Sierra Classic 2500 4WD V8-6.0L (2007)
5. Using a hammer and a punch, remove the transmission housing front oil seal from the input shaft bearing retainer.
6. Remove the old gasket material from the input shaft bearing retainer.
Installation Procedure
Important:
Inspect the input shaft bearing retainer for any nicks or cracks that may result in a leak. Replace as necessary.
1. Position a NEW oil seal in the input shaft bearing retainer.
2. Using a suitable tool, install the oil seal.
3. Apply RTV sealer GM P/N 12345739 (Canadian P/N 10953472), or equivalent to the inside edge of the bearing retainer mating surface.
