Oil Pan: Service and Repair

Oil Pan Replacement

Tools Required

EN 46109 Guide Pin Set


Removal Procedure

1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection (LZ4/LY7) Battery Negative Cable Disconnection and Connection (LAT) .
2. Install the engine support fixture. Refer to Engine Support Fixture (Engine Support Fixture) .
3. Remove the right side engine mount. Refer to Engine Mount Replacement - Right Side (Service and Repair) .
4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
5. Drain the engine oil and remove the oil filter. Refer to Engine Oil and Oil Filter Replacement (Service and Repair) .
6. Remove the catalytic converter. Refer to Catalytic Converter Replacement - Left Side (LY7) (Catalytic Converter Replacement - Left Side (LY7))Catalytic Converter Replacement - Left Side (LZ4) (Service and Repair) .
7. Remove the air conditioning (A/C) compressor. Refer to Air Conditioning Compressor Replacement (LAT) Air Conditioning Compressor Replacement (LE5) Air Conditioning Compressor Replacement (LY7) Air Conditioning Compressor Replacement (LZ4) .




8. Remove the oil pan bolts.
9. Remove the oil pan.
10. Clean the oil pan and the engine block gasket surface. Refer to Oil Pan Cleaning and Inspection (Overhaul) .



Installation Procedure





1. Install the 8 mm (0.315 in) guides from the EN 46109 into the center oil pan rail bolt hole on each side of the engine block.




2. Place a 3 mm (0.118 in) bead (1) of RTV sealant, GM P/N 12378521 (Canadian P/N 88901148) or equivalent, on the block pan rail and the crankshaft rear oil seal housing.




3. Position the oil pan onto the block.




4. Remove the EN 46109 8 mm (0.315 in) guides from the engine block.




5. Loosely install the oil pan bolts.





Notice: Refer to Fastener Notice .

6. Tighten the oil pan bolts in sequence shown.

1. Tighten the 8 mm bolts (1-11) to 23 N.m (17 lb ft).
2. Tighten the 6 mm bolts (12, 13) to 10 N.m (89 lb in).


7. Install the air conditioning (A/C) compressor. Refer to Air Conditioning Compressor Replacement (LAT) Air Conditioning Compressor Replacement (LE5) Air Conditioning Compressor Replacement (LY7) Air Conditioning Compressor Replacement (LZ4) .
8. Install the catalytic converter. Refer to Catalytic Converter Replacement - Left Side (LY7) (Catalytic Converter Replacement - Left Side (LY7))Catalytic Converter Replacement - Left Side (LZ4) (Service and Repair) .
9. Lower the vehicle. Refer to Lifting and Jacking the Vehicle .
10. Refill the engine oil. Refer to Engine Oil and Oil Filter Replacement (Service and Repair) .
11. Install the right side engine mount. Refer to Engine Mount Replacement - Right Side (Service and Repair) .
12. Remove the engine support fixture. Refer to Engine Support Fixture (Engine Support Fixture) .
13. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection (LZ4/LY7) Battery Negative Cable Disconnection and Connection (LAT) .