General Motors — Crankshaft Removal
Repair & overhaul
From a General Motors service manual — check it applies to your exact model before use.
Before you start
- Caps must be returned to original locations with the orientation arrow pointing forward.
Procedure
- Check main bearing caps for location markings; mark if necessary.
- Remove bolts.
- Remove main bearing caps.
- Lift the crankshaft straight up.
- Remove rear seal.
- Remove main bearing inserts; mark for reuse if applicable.
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.