CTS Sedan AWD V6-3.0L (2010)
10. Using a flat-bladed tool, remove the drive pinion seal (1). Take care not to damage any sealing surfaces.
Installation Procedure
1. Lubricate the drive pinion flange sealing surface of the drive pinion seal with synthetic gear oil GM P/N 12378514 (Canadian P/N 88901045) or
equivalent.
2. Using the DT-48075 (1), install the new drive pinion seal (2) in the pinion housing (3).
3. Remove the DT 48075 from the pinion housing.
4. Install the pinion flange to the drive pinion shaft.
Note: The pinion shaft threads and the pinion flange nut must be free of residue and debris prior to application of threadlocker in order to ensure
proper adhesion and fastener retention.
5. Prepare the pinion shaft threads and the pinion flange nut for assembly:
1. Thoroughly clean the residue from the pinion shaft threads by using denatured alcohol or equivalent and allow to dry.
2. Thoroughly clean the residue from the pinion flange nut by using denatured alcohol or equivalent and allow to dry.
6. Apply threadlocker GM P/N 12345382 (Canadian P/N 10953489) or equivalent to 2/3 of the threaded length of the pinion shaft threads. Ensure
that there are no gaps in the threadlocker along the length of the filled area of the pinion shaft threads.
7. Allow the threadlocker to cure approximately ten minutes before installation.
