GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

The 5-speed and the 6-speed manual transmission output shaft seals are similar in design. The seal design is different but the removal and the installation procedures are the same. The only difference is the installation tool used in order to install the different seals.

Tools Required

    • J 23907 Slide Hammer
    • J 26941 Extension Housing Seal Remover
  1. Remove the propeller shaft assembly. Refer to Propeller Shaft Replacement in Propeller Shaft.

  2. Object Number: 33333  Size: SH
  3. Remove the output shaft seal using a J 23907 and the J 26941 .

Installation Procedure

Tools Required

    • J 21426 Extension Housing Seal Installer
    • J 39440 Extension Housing Seal Installer

    Object Number: 33336  Size: SH
  1. Install the output shaft seal.
  2. • Use the J 21426 for the 5-speed transmission.
    • Use the J 39440 for the 6-speed transmission.

    Object Number: 33338  Size: SH
  3. Lubricate the inside diameter of the seal. Use only Dexron® III automatic transmission Fluid.
  4. Install the propeller shaft assembly. Refer to Propeller Shaft Replacement in Propeller Shaft.
  5. Inspect the transmission fluid level. Refer to Transmission Fluid Inspection or to Transmission Fluid Inspection .
  6. Notice: Use only DEXRON®-III Automatic Transmission Lubricant for this manual transmission assembly. Other lubricants or additives may damage the blocker ring friction material or the adhesives.

  7. Install transmission fluid if required.