Oil Pan Cleaning and Inspection (LS3 or L99)
WARNING: This page is about a different variant/trim than selected.
- Remove the oil filter fitting (438) as required.
- Remove the active fuel management oil pressure relief valve (455) and washer (458).
- Inspect the active fuel management oil pressure relief valve for proper operation. Lightly depress the ball (2). The valve spring (1) should seat the ball to the proper closed position.
- Remove the oil level sensor and O-ring.
- Remove the bolts (427) and baffle (428).
- Clean the oil pan in solvent.
- Dry the oil pan with compressed air.
- Inspect the oil pan for the following conditions:
- Damaged gasket surfaces (1)
- Restrictions within the oil passages (2) of the pan
- Damaged oil filter seal surface (3)
- Threaded bolt holes (4) for damage
- Install the baffle (428) and baffle bolts (427).
- Tighten the baffle bolts (427) to 10 N.m (89 lb in).
- Install the oil level sensor O-ring seal.
- Install the oil level sensor and tighten to 20 N.m (15 lb ft).
- Install the active fuel management oil pressure relief valve (455) and washer (458).
- Tighten the active fuel management oil pressure relief valve (455) to 27 N.m (20 lb ft).
- Install the oil filter fitting (438) as required.
- Tighten the oil filter fitting to 55 N.m (40 lb ft).
WARNING:
Refer to Safety Glasses and Compressed Air Warning .
CAUTION:
Refer to Fastener Caution .