (PTU) flange-to-propeller shaft constant velocity (CV) joint.
  10. Place a support stand under the front of the propeller shaft.
  11. Remove the propeller shaft CV joint mounting bolts.

  12. Object Number: 928924  Size: SH
  13. While supporting the propeller shaft, remove the support bearing mounting bolts from the vehicle underbody.
  14. Remove the propeller shaft from the vehicle.

  15. Object Number: 929547  Size: SH
  16. Place a support stand under the RDM and secure the RDM.
  17. Remove the RDM support bracket. Refer to Differential Carrier Assembly Mount Replacement .
  18. Remove the left and right RDM support mounting nuts and discard the nut.
  19. Remove the left and right RDM mounting bolts.
  20. Carefully remove the RDM from the vehicle.

Installation Procedure


    Object Number: 929547  Size: SH
  1. With the RDM secured to a support stand, position the RDM to the vehicle.
  2. Install the left and right RDM mounting bolts to the mounts.
  3. Hand install NEW bolts to the left and right mounting bolts.
  4. Install the RDM rear mounting bracket. Refer to Differential Carrier Assembly Mount Replacement .
  5. Notice: Refer to Fastener Notice in the Preface section.

  6. Tighten the left and right RDM mounting nuts.
  7. Tighten
    Tighten the nuts to 125 N·m (92 lb ft).


    Object Number: 928924  Size: SH
  8. Position the propeller shaft to the vehicle and support the propeller shaft at the front and rear.
  9. Install the support bearing to the vehicle.
  10. Hand install the support bearing bolts.

  11. Object Number: 928930  Size: SH
  12. Align the reference marks on the propeller shaft CV joint and the PTU output flange.

  13. Object Number: 928922  Size: SH
  14. Align the reference marks on the propeller shaft flange and the RDM input flange.
  15. Install the propeller shaft. Refer to Propeller Shaft Replacement .

  16. Object Number: 926831  Size: SH
  17. Install the rear wheel drive shafts. Refer to Rear Wheel Drive Shaft Replacement .
  18. Install the muffler and intermediate pipe assembly. Refer to Muffler Replacement .
  19. Lower the vehicle.