Oil Pan: Service and Repair

Removal
1. Remove engine cover and open the hood.
2. Remove air cleaner. Disconnect the air inlet tubes from the throttle body.
3. Remove the retainer bolts for the idle air bypass valve and position the valve out of the way. Cover the manifold opening with a clean shop rag.
4. Unbolt the fan shroud and let it rest on the fan.
5. Remove the oil filler bracket and position it out of the way.
6. Drain the cooling system and remove the upper radiator hose from the radiator.
7. If equipped, remove the auxiliary heater hoses from the cowl.
8. Raise the vehicle on a hoist and position suitable safety stands under the vehicle.
9. Drain the engine oil and remove the oil filter.
10. Disconnect the lower radiator hose from the engine.
11. Remove the retainer nuts for the wiring harness for the starter and the Heated Oxygen Sensor(HO2S).
12. Remove the front engine support retainer nuts and jack the engine up approximately 2-1/2 inches. Block the support with a 3-inch block of wood.
13. Remove the oil pan retainer bolts and remove the oil pan.

Installation
1. Clean the gasket surfaces of the oil pan and engine mating surface. Clean the seal grooves.
2. Apply a pressure-sensitive silicone-based adhesive, (such as G.E., DOW, Loctite or equivalent) to the block rails and front cover.

Fig. 34 Oil pan rear seal installation:

3. Apply a bead of RTV Silicone Rubber or equivalent to the parting line between front cover and block (two places) and to tapered ends of the rear seal portion of the gasket (two places). Immediately install the gasket to the block to facilitate pan installation.





4. Position the oil pan against the engine block and install the reinforcement plates and retainer bolts. Tighten the bolts in the sequence to 16-24 N-m (12-18 ft-lb).
5. Remove the block of wood and lower the engine back down into place. Install the retainer nuts and tighten to specifications.
6. Position the wiring harness and install the retainer nuts.
7. Connect the lower radiator hose to the engine.
8. Install a new oil filter.
9. Remove the safety stands and lower the vehicle.
10. Install the auxiliary heater hoses, if equipped.
11. Position the fan shroud in place and install the retainer bolts. Connect the upper radiator hose to the radiator.
12. Install the idle air bypass valve and retainer bolts.
13. Fill the radiator with coolant. Fill the engine with the specified engine oil.
14. Start the engine and check for leaks.
15. Install the air cleaner assembly and hoses. Close the hood and install the engine cover.