Upper
Oil Pan Replacement - UpperRemoval Procedure
1. Remove the oil level indicator.
2. If equipped with 4-wheel drive (4WD), remove the front differential carrier.
3. If equipped with 2-wheel drive (2WD), disconnect the relay rod from the pitman arm and idler arm.
4. Remove the lower oil pan.
5. Remove the engine flywheel.
6. Remove the battery cable bracket bolts.
7. Remove the battery cable bracket nut.
8. Remove the flywheel housing to upper oil pan bolts, denoted by the black triangles.
9. Remove the upper oil pan bolts and any brackets. Mark the bolt location of the bracket.
10. Separate the upper oil pan from the engine block.
11. Remove the upper oil pan. The oil level indicator tube needs to be removed while lowering the upper oil pan.
12. If required, clean and inspect the upper oil pan.
Installation Procedure
1. Apply a 2 mm (1/8 inch) wide bead of sealant GM P/N 97720043 (Canadian P/N 88901148), or equivalent to the upper oil pan mating surfaces.
2. Apply a 2 mm (1/8 inch) wide bead of sealant GM P/N 97720043 (Canadian P/N 88901148), or equivalent to the flywheel housing sealing surface.
3. Install the upper oil pan to the engine block. Ensure the oil level indicator tube is installed into the upper oil pan.
4. Notice: Refer to Fastener Notice in Service Precautions.
Install any brackets and the upper oil pan bolts in the sequence shown.
^ Tighten the bolts to 20 Nm (15 ft. lbs.).
5. Install the flywheel housing to upper oil pan bolts denoted by the black triangles.
^ Tighten the bolts to 50 Nm (37 ft. lbs.).
6. Install the battery cable bracket bolts.
^ Tighten the bolts to 12 Nm (106 inch lbs.).
7. Install the battery cable bracket nut.
^ Tighten the nut to 8 Nm (71 inch lbs.).
8. Install the engine flywheel.
9. Install the lower oil pan.
10. If equipped with 4WD, install the front differential carrier.
11. If equipped with 2WD, Connect the relay rod to the pitman arm and idler arm.
12. Lower the vehicle.
13. Install the oil level indicator.
14. Fill the engine with oil.