GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the propeller shaft. Refer to Three-Piece Propeller Shaft Replacement .

  3. Object Number: 258759  Size: SH
  4. Remove the bolt and washer from the center of the yoke.
  5. Important: Cap the end of the transmission in order to minimize fluid loss.

  6. Remove the brake drum and yoke assembly from the transmission.
  7. Remove the bolts holding the drum to the yoke.
  8. Inspect the splines for wear, burrs, or twisting.
  9. Inspect the yoke ears for damage.

Installation Procedure


    Object Number: 258759  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.

  1. Install the bolts holding the drum to the yoke.
  2. Tighten
    Tighten the bolts to 40 N·m (30 lb ft).

  3. Install the drum and yoke assembly to the transmission.
  4. Install the new washer and bolt to the transmission main shaft at the center of the yoke.
  5. Tighten
    Tighten the bolt to 150 N·m (112 lb ft).

  6. Install the propeller shaft. Refer to Three-Piece Propeller Shaft Replacement .
  7. Remove the safety stands and lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  8. Inspect the transmission fluid level. Refer to Transmission Fluid Check in Transmission.