Sierra Classic 2500 4WD V8-8.1L (2007)
1. Remove transfer case. Refer to Transfer Case Assembly Replacement.
2. Using J 36825 and J 23907 remove the output shaft seal.
Installation Procedure
1. Position the J 36502-2A over the output shaft.
2. Using J 36502 install the NEW output shaft seal.
3. Remove the J 36502-2A from the output shaft.