For 1990-2009 cars only
- Apply a GM P/N 12345739 sealant (or an equivalent) to where the oil pan gasket tabs seat on the rear main bearing cap groove.
- Install the oil pan gasket.
- Install the oil pan.
- Install the oil pan reinforcements.
- Install the oil pan nuts.
- Install the oil pan bolts and studs.
Tighten
| • | Tighten the nuts to 11 N·m (97 lb in). |
| • | Tighten the two rear oil pan bolts to 27 N·m (20 lb ft). |
| • | Tighten the remaining oil pan bolts and the oil pan studs to 11 N·m (97 lb in). |
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.
