Yukon 4WD V8-5.3L (2008)
Seals and Gaskets: Service and Repair
4L60-E/4L65-E/4L70-E - Automatic Transmission
Manual Shift Shaft Seal Replacement
Manual Shift Shaft Seal Replacement
Tools Required
*
J 43911 Selector Shaft Seal Remover
*
J 43909 Selector Shaft Seal Installer
Removal Procedure
1. Remove the park/neutral position (PNP) switch. Refer to Park/Neutral Position Switch Replacement (See: Sensors and Switches -
A/T/Transmission Position Switch/Sensor/Service and Repair/4L60-E/4L65-E/4L70-E - Automatic Transmission) .
2. Ensure that the jackscrew for J 43911 is backed off and will not interfere with installation of the removal tool. Slide the seal remover tool over the
selector shaft (2) with the threaded end of the tool towards the seal.
3. Rotate the removal tool so that the threads on the end of the tool engage the steel shell (1) of the seal. Use a wrench to ensure that the removal tool
is firmly attached to the seal shell.
4. Rotate the jackscrew in the clockwise direction to remove the seal from the bore. Discard the seal that was removed.
Installation Procedure
1. Carefully slide a new selector shaft seal (1) over the selector shaft (2) with the wide face of the steel case facing outward. Position the seal so that
