GM Service Manual Online
For 1990-2009 cars only

Anchor Bolt


    Object Number: 749515  Size: SH
  1. Remove the third gear band anchor bolt (64).
  2. Inspect the anchor bolt and the bolt hole.
  3. Apply automatic transmission fluid to a new O-ring (65).
  4. 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.

  5. Install the new O-ring and third gear band anchor bolt (64).
  6. Tighten
    Tighten the anchor bolt to 133.3-199.9 N·m (98.31-147.44 lb ft)

Case Inspection


    Object Number: 749832  Size: SH

    Notice: Use J 36850 or equivalent during assembly in order to retain checkballs or to lubricate components. Lubricants other than the recommended assembly lube changes the transmission fluid characteristics and causes undesirable shift conditions or filter clogging.

    Important: After cleaning the transmission case, allow the case to air dry. Do not use cloth or paper towels in order to dry the transmission case or any other transmission components. Lint from the towels can cause component failure.

  1. Thoroughly clean the transmission case and all the case threads with solvent.

  2. Object Number: 767488  Size: SH
  3. Inspect the case exterior and the external bores for cracks, sharp edges, porosity and excessive bushing wear.
  4. Inspect the case interior for damage at the snap ring grooves, case lugs and band anchor pin.
  5. Inspect all the gasket surfaces for surface damage and in order to ensure surface flatness.
  6. Air check the oil passages. For identification of the oil passages, refer to the transmission diagnosis section.
  7. Inspect the bearing race for the front differential assembly.
  8. Inspect the lugs for low/reverse clutch, for wear or excessive notches.
  9. Inspect the low/reverse piston base for wear, nicks or scratches.
  10. Replace the case if any of the above conditions are found.
  11. Inspect the bolt holes and fasteners for thread damage. If necessary, repair or replace any bolt holes or fasteners.