Oil Pan: Service and Repair

Oil Pan Replacement

Removal Procedure
1. Disconnect the negative battery cable.





2. Remove the A/C compressor bottom bolts (4) and loosen the top bolts (2, 3).
3. Remove the oil level indicator and tube.
4. Remove the stabilizer shaft.





5. Remove the front differential and secure to the frame. Service and Repair

6. Remove the front drive axle intermediate shaft bearing assembly. Service and Repair

7. Drain the engine oil.





8. Unclip the transmission cooler lines from the engine block.
9. Remove 4 transmission bell housing bolts that are attached to the oil pan.





10. Remove the remaining oil pan bolts.
11. Place 2 oil pan bolts in the jack screws on the oil pan and tighten evenly to release the oil pan from the engine (1).
12. Clean and inspect the oil pan.

Installation Procedure





1. Apply a 3 mm (0.12 inch) bead of sealer GM P/N 12378521 to the block, rather than the oil pan.

Important: The oil pan must be installed within 10 minutes from when sealer was applied.

2. Install the oil pan, maneuvering the oil pan to clear the oil pump and screen assembly.

Important: When you install the oil pan, it could be shifted front or back a little which could cause a transmission alignment problem. The back of the oil pan needs to be flush with the block.

3. Install the oil pan bolts.





4. Inspect the oil pan alignment. Use a straight edge on the back of the block and the oil pan transmission mounting surface.

Tighten
^ Tighten the oil pan side bolts to 25 Nm (18 lb ft).
^ Tighten the oil pan end bolts to 10 Nm (89 lb in).

Notice: Refer to Fastener Notice in Service Precautions.

5. Install the 4 transmission bell housing bolts that attach to the oil pan.

Tighten
Tighten bolts to 47 Nm (35 lb ft).





6. Clip transmission cooler lines to the engine block.
7. Install the front drive axle intermediate shaft bearing assembly.
8. Install the oil drain plug and filter.





9. Install the front differential to the engine.
10. Install the stabilizer shaft.





11. Install the A/C compressor 2 bottom bolts (4).

Tighten
Tighten all 4 bolts (2, 3, 4) to 50 Nm (37 lb ft).

12. Install the oil level indicator and tube.
13. Connect the negative battery cable.
14. Fill the engine with oil.

Important: Inspect the engine for oil leaks in order to ensure all sealing surfaces are sealed.