Oil Pan: Service and Repair

Removal Procedure

Important: Do not raise the engine block by the crankshaft balancer to perform this service procedure. Damage to the crankshaft balancer or the crankshaft may occur.





1. Disconnect both the battery negative cables from the batteries. Refer to Battery Replacement.
2. Remove the oil level indicator and tube from the engine. Refer to Oil Level Indicator and Tube Replacement.
3. Raise the vehicle and support with safety stands. Refer to Vehicle Lifting.
4. Drain the engine oil.
5. Secure transmission oil cooler line out of the way.

Important: The transmission assembly does not have to be removed from the vehicle, if the vehicle is equipped with four wheel drive.

6. Remove the flywheel from the crankshaft. Refer to Engine Flywheel Replacement.
7. Remove the front differential carrier from the vehicle (four wheel drive vehicles only). Refer to Differential Carrier Assembly Replacement.





Important: Mark the engine oil pan bolt for the transmission oil cooler line retainer to ensure proper position.

8. Remove the transmission oil cooler lines from the retainer.





9. Remove the oil pan from the engine block. Remove the oil pan bolts from the oil pan.
10. Using a block of wood and a hammer, tap the side of the oil pan until seal is broken.





11. Remove the rear seal on the from the oil pan.
12. Clean the old RTV sealant from the oil pan and engine block.
13. Clean all the oil and grease from the sealing surfaces.


Installation Procedure





1. Apply a 2 mm (11/16 inch) bead of RTV sealant GM P/N 12345739 to the oil pan rear seal at the inside corners where the seal meets the rear crankshaft bearing cap on the engine block.
2. Install the oil pan rear seal to the rear crankshaft bearing cap before the sealer starts to dry.





3. Install the oil pan to the engine block.





Important: Make to reinstall the transmission oil cooler line retainer to the proper location.

Notice: Refer to Fastener Notice in Service Precautions.

4. Install the oil pan bolts to the engine block in the following order.
4.1. Tighten the two rear bolts to 17 Nm (23 lb ft).
4.2. Tighten all the other bolts to 10 Nm (89 lb in).





5. Secure the transmission oil cooler line in the retainer.
6. Install the flywheel to the crankshaft. Refer to Engine Flywheel Replacement.
7. Install the front differential carrier in the vehicle (4 wheel drive models only). Refer to Differential Carrier Assembly Replacement.
8. Remove the safety stands and lower the vehicle. Refer to Vehicle Lifting.
9. Install the oil level indictor and tube to the engine block. Refer to Oil Level Indicator and Tube Replacement.
10. Fill the crankcase with engine oil. Refer to Capacities - Approximate Fluid.
11. Connect both the battery negative cables to the batteries. Refer to Battery Replacement.