General Motors — Draining the Engine
Maintenance
From a General Motors service manual — check it applies to your exact model before use.
Procedure
- Remove oil pan drain plug; allow the oil pan to drain.
- Remove oil filter.
- Remove block drain plugs; allow the coolant to drain.
- Install oil pan drain plug; tighten to 22 N-m (5.0L/5.7L) or 28 N-m (7.4L).
- Install block drain plugs; tighten to 22 N-m (5.0L/5.7L) or 12 N-m (7.4L).
Specs & values
- Oil pan drain plug: 22 N-m (16 lbs ft) 5.0L/5.7L; 28 N-m (20 lbs ft) 7.4L
- Block drain plugs: 22 N-m (16 lbs ft) 5.0L/5.7L; 12 N-m (112 lbs in) 7.4L
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.