GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Place a reference mark on the pinion flange yoke and the differential pinion flange.
  3. Remove the 4 bolts and the 4 nuts and washers.

  4. Object Number: 814956  Size: SH
  5. Remove the mid shaft bearing support bolts (1,2).
  6. Remove the sliding yoke (2) and the two piece propeller shaft assembly from the transmission.
  7. Inspect the shaft for dents or other damage. Replace the shaft if the shaft is damaged.
  8. Inspect the universal joints for smooth pivoting. If the universal joints bind or appear tight replace the universal joints as assembled.

  9. Object Number: 175061  Size: SH
  10. Inspect the sliding yoke splines (1) for excessive wear or damage. If the splines (1) appear worn or rounded, replace the sliding yoke (3).
  11. Inspect the sliding yoke for the following:
  12. • Scoring
    • Burrs
    • Other damage
    • If the sliding yoke surface appears scored or rough, replace the sliding yoke.
  13. Inspect the pinion flange yoke for the following:
  14. • Cracks
    • Distortion
    • Other damage
    • If the pinion flange yoke appears damaged or distorted, replace the pinion flange yoke.

Installation Procedure


    Object Number: 635267  Size: SH
  1. Install the sliding yoke (1) into the transmission with the two piece propeller shaft assembly.
  2. Ensure that the sliding yoke splines are lubricated.

  3. Object Number: 814956  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the mid shaft bearing support bolts (1,2).
  5. Tighten
    Tighten the bolts to 37 N·m (27 lb ft).

  6. Install the pinion flange yoke to the differential pinion flange with the reference marks. Secure the pinion flange yoke with 4 bolts and 4  nuts and washers.
  7. Tighten
    Tighten the propeller shaft bolts and nuts to 74 N·m (54 lb ft).

  8. Lower the vehicle.