- Apply a 5 mm (0.197 in) wide and 25 mm (1.0 in) long bead of adhesive GM P/N 12346141 (Canadian P/N 10953433) or equivalent, to both the right and left sides of the engine front cover to engine block junction at the oil pan sealing surfaces.
- Apply a 5 mm (0.197 in) wide and 25 mm (1.0 in) long bead of adhesive GM P/N 12346141 (Canadian P/N 10953433) or equivalent, to both the right and left sides of the crankshaft rear oil seal housing to engine block junction at the oil pan sealing surfaces.
- Install the NEW oil pan gasket into the groove in the oil pan.
- Install the oil pan onto the engine block.
- Slide the oil pan back against a suitable straight edge.
- Install the oil pan bolts and nuts, but do not tighten.
- Measure the pan-to-transmission housing clearance using a feeler gage and a straight edge.
- Tighten the oil pan bolts and nuts in sequence (1-12).
- Measure the clearance between the 3 oil pan-to-transmission housing measurement points in order to ensure proper alignment.
- Install a NEW oil pan drain plug seal, O-ring, onto the oil pan drain plug.
- Install the oil pan drain plug into the oil pan.
- Install the NEW engine oil level sensor, if applicable.
Important: Always install a NEW oil pan gasket.
The oil pan gasket and oil pan must be installed and the fasteners tightened while the adhesive is still wet to the touch.
Important: The oil pan alignment must always be flush or forward no more than 0.3 mm (0.011 in) from the rear face of the engine block.
Press the oil pan gasket into the grooves of the engine front cover and crankshaft rear oil seal housing.
Use a feeler gage to check the clearance between the oil pan-to-transmission housing measurement points. If the clearance exceeds 0.3 mm (0.011 in) at any of the 3 oil pan-to-transmission housing measurement points (1), then repeat the step until the oil pan-to-transmission housing clearance is within the specification. The oil pan must always be forward of the rear face of the engine block.
Notice: The alignment of the mating components is crucial. An offset greater than 0.30 mm (0.011 in) between the rear faces of the oil pan and block is not acceptable. Offsets greater than 0.30 mm (0.011 in) will affect the alignment between the engine assembly and the transmission. Mis-alignment of the engine assembly to the transmission can lead to internal and external damage to the engine assembly and/or transmission.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten
Tighten the oil pan bolts to 25 N·m (18 lb ft).
Tighten
Tighten the oil pan drain plug to 25 N·m (18 lb ft).
Tighten
Tighten the engine oil level sensor to 13 N·m (115 lb in).
