General Motors — Rear Crankshaft Oil Seal Installation
Repair & overhaul
From a General Motors service manual — check it applies to your exact model before use.
Procedure
- Lubricate inner and outer diameter of seal with engine oil. Place seal on Seal Installer (J-35621). Position seal installer against crankshaft.
- Thread attaching screws into crankshaft flange and tighten with screwdriver. This squares seal with crankshaft. Rotate seal installer handle until it bottoms.
- Remove seal installer. Install flywheel, clutch (M/T) and transmission.
Tools required
- Seal Installer (J-35621) Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: General Motors service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.