GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 35621-A Crankshaft Rear Oil Seal Installer

    Important: Always use a new crankshaft rear oil seal and new crankshaft rear oil seal housing gasket when you install the crankshaft rear oil seal housing.


    Object Number: 23781  Size: SH
  1. Install the new gasket and the crankshaft rear oil housing on to the studs.

  2. Object Number: 11479  Size: SH
  3. Install the rear oil seal housing nuts and bolts.
  4. Tighten
    Tighten the crankshaft rear oil seal housing nuts and bolts to 15 N·m (11 lb ft).

    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. Coat the new oil seal entirely with clean engine oil.
  6. Install the seal onto the J 35621-A
  7. Install the J 35621-A onto the rear of the crankshaft. Tighten the screws snugly in order to ensure that the seal will be installed squarely over the crankshaft.
  8. Install the crankshaft rear oil seal to the crankshaft and the crankshaft rear oil seal housing. Tighten the wing nut on the J 35621-A until the oil seal bottoms.
  9. Remove the J 35621-A from the crankshaft rear oil seal housing.