For 1990-2009 cars only
- Apply a 2 mm (1/16 in) bead of RTV sealant GM P/N 12345739 to the oil pan rear seal at the inside corners where the seal meets the rear main bearing cap on the block.
- Install the oil pan rear seal to the rear main bearing cap before the sealer starts to dry.
- Apply a 5 mm (3/16 in) bead of RTV sealant GM P/N 12345739 to the oil pan sealing surface, inboard of the bolt holes. Install the pan before the sealer starts to dry.
- Install the oil pan to the engine.
- Install the oil pan bolts.
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 all except the rear two bolts to 10 N·m (89 lb in). |
| • | Tighten the rear two bolts to 23 N·m (17 lb ft). |
