GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 175052  Size: SH
  1. Raise and Support the Vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Place reference marks (3) on the pinion flange yoke (1) and the differential pinion flange (2).

  3. Object Number: 175059  Size: SH
  4. Remove the 4 bolts (1) and the 4 nuts (4) holding the yoke (2). Separate the pinion flange yoke from the differential pinion flange (3).
  5. Remove the sliding yoke from the transmission.
  6. Remove the rear propeller shaft from the vehicle.
  7. Inspect the rear propeller shaft for dents or other damage. Replace the rear propeller shaft if the shaft is damage.
  8. Inspect the universal joints for smooth pivoting. If the universal joints bind or appear tight, replace the universal joints as assemblies. Refer to Universal Joint Replacement in Universal Joints Replacement (Pinion Flange Yoke Joint) or Universal Joints.

  9. Object Number: 175061  Size: SH
  10. Inspect the sliding yoke splines (1) for excessive wear or damage. If the splines appear worn or rounded, replace the Sliding yoke (3). Refer to Universal Joint Replacement in Universal Joints Replacement (sliding Yoke Joint).
  11. Inspect the sliding yoke surfaces for the following:
  12. • Scoring
    • Burrs
    • Other damage
    • If the sliding yoke surface appears scored or rough, replace the sliding yoke. Refer to Universal Joint Replacement in Universal Joints Replacement (Sliding Yoke Joint).
  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. Refer to Universal Joint Replacement in Universal Joints Replacement (Pinion Flange Joint).

Installation Procedure


    Object Number: 175071  Size: SH
  1. Install the sliding yoke (2) into the transmission (3).
  2. 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.


    Object Number: 175073  Size: SH
  3. Install the pinion flange yoke (4) to the differential pinion flange (3) aligning the reference marks (2) on the pinion flange yoke  (4) and the differential pinion flange (3). Secure the pinion flange yoke  (4) with 4 bolts and 4 nuts.
  4. Tighten
    Tighten the propeller shaft bolts and nuts to 50 N·m (37 lb ft).